Northern Nut Growers Association Report of the Proceedings at the 44th Annual Meeting / Rochester, N.Y. August 31 and September 1, 1953

by Unknown

TUESDAY AFTERNOON SESSION

PRESIDENT BEST: The first item on the program is the life story of the Late Reverend Crath and the Crath Carpathian walnut in Ontario. We are going to have Mr. L. K. Devitt of Toronto, Canada, get into this subject for us. Mr. Devitt did know Reverend Crath since 1934. Mr. Devitt supported his expedition to the Ukraine in 1934. He has a few slides for us and then he is going to talk to us about a number of features.

Mr. Devitt is in the school system in Toronto, and he is a graduate of the University of Toronto, and so without further introduction, take over and give us your story.

MR. DEVITT: Thank you. Mr. Chairman, ladies and gentlemen, when I wrote a letter to the secretary of the Association about Reverend Crath, I thought it was also fitting that at the next meeting I should come here and say a little more about the life and work of the Reverend Crath and the Crath Carpathian walnut in Ontario and the progress for the last 20 years.

Late Rev. Paul C. Crath

L. K. DEVITT, Toronto, Ontario

Rev. Crath was born near Kiev in Greater Ukraine, Poland, in 1883. He was the son of an Agricultural College Professor. It is assumed that he enjoyed the life of the upper class, being a graduate of two universities; and speaking fluently at least six languages of Central and Western Europe, and having travelled almost everywhere in Europe. He possessed a wide knowledge of the peoples, the history and the culture of all the Central European Countries.

He migrated to Canada in 1908 and settled in Western Canada. He was employed at various, clerical occupations before entering the Theological College of the University of Manitoba from where he graduated as a Presbyterian minister in 1922.

He was the minister of a Ukranian Presbyterian Church in Toronto for two years. From 1924 to 1936 he served as a Presbyterian missionary in Poland, organizing some thirty missions in Galicia and Volynia. For some years before the war, he spent considerable time on a farm near Welcome, Ontario, building up a European Nursery and in the winters he served with the Home Missions mostly in Western Canada. During the last ten years of his life he had to curtail his activities more and more, owing to poor health and a heart condition.

I met Rev. Crath when he was on furlough in 1934.

I went to the National Exhibition and among the various exhibits I came across a rather unique exhibit of nuts, grown by the late Geo. H. Corsan, Echo Valley, Islington.

In the course of our conversation along came the late Prof. Jas. Neilson and we continued to talk about nut-growing. Prof. Neilson was interesting indeed. I could see he was a sincere man and most enthusiastic about the subject. He told me there was a Presbyterian Ukranian missionary in town who had brought out some hardy English walnuts from the Carpathian Mountains—a variety which he was sure would survive in Ontario and the Northern States and that it had great possibilities. The missionary was returning to Europe to bring out a shipment but needed, backing for the expedition. I met Prof. Neilson the following day. The sum required was $400.00 and he agreed to guarantee the sale of $400.00 worth in the U.S. at least. The next day I met Rev. Crath at the Exhibition display. We met off and on for two or three days. I could see no flaw in the project, so I raised the $400.00 by a bank-note. The banker thought I was crazy—and the missionary was on his way by the end of the week.

He arrived by mid-September and having had so many charges in the Ukraine, he knew where to go and just when the crop was being harvested. The walnuts were selected, dried, boxed and shipped by the middle of October. The shipment arrived in Toronto the first week of November—nearly two tons of them. I received with them, a bill of lading with port charges, export duties and freight. I was out another $100.00.

In two weeks, the Winter Fair opened and Mr. Corsan was invited to put on his nut exhibit as an attraction. In the meantime he was on the radio once a week to talk on health, food and various subjects, always getting around to nuts as a food—and this new discovery, the Carpathian walnut. The radio broadcasts brought interested people right to his exhibit. He gave an hourly talk on nuts and a pamphlet was given out. The Winter Fair sales grossed $300.00 and there was another $100.00 on follow-up sales by Christmas. The situation was at least easier.

Prof. Neilson before Christmas had taken ill and passed away in February. However into the picture came another man, H. J. Rahmlow, secretary of the Wisconsin Horticultural Association with about 600 affiliated societies. He wrote an article in the Country Gentleman and circularized the expedition of Rev. Crath to the Carpathian Mountains. We sent four shipments to Mr. Rahmlow in 25 and 50 lb. lots. Sales came in from all over Canada and the United States until spring. By spring we had cleared all expenses and had about $200.00 on hand, but the next problem was, what to do with the rest of the walnut seeds?

On Mr. Corsan's Echo Valley, there were two fields, one in the valley and one over the road. We broke up out of sod an acre in each field and planted about 40,000 seeds. Rev. Crath took to a farm near Welcome, Ont. about another 20,000. Our plantation required a good deal of attention, work and expense during the growing season. However 90% of the walnuts germinated and grew to trees about 6 inches high. Over 30,000 trees survived the next cold winter.

The following year we could scuffle them between the rows. Our nursery required less care and expense. During the summer they grew about a foot higher (15 in. average) but developed a very thick carrot-like tap root with numerous root hairs. By autumn 1936 it was evident we had to transplant. The seeds were planted originally 8 inches apart. So we divided up the lot by each taking one out of every three trees, thus leaving the trees in Echo Valley now 2 ft. apart. Rev. Crath took his trees to the farm at Welcome, 80 miles east of Toronto. They were planted on a slope below a thick woods from where melting snow and spring rains kept the field cold and wet until mid-summer. Rev. Crath's trees were practically a failure; in fact the area seemed to be unsuitable for walnut seedlings. Mr. Corsan's trees continued to grow, but even here the soil did not seem to be the most suitable.

I took mine to a sandy garden soil that had been under sod for 20 years. The sod was broken and thoroughly disced. The spring was wet and very favourable for transplanting. The trees on this soil grew very well without any fertilizer at all; nor did they require any spraying. The trees continued to grow deep and do better each succeeding year.

In the spring of 1939 I started to sell trees wholesale to the Dominion Nursery, Georgetown, Ont. Mr. Bradley, the president, carried more novelty items in his catalogue than any other nurseryman in Canada. I continued to plant more seeds until 1939.—The war stopped further importations, and I sold out all the trees by the spring of 1943.

So from my nursery probably went out some 10,000 trees; the weaker seedling always perished during the winter. From Mr. Corsan's nursery, another 10,000 trees—about half of these went to his son, Hebden Corsan in Michigan. Rev. Crath's nursery yielded not more than 5000. He imported a number of cherries, plums, grapes and others fruits, all of which did not do too well either.

During the period before the war, orders came in from everywhere—from British Columbia to Nova Scotia, even Newfoundland, besides nurseries in the United States. Orders from the prairie provinces were dissuaded but some customers insisted on a trial basis. Walnut seed, the first two years went mostly to Western Ontario, British Columbia and Nova Scotia. By 1939 the seedling nursery business that I had apparently fallen into, looked good. Rev. Crath and I talked the situation over. We decided to go to the country, lease some land. I would select the land and continue to grow seedlings and besides, import selected grafts to develop in Canada a hardy high quality grafted walnut tree.

In September we prepared to make another expedition. My banker was most agreeable this time. Rev. Crath got as far as New York where, awaiting the S. S. Batory to sail, the war broke out. The S. S. Pilsudski was sunk just out of Gdynia the next day. The S. S. Batory never did sail back to Poland. When he arrived home we went to the bank on a Saturday morning. The travellers' cheques were cancelled.

Rev. Crath in the 1936 expedition brought out a shipment of walnuts selected from the most northerly port of the Ukraine for Mr. Weschcke, St. Paul, Minn. I am not familiar with this part of his work.

Rev. Crath was a cheerful soul, an interesting and pleasant individual to talk to. He loved people and, especially, meeting people. He possessed a great love for humanity; he bore malice toward no one and charity to all except the Bolsheviks. He was a restless man—"always on the go". One could see he preferred to be missionary rather than a resident minister. Although he was away a good part of the time he was dearly loved by his family.

Shortly after his death, as an appreciation of his services as a minister among Ukranian families, special memorial services were held in Toronto, Oshawa and Detroit. I was invited to attend the Toronto service.

On a visit one day last August, 1952, to places where his Carpathian walnut trees were coming into bearing, he examined them and gazed at them with a look of joy and sadness. On the way home he was somewhat upset, he looked at me and said "Mr. Devitt, my good friend, at last our experiment is a success. Promise me two things; continue our work and go to the convention and tell our American friends to continue the work."

* * * * *

This is the story of the introduction of hardy Carpathian walnuts (Juglans regia) into Canada and the United States by the late Rev. Crath.

Looking back on the whole adventure (now twenty years ago) it would be only fair that I mention the names of three other men for the work they did to make the expedition a success. The late Professor James Neilson whose research in nut growing in Ontario and the United States was already well known should be mentioned. It was he who really "sparked" the expedition. To the late George H. Corsan whose nut growing experiment at Echo Valley was something unique in Ontario, credit is due for his enthusiasm and support of the late Reverend Crath. The American nut growers who were fortunate to obtain walnut seeds at the time through Wisconsin Horticultural Society can thank Mr. H. J. Rhamlow, then secretary. He took over the task of distributing the walnut seeds through the affiliated societies. He insisted that the seeds be tested for germination, kept in proper storage, and did everything possible to ensure success. However none of these men as I knew them then, and including myself, would want any credit, but we give full recognition to Reverend Crath for his work.

During the years spent in Poland Reverend Crath must have given the idea of growing hardy walnuts in Ontario and the Northern States considerable thought. He examined trees and nuts wherever he went; and continued gathering information each year. When I first met him I could see he had given walnut growing a great deal of study. He had great faith in his idea, and when leaving on his expedition 1934 he felt he was on a great mission. It should be remembered he made this arduous trip without pay and that he made very little money from the sale of walnut seeds or trees. No one did for that matter. It is also significant that in bringing these Carpathian walnuts out of Poland at that time, 1934, he did something that could never be done again. The trees he saw then probably went into rifle butts for use in World War II. The introduction of these walnuts into Ontario, met with varied success. Many bought them on a trial basis and were eventually rewarded; some looked on with skepticism and ridicule and a few thought that the growing of walnuts in Ontario was impossible. The intervening years, however, have brought forth a different picture. These seedling walnut trees are now bearing in Ontario and as late Reverend Crath predicted more than half of them are producing fair to good quality nuts. This is also true in the United States. In Ontario they grow well in the commercial apple districts and with variations mature nuts fully in 90 to 120 days (between Sept. 15 to October 15.) All of the best varieties should now be propagated by grafting to produce hundreds of hardy Crath Carpathian walnut trees. This project should always be one of the foremost with the members of the Northern Nut Growers Association. Twenty years from now and later, the number of hardy walnut trees producing nuts (Crath strain) should make a living monument to this obscure missionary—Rev. Paul C. Crath.

PRESIDENT BEST: Thank you very much, Mr. Devitt, for this very intriguing story. Truth is sometimes stranger than fiction. And we want to keep in touch with you, and we want to keep hearing from you, because you have got a big job to do yet.

MR. DEVITT: There is only one thing, ladies and gentlemen: I don't want to run into 5,000 letters to answer. Keep my name out of this. That is my walking-out request now. That's the story. I am going to continue to keep collecting samples. I hope some day to have a number myself of the best, and I might come back again sometime. I can't say every year; circumstances may be that I can't come. However, it's been a great pleasure for me to be here. I have wanted to come for 20 years, and I thought this year that I should come, because I am on this special mission of Reverend Crath's. Now you know what's going on in Ontario.

MR. SLATE: Mr. Chairman, I think the Association will answer the 5,000 letters, if he will ask.

MR. DEVITT: I didn't ask. Are there any questions?

DR. MCKAY: I'd like to ask a question. Was any scion wood ever brought over?

MR. DEVITT: There was some scion wood brought over by the Reverend Crath in the spring of 1935, and it was brought over on the boat. I remember in those years only one that grew on a tree belonging to Mr. Corsan. I don't think the other scion wood proved any good at all.

MR. STOKE: I got a little of that scion wood, and it had been waxed. The bark was nice and green, but the buds were dead.

MR. CALDWELL: Do you have a plantation of young, producing trees?

MR. DEVITT: No. My place, where I had those trees is now $3 million worth of buildings on 15 acres. You'd be looking down a street. They moved in in 1944, and built up 15 acres where I had one acre in the 15.

The Eastern Black Walnut as a Farm Timber Tree

JOHN DAVIDSON, Xenia, Ohio

Most people instinctively love trees. Perhaps this is an inherited result of arboreal ancestry. Even so, very few of us realize what an astonishingly close tie exists between the survival of trees and the well-being of the human race. Probably even fewer realize the very great importance, in the economy of animal life, of trees which bear nuts. Not alone for the sake of their nuts are they important, valuable as nuts are, but also for the sake of the unmatched timber which some of them produce, as well as for the sake of their service as soil conservers and builders, as beautifiers, and as silent, persistent builders of capital values.

In view of these outstanding qualities, it is strange that nut trees are today unfortunately and shamefully neglected in the north. Especially, I claim, is this true of the Eastern Black walnut. Here is a mystery. Why do not northern planters of trees plant more Eastern Black walnuts for their exceedingly valuable timber?

"Backward" Burma could give us lessons in intelligent forestry. It is said that the Burmese are permitted to clear their thickets and tropical woodlands for agricultural use only after they agree to plant a definite amount of that land in teak, perhaps the most valuable of all woods. It is said that, due to the effectiveness of this system, some 35,000 acres have now been stocked with this valuable timber.

There are two or three main reasons why the planting of Eastern Black walnut for timber is thus far not very common in America. (1). The native and favorable area of this tree is limited to a comparatively small section. (2), The tree grows well only in deep, fertile soil where quick-money crops have had the first call. Strip-mine planting is better than none at all, but such soil as is left after a strip-mine operation is hardly the best. (3) We are in too great a hurry. (4) Most farmers must have annual incomes, or they must quit farming.

What, then, are the offsetting reasons why this kind of planting should have an appeal to far-seeing people who are favorably located? In the first place, the Eastern Black walnut yields wood of unique quality. Pattern makers, who must work within tolerances of thousandths of an inch, prefer it. Walter Page, a well known sports writer has this to say: "Few woods come as close as walnut to fulfilling all the demands of a good gunstock: beauty of grain, workableness with cutting tools, resistance to warpage, weight or density in proportion to strength."

Another example of the many-sided versatility of this wood can be found in those timbered regions of America where termites are a problem for home owners. Termites seem to leave black walnut wood very much alone. It probably has a taste which termites cannot stomach. This is one reason why so many of the old rail fences of our ancestors in the walnut area were made of black walnut. The "ground-chunks," in particular, which were laid upon the ground under the corners of the worm-fences were often either of rock, or of walnut.

Just this year I watched the demolition of part of an old log cabin which was being riddled by termites. Many of the ordinary logs were in ruins but the walnut boards which had served as weather-boarding over the ends of some of the termite-infested logs were as sound and as beautifully preserved as they had been when they were placed there.

Is it any wonder that so many of the pioneers who had lived long enough in the termite area to see what could happen to other lumber, chose walnut, whenever they could get it, for structural work and for weatherboard protection?

Safety of operation is still another matter for consideration. If I wish to create an estate for my family or for my last years, how can I go about it with the best chance for success? Shall I go prospecting for precious metals? Thousands have failed at that job where but few have succeeded. Shall it be manufacturing? Count up the failures. For each success, at least ten go broke. Wall Street? The Wall Street journals themselves give the statistics. More than 90 percent of all persistent Wall Street gamblers lose money in the end. Farming? Much safer, but most farmers who have made much money in the past have accomplished it by way of an increase in the value of their land rather than through their farming operations. This is the result of fluctuating prices. Bad years often eat up the savings of good years. Then, too, the good farmer is a busy man. The better the year the busier he is. Very little time remains for side issues, such as the planting of trees.

As a matter of fact, as erosion of the soil progresses, as good, productive land becomes more scarce, and as farm labor becomes more and more difficult to employ, the attention of informed farm owners and operators has been turning more and more to soil-building, perennial, permanent and labor-saving crops. Of these, grass and tree crops are, far and away, the most promising today.

In view of what I have found out during the last 20 years, I am quite sure that, if I were starting now, I should expect to make farming a major element in my estate building, but it would be mostly tree and grass farming, not grain farming. I should need livestock, of course, to make use of the grass. And I like livestock.

This is what I ask of life: First of all, I must enjoy my work. I do not care to spend all my days in getting ready to live. My job must lie along the road I like to travel. I do not care to work at a task so burdensome, so time-consuming that I have no heart for the enjoyment of living. At the same time, a big part of the plan must be to find a good, safe way to build an estate. It must be feasible, practical, enjoyable.

I believe, in the light of my own recent experience, that if one is properly situated, there is much to be said for the idea of undertaking the practice of forestry upon a rather liberal scale using Eastern Black walnut trees as a foundation.

In the first place, I ask, what living thing upon one's farm will cause less labor than a forest tree? I know of none. This fulfills the first requirement. A forest tree calls for a minimum of attention as compared with other crops. This is especially true if one permits livestock to keep down weeds and brush. And here I am likely to be called a heretic. The authorities say, "No grazing in a forest". However, in this field of forestry there are some traditional maxims which, to say the least, are not capable of universal application. The authorities, too, have been known to rely upon what other authorities tell them—without investigating the facts for themselves. It is not well to rely too implicitly or trustfully upon the "authorities", either ecclesiastical or scientific. "No grazing" is a valid enough rule to follow in the ordinary forest, but I have found that after the trees are well grown we can graze the land under a deep-rooted walnut tree which is planted in deep, rich soil as we would graze any meadow land—in reason and in moderation. The practice is profitable for annual income and it keeps down the fire hazard. One bad fire in an ungrazed or unmown piece of brush-covered undergrowth can destroy in an hour 50 years of timber growth. If we plant deep-rooted nut trees in deep, rich soil, and if we fertilize that soil as any valuable permanent pasture land is fertilized, we can graze that land without injury to the trees or the land.

One other reason which is given for the prohibition of grazing is the desire to save young tree growth. This is justified in ordinary forestry practice by the need to get annual income through successive cuttings. The young growth must be encouraged to come on. Even so, it must be thinned as it comes. However, a forest of black walnut trees yields its annual income in another way—through its nuts and its livestock.

Trees in such a forest should be planted close enough together to cause them to reach straight up as they grow. They will not all reach straight up, of course, but enough will do so to produce as many saw-logs as will normally grow in a forest; that is, if they have been properly planted in the first place.

In my own modified forest-type planting, the black walnut trees stand 8 feet apart in rows 20 feet apart. The 20-foot spacing between rows was planned to provide more sunlight for nut production during the early years. No one ever planted a forest in that way, so far as I know. The trees are now 17 years old, about 3250 of them in all. In the best soil of this 20 acres I can count about 1000 forest-type, straight, well-grown trees. There are about 1500 lesser trees, low-limbed trees which will eventually be used, perhaps, for posts or some such purpose. There are, I regret to say, about 750 trees that will never be worth anything. An eroded slope and a hidden clay bed explain these misbegotten dwarfs.

The variable growth of these trees proves that the first care in making a planting of walnut for timber should be to plant in good soil, deep and well drained. Bottom land, even some that is occasionally overflown with flood-water, and therefore not the best wheat land, should be excellent for Eastern Black walnuts if the drainage is good. Rule two:—Select your seed or seedlings from large, straight-growing, healthy parents. This rule needs explanation.

In last October's NUTSHELL, an organ of the Northern Nut Growers' Association, Spencer Chase, its editor, called attention to a showing of Carpathian Persian walnuts by Mr. H. F. Stoke which illustrated what was called "the variability of seedling trees." The progenitor of these seedlings was a Lancaster Carpathian Persian walnut tree. Differences in size, appearance and quality of nuts from these seedlings were said to have been remarkable. Such differences, we know, are greater with some species than with others. A variable ancestry often results in a variable progeny. On the other hand, I know that my Eastern American black walnuts do tend to reproduce the characteristics of their parents. I have long rows of seedling trees, all from one parent tree, standing alongside long rows of seedlings from another parent. The similarity of the tree growth and nut production of the trees in their own rows, and their contrast in growth of trees and nuts to those in adjoining rows is striking and to me conclusive. A photograph taken by Dr. O. D. Diller, of Ohio State University, in 1946, shows trees in a right-hand row grown from seed of a tree on the Kinsey farm, while on the left are seedlings of a tree on the McCoy farm. The circumference of trunks of Kinsey seedlings averages more than twice that of McCoy trees. Same soil, same age (11 years), same treatment.

Those same trees, now 17 years old, still show these striking characteristics. It is true that each tree in a row of seedlings is an individual in its own right. No others are exactly like it. Nevertheless, the family resemblances in that row are very like those in human families. They are especially noticeable in the nuts—with, for example, rough shells in one row and smooth shells in another; mainly large nuts in one and mainly small nuts in an adjoining family. Also, some rows have mostly straight-growing trees, others are predominantly branchy, like the Thomas.

It should be said in this connection that practically all of the parent trees of these seedlings stood in isolated positions and little subject to pollination from other trees.

So much for the Eastern Black walnut's evidence of hereditary influence.
So, let us take inventory.

Today, I figure that the thousand well-grown trees in this planting are each adding a dollar per year to the value of the 20 acres upon which they stand. $1000 per year in all. This estimate, which of course seems optimistic, is based upon the statement of a walnut tree buyer—a sawmill man—who tells me that a well grown, deep-soil, 50-year-old Eastern Black walnut tree should average about $50 in value. Thus far, my 17-year-old youngsters, some of them nearly 3 feet in girth (9-1/2 to 11 or more inches in diameter at breast height) look promising.

In addition to the potential added value of $1000 per year, this 20 acres has produced about two tons of in-hull nuts from selected trees only, in each of the past two years, (with more than that in prospect this year), while the land beneath the trees grows good pasture and helps to support a small herd of cattle and calves.

Once the trees were thoroughly established, the labor investment has been very small. Nature, for the most part, has done her own pruning, and has done it better than I deserve. Since the first half-dozen years, there has been no cultivation. The trees have been practically trouble-free. Winds have damaged a few and one wet spot has killed three trees. There are a few black locust trees among the walnuts. I can see no evidence that the walnuts have made either better or poorer growth because of the proximity of these nitrogen storers. Perhaps the evidence will show up later. We shall see.

The last item in this inventory, added value to the estate, is still potential, but the potential is surprising. If my walnut timber buyer's estimate is trustworthy, in 17 years the best 1000 trees have added 17,000 potential dollars to the value of that 20 acres. And they have done it with safety, with little labor on my part and, lately, with annual dividends of excellent nuts and good pasture. No other kind of forestry that I know of can do that.

It would, of course, be foolish to claim that the kind of management here described would be wise or workable with other forest species. Wise forest management requires, first of all, that the choice of species shall be adapted to the soil and climate favored by that species. It requires a proper density of stand. Finally, good management demands that a choice be made of the most valuable type of timber that can be produced upon your land. If you can grow walnut successfully, it would be foolish to grow Willow or Box Elder.

One necessary thing I must do, a thing that I should advise others similarly situated to do, namely, place a tight legal fence around this twenty acres in order to assure the trees' survival until 50 years have proved or disproved my faith. For, after all, these trees are guinea pigs—pioneering. They break some traditional rules. The land they stand on is grazed. They are not set the traditional 80 feet apart. Their nut crops may dwindle away. One never sees walnut trees growing in pure stands—always with other species which scatter their seeds and push in. They are not monopolists—like the pines.

Very well, we shall see. My own small experiment in unorthodox ways has the temerity to suggest a new treatment for a species of timber tree which I personally regard as America's very best gift of its kind to the world. For 17 years my modified forest-type planting of black walnut trees has not disappointed me. That is why I now believe that the farmer in the Eastern black walnut's native habitat who fails to set out these nut trees wherever he can is losing a good opportunity.

The McKinster Persian Walnut

P. E. MACHOVINA, Columbus, Ohio

The McKinster Persian walnut first attracted public attention when it received first place in the preliminary Persian walnut contest conducted by the Northern Nut Growers Association in 1949. In the follow-up contest of 1950, the variety was granted third place. The McKinster tree resulted from Crath Carpathian seed secured through the Wisconsin Horticultural Society by Mr. Ray McKinster of Columbus, Ohio. The seed was obtained and planted in the spring of 1938, hence the tree is now 15 years of age. Probably this seed was secured by Rev. Crath during his last trip when, presumably, he made some of his most careful selections.

Altogether, Mr. McKinster planted eleven Crath nuts in the back yard of his small city lot, nine of which germinated. All but two of the resulting seedlings were distributed to friends and relatives living in the countryside. Many of these trees have disappeared due to accidents and lack of care; a few, however, have produced nuts which apparently are not exceptional. One such nut examined was of medium size with a fairly thick shell; the kernel was of good flavor but somewhat bitter. Of the two trees retained by Mr. McKinster, both were permitted to grow where the seed was planted, however one died of an unknown cause when five years of age. Nuts produced by this tree were inferior to those produced by the survivor which later became known as the McKinster variety.

[Illustration]

[Illustration]

The McKinster tree may be viewed in the accompanying illustrations which show it without foliage and with foliage. The pictures were taken in March and August, respectively, 1953. Since it is a very beautiful and relatively clean tree, the McKinster would be desirable in any yard. From the pictures, it will be noted that the site is unfortunate being restricted by two garages, an alley, and with numerous overhead utility wires. Some effort was made two years ago to keep the tree out of the wires by cutting back top growth. The trimming stimulated the usual vigorous, annual growth to produce terminals as great as 10 feet in one year. Ordinarily, annual growths of 6 feet of husky wood are not unusual. New wood and buds are hardy in appearance and assume a rich brown color upon maturing. With such growth, cutting 1000 feet of scion wood annually would be no problem. The tree is now about 35 feet in height with a like spread.

The bearing record of the McKinster Persian has been excellent. Its first crop of five or six nuts was borne at five years of age and large crops have been consistently set each year since with but one exception. Crop records have been impossible to maintain since the tree is located in a section of the city where squirrels abound. Any nuts saved must be protected by screen-wire cages. The hunger of the squirrels for the nuts is amazing. For example, in 1951, they descended upon the tree during the first week of July and destroyed all nuts of the large crop within two weeks. These nuts could not possibly have been filled and, consequently, could have been of little nutrient value. In their voracity, the squirrels frequently work on the cages and sometimes manage to break through. To facilitate this endeavor, limbs up to one inch in diameter carrying cages are sometimes cut off so the squirrels can attack more conveniently from the ground.

[Illustration]

It could be that nuts saved by caging are sometimes inferior. The cages used are made by folding window screen into a doubled, 4 to 6 inch square, producing an "envelope" with wire sewn edges. Crowding from one to three nuts into a cage may result in inhibited development, especially since considerable leaf surface must be removed when installing a cage. Because Mr. McKinster has been ill for several years, it has been difficult to accomplish the caging; consequently, but few nuts are saved. For example, in 1950, there were insufficient nuts to meet the 25 nut sample required by the contest judges. All available nuts, some probably inferior, were entered, and it is a matter of conjecture whether the nuts might have been judged higher under different circumstances. Also conjectural are the questions of crop size and regularity of bearing in the event the tree was permitted to mature its nuts.

The McKinster nuts, which were the principal consideration in the contests rather than the tree itself, are excellent in nearly all aspects. They are of medium size, averaging around 35 to the pound, with about 52 per cent kernel. The shell is moderately thin, light in color, well sealed, of a satisfactory shape (see illustration), and with excellent cracking qualities. The kernel is light, plump, of excellent flavor, and in the words of one authority, "probably rank with the best in freedom from bitterness." The nuts are matured by the middle of September and, later, drop, free of the husk.

Blooming of the parent tree usually occurs during the first week of May. In 1951, the staminate flowers were first observed April 29 and the pistillate flowers May 2. The narrator visited the tree on May 4 at which time some catkins had fallen; it was estimated that one-half to two-thirds of the pollen had been shed. The pistillate flowers appeared to be either receptive or slightly past at this stage. Mr. McKinster commented that the blooming period of 1951 was from a few days to a week earlier than usual. In 1952, the shedding of pollen started on April 29. From the foregoing, it may be noted that the McKinster Persian is entirely or largely self-pollinating. No other Persian walnut trees which might assist in pollination occur in the vicinity and all known seedlings raised from nuts of the parent McKinster tree have appeared to be pure Persian. Leafing out starts about a week before the bloom appears. In the fall, leaves are colored a beautiful bronze and are brought down in a great shower by the first frost.

A sample of the soil in which the McKinster tree is growing, taken at a depth of 6 inches, was tested in July 1950. The results specify that the soil is mostly silt with an average amount of organic matter and that evidence indicates it to contain ashes. The acidity is specified as "neutral", potash "high", and phosphate "low". No mention is made of available nitrogen; however, the dark green color of the leaves and vigorousness of growth would indicate a satisfactory supply. Fertilizer in small amount was applied once or twice during the early life of the tree; also, during this period, Mr. McKinster "spaded in" garbage, etc., to increase the humus content of the soil. In 1951, the narrator checked the pH of the soil near the surface and obtained a value of 6.5.

Only one instance of damage due to climatic conditions and none whatsoever from insects and diseases has ever been observed with the parent McKinster tree. Undoubtedly, the city location offers some protection from frost, but may also be detrimental, on occasion, through heat reflected from the many surrounding white-painted buildings. For example, an unseasonable warm spell occurred in Columbus during the latter part of the first week in April of the current year. The heat, lasting for several days, reached a high of 80.4 degrees and, as a result, the McKinster tree started vegetating. Leaf growths of from one-half to one inch had been reached when normal conditions returned. Two weeks later, a cold spell with snow and temperatures of 22 degrees killed the new growth but did not injure the wood. Following this, leafing re-occurred, but at a slower rate and somewhat later than normal. The size ultimately attained by the leaves is about one-half their usual size, and, consequently, the accompanying illustration, taken this summer, does not exhibit the usual luxuriant appearance of the tree. A large part of the bloom was damaged by the cold, hence the tree set a lighter crop of nuts than usual.

In connection with early vegetating, it may be remarked that Mr. McKinster, several years ago, presented two small grafted trees of his variety to a relative living in eastern Kentucky. These trees were planted on low ground and were killed the first year by late spring frosts after leafing out twice. Thus it seems evident that the McKinster tree has the fault, common in Carpathians, of leafing out too early and being injured by late spring frosts, especially when planted too far south. Three other trees, grafted by Mr. McKinster and now about four years from the graft, are situated in the countryside several miles south of Columbus, Ohio, where they are doing excellently, having never been damaged.

The writer has several three year old McKinster grafts at his property in southeastern Ohio which were deliberately set on stocks located in a bad frost pocket. The grafts, which are adjacent to a woods, have made fair growth each spring but are injured during the summer by an insect laying eggs in the succulent growth. The portion of terminal above the point of sting invariably dies the following winter and has the appearance produced by winter killing. This damage has not been unique with the McKinster, having also occurred with the McDermid, Watt, Burtner, and other Persian varieties growing nearby; some of the latter were killed outright the first winter after grafting.

A one-year McKinster grafted tree with three feet of growth above the graft was cut back and transplanted by the writer to the yard of his Columbus, Ohio, home during the winter of 1952. Growth the following spring was about two feet and obtained in rather poor soil. After a long absence during the summer which was attended by a prolonged drouth, the tree was found in a dying condition, having lost all its leaves. Hurried watering resulted in a complete new coat of leaves and a small amount of additional terminal growth. The tree matured its growth and withstood the winter nicely, but suffered, similar to the parent, from the April, 1953, unseasonable weather. Growth this summer from adventitious buds has been poor.

Unfortunately, the McKinster variety saw but little testing in other parts of the country prior to its recognition in 1949. So that this report might be as complete as possible, requests were sent to several dozen experimenters who are known to have grafted the McKinster, asking for their experiences and opinions of the variety. The requests went to people scattered generally throughout the northeastern portion of the country, a very few of which had received scion wood in 1950, a larger portion in 1951, and the bulk in 1952. For the most part, replies indicate satisfaction and even enthusiasm; very few report failure. Definite conclusions cannot be drawn because of the short time of trial; however, a general description of experiences will provide indications.

Few experimenters report failure in grafting, most stating the variety to be "easy to graft." Any who mention the characteristic, state that "grafts are vigorous," or that "it is a fairly rapid grower." For the experimenters, the McKinster seems to be about "average" in its time of leafing out. Many report a set of nuts the second year after grafting. As to time of maturing new growth, the reply of Mr. Stephen Bernath of New York, "New growth matures about the end of September," is fairly typical, as is the reply of Dr. R. T. Dunstan of North Carolina, "It appears to harden wood well ahead of frost." Most reports indicate no winter injury but are tempered by cautious observations that temperatures had not been low. Mr. H. F. Stoke of Virginia, who grafted the McKinster in the spring of 1950, reports: "Pistillate buds developed during the summer of 1951 were killed by a frost catching new growth in the spring of 1952." Mr. John Howe of Missouri was the sole reporter of catastrophe when he stated: "My McKinster graft was killed by the November, 1951, cold while the Lake and McDermid varieties close by were not hurt." Mr. Sylvester Shessler of northern Ohio reports: "The McKinster withstood, without injury, the 1951 winter which killed 4 hybrids and a Crath, and injured several others." Mr. Harry P. Burgart of Michigan reports the variety as doing extra well for him. The only reply mentioning disease came from Dr. Dunstan who says: "It has been fairly clean in foliage so far, less susceptible to leaf spot than some." Mr. John Gerstenmaier of Massillon, Ohio, grafted the McKinster in 1951 and reports excellent growth with a diameter of 2 inches at the graft after two years. He reports temperatures of 16 degrees very early in November which caused no harm, and pistillate bloom from May 8 to 16, 1952, which materialized into a crop of two nuts; pollen was supplied by adjacent Carpathians. Leafing out ordinarily starts about a week prior to the bloom for Mr. Gerstenmaier; but, in April, 1953, the unseasonable weather conditions also occurring in his vicinity caused early vegetating and killing, while at nearby Orrville, the variety was undamaged.

Mr. Gilbert Becker of Michigan, who is enthusiastic about the McKinster variety, believes the qualities of the nut to be superb and the characteristics of the tree satisfactory. He is of the opinion that the too-short dormancy of the variety is not a serious objection, particularly with climatic conditions such as those experienced in Michigan. Even in central Ohio, where peach and apple crops are frequently lost due to spring frosts, the McKinster has not been injured when located in the countryside and injured but once during its 15 years, with a resultant smaller than usual crop, when located in the city.

In closing, it might be well to comment on the fact that nuts of the McKinster, Hansen and Jacobs varieties alone placed high in both the 1949 and 1950 N.N.G.A. contests and that different panels of judges served in the two events. Certainly the nuts of these varieties are of a superior quality, and it would seem important to determine those parts of the country where these varieties are sufficiently hardy to be of commercial value. Certainly these varieties should be given every opportunity to prove themselves.

Carpathian Walnuts in the Columbia River Basin

LYNN TUTTLE, Clarkston, Wash.

Mr. Chairman and friends of the nut culture, I regret that I cannot meet with you at this time, but fate seems to have decreed otherwise. The pleasant memory of the meeting at Guelph is still with me and I must admit a feeling of humility as I prepare this paper for a group of sincere and devoted people united in a common interest.

The Pacific Northwest extends from the Rocky Mountains to the Pacific Ocean. This area is divided by the Cascade Mountains which run north and south. Between the Cascades and the Pacific we have a coastal area wherein winters are generally mild, summers cool, and rainfall abundant. Under these, conditions many plants do not attain a high degree of dormancy. Zero weather in Seattle will damage walnuts as much as will twenty-five degrees below zero in the more continental climate east of the Cascades. Carpathian walnuts have proved their value under both coastal and interior conditions. This hardiness is at least partially due to their tendency to mature their buds and harden their growth earlier in the fall than do other types of English walnuts.

Between the Cascades and the Rockies is a vast area part plateau and part mountains. It is scarred with deep canyons and crossed by swift streams fed from springs and mountain snows. Roughly the elevation of farm lands varies from five hundred to over forty-five hundred feet. Depending largely on slope and elevation, rainfall varies from about eight to twenty-five inches. In general, summer days are bright, dry, and fairly hot. Nights are clear and cool. Winters are unpredictable but always vary much according to location and elevation. Infrequently temperatures may drop to more than twenty below zero at Clarkston. Other areas of similar elevation may be five to ten degrees colder.

For the sake of clarity and to reduce the territory covered, we will confine ourselves largely to that part of the Columbia Basin irrigated and to be irrigated in Central Washington. The application is general, however.

Grand Coulee Dam has made feasible the irrigation of about 1-1/4 million acres of sage brush, bunch grass, and marginal wheat lands. Irrigation is already practised over other vast acreages. This land is level to rolling, and is of sandy loam nature. It is deeply under-laid by layers of lava rock—in places thousands of feet thick. As in most arid climates the soil is rich in minerals but low in nitrogen and organic matter. Under irrigation production is amazing. The growing season is sufficiently long for Carpathian walnuts anywhere in the irrigated area.

Walnuts originally from Southern Europe have proved unsatisfactory because they killed at 20 to 25 below zero. It was discouraging to have a ten or fifteen year old tree killed outright by an unusual winter. But it was just these conditions that led to the discovery of the Schafer walnut. This tree survived the winters of 1936 and 1937 in a part of the Yakima valley where all other varieties similarly located were killed. So far as I know, none of these were Carpathians.

Many Carpathians are now being planted, mostly for yard trees, but promise to eventually become one of the big commercial crops of the area. However, skepticism on the part of the public and scarcity of nursery stock has delayed commercial planting. A fair portion of good growers are now convinced that commercial growing is profitable and stock, our own and others, is becoming more plentiful.

Our experience has been confined largely to the Schafer walnut and it is, aside from some promising seedlings, so far as we know, the only proven Carpathian in this area. We do not wish to discredit possibilities of any other variety, but must speak out of our own observations. There are numerous small, commercial plantings now producing, the nuts being sold locally. Accurate production figures are not available and if available would vary greatly due to the care given the trees. The Schafer, and this will undoubtedly hold true of some other Carpathians, bears more at five years than a Franquette does at ten. I have seen apple boxes (about one bushel) of nuts harvested from five and six years old trees. Production increases rapidly with age.

As with fruit trees good air drainage and good soil drainage are desirable for the walnut orchard. The Schafer starts fairly early in the spring and new leaves are easily nipped by late frosts. A severe late freeze might also injure new growth although I do not recall a crop having been lost due to this cause. Although pollinizers have not been used, we think that on young trees and in some years they might insure a better crop. We are now propagating two pollinizing varieties the catkins of which come out later than the Schafer.

Trees planted sixty feet apart permit inter-planting to row and other crops for several years. Columbia Basin lands under irrigation produce enormous crops of potatoes, beans, sugar beets, rutabagas, green peas, clover or alfalfa seed, peppermint oil, and fruit. Average potato—20 tons, alfalfa hay—7 tons (three cuttings), alfalfa seed—800 pounds, dry beans—2,500 pounds, wheat—70 to 100 bushels. In some areas peach or apricot trees make good fillers.

Carpathians also fit into the picture as yard trees, for border plantings,—either to utilize run-off water or to use water wasted along ditches and pipe lines and for wind breaks. This open country is naturally windy and trees greatly reduce the ground velocity of wind.

Nut production in this area appears to be much heavier than on the coast or in California with varieties now being grown there. So far we are pest-free. The potentials of good Carpathian walnuts in this area are unlimited.

Walnuts and Filberts in Southern Wisconsin

C. F. LADWIG, Beloit, Wisc.

My farm is located a few blocks north of the Illinois-Wisconsin line on a rise overlooking the city of Beloit, whose western limits are almost adjacent to my land. Temperature in this section ranges from 100 degrees above to 30 degrees below zero; rarely reaching either extreme—with an average frost free period of 173 days. Rainfall averages approximately 35 inches. Walnut, butternut, bitternut, hazel and hickory are native, but just about non-existent in my vicinity except on my place in the young state.

The land on my place has been tobaccoed and corned out for over 100 years and its once rich clay loam with sandy streaks was unable to grow ragweed over 2 inches high when I bought it. Trying to grow nut trees in this soil presents problems as you well know. My problem was not to get them to grow vigorously but to get them to grow at all. However, by using fertile spots, formerly barnyard and around the house, I got several walnuts and filberts started.

I have an eight year old Crath #1, two Myers black walnuts, about the same age, Cochrane and Thomas, 6 years, all obtained from Mr. Berhow, and a fine assortment of Jones hybrid filberts from Mrs. Langdoc, a Rush filbert from Mr. Burgart, two European filberts from the New York State Fruit Testing Association, some hybrid seedlings, some native hazels from seed, some bitternut seedlings from Mr. Weschcke, a few native hickory seedlings, an American chestnut seedling from Scarff, 2 butternut seedlings, 2 nice Chinese tree hazels from Mr. Shessler, several Jacobs walnut seedlings, and regia & hindsii hybrids from seed of Mr. Pozzi, some Crath seedlings and a number of Thomas black walnut seedlings—also native walnut seedlings.

Mr. Shessler and Prof. J. C. McDaniel have been a source of help, advice, and inspiration to me and I am deeply indebted to them, as well as to many other members of the N.N.G.A. who have shared their experiences with me.

How have the trees done? The Crath #1 is bearing a few nuts this year. It had no catkins, but the Cochrane was loaded with staminate bloom at the right time. I got busy with the Cochrane pollen and a brush and went to work on the Crath pistillate bloom. Very pleased with this cross I looked the Crath over a few days later to check on progress. I picked the little nutlets off the ground and inspected them carefully, then threw them into the chickens to see if they would eat them. Back in my mind was the feeling that Mother Nature thought I was getting too big for my britches and decided to teach me a lesson. However she generously allowed a few air pollinated nutlets to grow, and so there will be a small crop of the round and plump smooth green balls.

The Crath #1 is not perfectly hardy as it freezes back an inch or two in the cold winters. Two years ago the warm wet fall left it unprepared for the sudden onslaught of winter and several whole branches died and the trunk split open, the split sounding like a rifle shot one cold, crisp evening. I happened to be standing by it at the time.

The Myers black walnuts are splendid trees and just about hardy. They bore a few nuts and second and third year from planting, which sapped their vitality. They then bore nothing for about three years, which happened to be unfavorable years for walnuts anyway, and began to bear again this year with a moderate crop. It looks like the plum curculio, my arch insect enemy, is trying the nuts for size. I saved some Cochrane pollen and went to work on the Myers, with you know what results. However three of the nutlets stayed on the tree; so that I may have effected a cross between Myers and Cochrane.

Thomas has acted peculiarly for me. It went thru the devastating winters of 1950 and 1951 in fine shape, then froze back last winter when the temperatures never went below 5 degrees below zero. The very dry fall should have ripened all branches to perfection. My mule, Zombie, took a liking to the branches and leaves of this tree, so it is now trimmed up like an umbrella. The small nut crop must have also gone down Zombie's gullet. He is more destructive to walnut and plum than the curculio. (Tie him up. Ed.) Thomas does not seem to have a great future up here.

Now Cochrane is different. If that little tree has as many nuts on it as it had catkins this year, I'm going to have to move the corn out of the crib and put the walnuts in there. It is not a fast growing tree, but this may be the fault of the spot it is in, judging by the color of the leaves. I never got around to fertilizing it.

Now that I told you about the Cochrane, I'll have to tell you about the "Wayne" black walnut. It is eight years old, stands about eight feet high and is hardy. My Black Walnut seedlings stand from six inches to six feet high. They go back to six inches every other year when I cut them down to graft them. Nobody in the nut tree field can call me a grafter. I'll make him prove it!

The hickory, butternut, bitternut, and chestnut are step children and fend for themselves on less desirable soil. All are small. The regia-hindsii hybrids are small and young and are being given special care, but may not be perfectly hardy. They grow well.

The Jones hybrid filberts stand from six to eight feet high, except those planted recently. This year they have a fair crop. The catkins came thru the winter in good shape for the most part. My two European filberts, which have lost their identity, but are either Italian Red, Cosford, or Medium Long, (one of the three perished) usually suffer the loss of their catkins and occasionally lose a branch or two to winter's icy fingers.

To me, the filberts are fascinating at all times of the year. When the snow is deep and the cold bites deep, their tight little catkins always hold forth the comfortable promise of spring. When spring does come the thrill of the tiny red blossoms and lumbering catkins is as real and enduring as the promise of a crop of the shiny nuts is fickle. Then, of course, after the last tiny blossom has faded and the last catkin has withered, the leaves push forth. To me, these tiny leaves are a sight comparable to the opening and unfurling of the various varieties of the grape. Then enters the element of suspense, between the time of leafing out and the time when the little nut clusters appear.

My bushes are all growing together on a rise of ground near an old barn foundation. The ground is rich and they love it. Each bush is individual and distinctive as are their nuts—some tucked far in the husk, some bulging out in a precarious fashion, some fat and round, others long and narrow. They're interesting. I can let the butternuts, bitternuts and hickories pass, the heartnuts, chestnuts, and pecans can wait until I am sure they will bear here. The walnut will grow up along with the other trees—blending into the landscape, but the filberts, like Zombie, call attention to themselves every day of the year.

Somebody said recently that the emphasis in England is in being, and in our country in becoming. I imagine our land stopped being with the disappearance of the Indian and the primeval forest and is now in the process of becoming something else. What that something else is we don't know, and each generation carries a new set of values, but we all know that to become something better, trees must and will figure in the plans of all generations—better and more useful and more disease resistant trees. It is significant that nut trees lead in these requirements.

Biology, Distribution and Control of the Walnut Husk Maggot

DR. F. L. GAMBRELL, New York State Agricultural Experiment Station,
Geneva, N. Y.

DR. GAMBRELL: Mr. Chairman, ladies and gentlemen, some 22 years ago, I believe it was, I attended one of your meetings at the Experiment Station in Geneva, and at that time I gave a little talk on the walnut husk maggot. Perhaps some of you are old enough to have been there and remembered something about it, or maybe you are old enough so that you have forgotten as much as I have, so it would be worth talking over again. At any rate, when the chairman of your program committee wrote Dr. Chapman, asking him if he might talk, he came to me and said, "Would you be willing to do this?" I said I'd be willing but I didn't know whether I'd be able. But finally, the pressure was so great that I said yes, and I am here.

After I accepted the invitation, I made up my mind that I would like to bring myself up to date as much as possible on recent developments on walnuts, so I took the liberty of writing to a lot of our entomological colleagues and talking to one of your members, Mr. Slate, in the hope that I might get some more recent information on the maggots, or, particularly, the control of this walnut husk maggot. I wrote to some 10 or 15 entomologists in 15 states, as well as the United States Department of Agriculture in Washington and to our neighbors on the north in Ottawa. I must say that I have had a very fine response from everybody. They were all very willing to help, but practically all of them had the same answer: while they knew there was such a bug, they didn't know too much about it as an economic pest. So that left us all right in the same boat, with about two exceptions, as when we began. Our friends to the north in Canada sent some very nice information. We also had some information from the U. S. Bureau of Entomology and Plant Quarantine, Washington, D. C., together with some illustrated material. Also our good friend, Dr. Boyce, at the Citrus Experiment Station, in Riverside, California, with whom I have discussed the walnut husk maggot problem quite a few years ago, had a very nice bit of information and illustrative material which he provided. Incidentally, he is the man who has been mainly responsible for the development of the walnut husk fly control program for the nut industry in California. I would certainly like to take this opportunity to acknowledge any contributions he or the other people have made towards this discussion.

In New York State we have in our official list of insects about 30 species of fruit flies that are catalogued, but only about five of these can be classified as of economic importance. Two of these occur on the cherries, both sweets and sours, and are called the cherry maggots. Another one on apples, known as apple maggot, and a related form on blueberry. And then, of course, the walnut husk maggot, and one other which occasionally occurs on currants, but this one, of course, is of less importance than the others.

The fruit industry, of course, in New York is quite large, both apples and cherries, so that there is a considerable problem there as far as control is concerned. The growers spend thousands of dollars every year in combatting the various species of fruit flies. The interesting thing in this connection is that throughout the last 25 years with which I am familiar with the cherry fruit flies—in fact, that was one of the first projects I worked on in cooperation with Dr. Hugh Glasgow when I came to the Experiment Station in 1925—the control measures which we developed in 1925 to 1927 are essentially the ones which we are still using today; that is, for the most part. There have been various attempts to change the control program through the introduction of these newer insecticides, and some progress has been made, but in every case they have been wrought with some difficulties. At the present time the official state recommendations for the control of apple maggot and cherry maggot still include the use of arsenate of lead under some conditions. I mention that at this point because it is of some significance in the overall control. I am going to discuss that later on.

As far as the host plants and distribution of the walnut husk maggot is concerned, according to the original description which was published almost a hundred years ago, it was listed as occurring in and to the Middle States. That is a little bit indefinite, but at least it occurs all over the Eastern United States and as far west as Kansas. Then the one which occurs in California, which has since been called Rhagoletis completus (?) looks very similar to the one that we have here, but there are slight taxonomic differences, so at least it is considered a different species. At any rate, it is very similar to the one we have here, and this whole group of fruit flies that we have been talking about have a lot of similarity in their wing patterns and things of that sort.

And the fact that I mentioned the control as generally as I did is of significance in that all of these flies of the various species are apparently susceptible to the same type of control measure.

As far as the host plants are concerned, I have personally observed injury on all of our common Juglans species that I have run across in New York State and in some of the states to the south of us, including butternut, Japanese walnut, English walnut and black walnut. I have seen reports of infestations which were recorded in hickory, but I personally have not seen them.

I'd just like to have a show of hands. How many in the audience here have had experience with the walnut husk maggot or had injury on the fruit? (Showing of hands.) I see the majority of you certainly know what it is, but just as a brief reminder, the type of injury, of course, varies somewhat depending possibly on the variety and time of year at which the fruits first become infested. We know, of course, that the flies do not begin to puncture the husk until they attain a certain degree of softness. Early in the season they are not able, apparently, to penetrate the husk with the ovipositor, and that, of course, varies not only with hardness but with varieties. The flies, of course, may be seen on the fruit even though they are not able to penetrate the husk and deposit their eggs. These husks, of course, many of them, become dry and hard after they have been tunnelled out, and it is almost impossible to clean the shells. Occasionally you have nuts in which you have a separation of the suture, and in those cases you very frequently get the exudate from the husk penetrating through the suture in the shell onto the kernels themselves, and in those cases molds may grow on the kernels so that those fruits are no good.

In connection with this injury I am going to show you some slides in a few minutes, but the preceding speaker made reference to a type of injury which occurred on the terminal growth of a walnut tree and that is one that we have had a lot of inquiries at the Experiment Station about, injury to the new terminal growth fairly early in the season. That probably, in most cases, is caused by the butternut or the walnut curculio. Early in the season these adults begin feeding on the new terminal growth, and they even puncture the new growth and lay their eggs there before the nuts are large enough for them to attack and very often considerable killing back of the terminal growth occurs. I have seen it on English walnut seedlings in nursery rows where there would be very large kill-back from the walnut curculio. Superficially the injury on the fruit is quite similar to that of the husk maggot.

(First slide.) This first slide is just to give you some idea of the general areas of fruit growing and distribution in New York State. The eastern section, right-hand side, Champlain Valley and Hudson Valley, are primarily apple maggot regions. Some walnut husk fly probably occurs there, but they are predominantly apple-growing areas. In the central part of the state, northern, particularly, we have fruit, and as far as I know, there are no plantings of walnuts there, though you people may know of some. In The Ontario Plains section south of Lake Ontario is one of our big fruit belts in the State. Some walnuts are also grown here. Consequently this area has in it apple, walnut and cherry maggot flies, and, of course, they will be lapping over in all those areas into surrounding territories. But this gives you an idea, in a general way, of the distribution of the host plants and the flies about which I have been speaking.

(Next slide.) Those flies get pretty big when you get them up there. They are not that easy to see in the field. The ones on the top are the species found on cherries. The one on the lower left is the apple maggot, the one on the lower right is walnut husk maggot. The only difference you can see here is in the wing pattern but in nature they differ in color. They all have a little different wing pattern. Also, there is a little difference in size, the walnut husk maggot being the biggest of the four species shown here.

(Next slide.) I have shown here the emergence date of the various species, including the cherry fruit flies, the apple maggot and the walnut husk fly. And you notice that beginning over about the first week in June you have emergence of the cherry fruit flies, and you have a continuance of emergence of some of these species up until at least the first or second week in August. These points going up and down just show the number of flies that were taken on given dates, and there is a very definite correlation between the proportion of flies that emerge on any given day with the temperature or moisture condition. Some years, when you have very hot, dry weather, there is considerable mortality of these flies as they just do not seem to be able to emerge from the soil, which is a good thing.

(Next slide.) This photograph is one that I wasn't sure I was going to get back in time for the meeting, but it is a Kodachrome of a pair of flies mating on an English walnut. This happened to occur on some of our own trees at the station, so that we are not immune from attack by this bug.

(Next slide.) That is a close-up of an egg puncture, just a very tiny little hole in the husk, and once in a while they lay an egg even on the surface. Those eggs are quite small, about a millimeter in length and about two-tenths of a millimeter in width, but the next slide will show you that what they normally do is to put them inside that puncture in groups. They vary quite a bit, but the average number of eggs is about 20 in each puncture. But that doesn't mean you won't have maybe four or five different punctures on a given nut, so you may end up with at least a hundred or more maggots in a shuck.

(Next slide.) And the next picture is a photograph of the same English walnut taken about six or seven days later, showing the young maggots that have just hatched out. What they will do, they will begin boring in, and they will just radiate out in all directions into the shuck. When they have gotten that far along, of course, there is no hope for control.

(Next slide.) This slide is one taken when the maggots were almost mature, showing the type of damage that you get.

(Next slide.) This is the resting stage, or the pupa, the one which spends the winter in the soil and from which the flies emerge in New York, at least in our section, beginning about July 15th and going through up until August 15th.

(Next slide.) The one at the top is normal fruit. I mentioned a while ago that this butternut curculio causes quite a bit of concern and also spoke about its being in terminals. If you look carefully you see a very definite hole here in the husk. That is where the adult punctured the husk. It may have been a feeding puncture first and later an egg was laid inside, and then you get the maggot or the grub of the curculio developing in there, so that superficially that discoloration looks very much like the walnut husk maggot. But in this case you may not find over one or two maggots in a nut. And the other difference is that these fruits which are attacked usually fall during July and August, whereas the ones that have maggots in, many of them stick right on the trees and don't come off at all.

(Next slide.) I have two or three slides just showing the variations in the degree of injury on English walnuts from the point where you'd have an egg puncture. The puncture was made on the other side of the nut, on top here, and this is just the exudate running down around the nut which dries and becomes black. But these walnuts up above show just a lot of dark spots where the maggots are beginning to find their way through the husk. I have with me some injured nuts similar to those shown on the screen if you'd like to see them when I have finished my talk. They will give you a little idea what maggot injury looks like.

(Next slide.) This is the same type of injury on butternut. Maybe you'd have one egg puncture and as many as a hundred or 120 maggots inside the shuck.

(Next slide.) This is a picture of maggot injury on black walnut. They don't seem to like the black walnuts as well as they do the Persian walnut and butternut.

(Next slide.) This is one of the hybrid English walnuts that is located on the grounds at the Geneva Experiment Station. It's quite a large tree. I don't know the name of it. Maybe you do, George.

MR. SLATE: It has no name.

DR. GAMBRELL: It's not very fruitful, anyway, is it? But it is also susceptible to injury.

(Next slide.) This photograph was made quite a few years ago, and that explains some of the lines around it, but at any rate, this pile of nuts shows the damaged ones that came from one tree, and also the ones that were not infested. In other words, about two-thirds of the nuts on that particular tree had been infested with maggots.

(Next slide.) That's a close-up view and is the type of thing I was trying to describe to you earlier where the shucks dry up and stick to the nut so that you cannot remove them. Those on the left, of course, would be absolutely no good for commercial purposes.

(Next slide.) Now, I suppose you are all interested in this matter of control. Unfortunately, I must admit that I have not worked on the walnut husk maggots very much in the last 15 or 20 years. You may recall that we had a severe freeze back in 1933 or 1934, which took out quite a lot of our Persian walnuts in Western New York, and only the hardier trees remained. But prior to that time we had been getting numerous complaints, from growers about injury from walnut husk maggots, and we did some work at that time and also worked with the Farm Bureau people in the counties where walnuts were grown fairly commonly. In many cases these Persian walnuts were grown on fruit farms where they also have apples and other fruits. So that in those cases it was not a difficult problem to obtain control. We worked out a program whereby, say, beginning about July the 20th to the 25th, at which time quite a few of the flies would have emerged, if the orchardist, when he was going through with his regular spray operation on his fruit trees, would give his walnuts at least two applications at about two weeks intervals, he'd cease to have a maggot problem. That pretty well solved it, as far as they were concerned. But there were also these other plantings where you'd have just a few trees, or possibly one tree in a back yard, something of that sort, which is a little bit more difficult to control.

Dr. Glasgow and I found that on cherry maggot in the city, while a material like lead arsenate is very effective in a commercial orchard, it's very ineffective for just one little tree in your own back yard, providing your neighbors have some trees and they don't spray them. The reason is very obvious: the flies don't necessarily stay on the same tree. They visit around from tree to tree, they feed on the surface of the leaves or fruit. Therefore, it's possible for them to be over on someone else's unsprayed tree and still come over and lay eggs in the nuts of a sprayed walnut tree before being killed. So you can see that such activity may create somewhat of a problem.

At any rate, the lead arsenate spray of three pounds to a hundred gallons, with or without fungicides, has given good control in the past. That No. 3 combination of lime sulphur and lead arsenate was used west of Rochester here around Hilton where this grower had a commercial fruit planting, but he also had a number of English walnuts. The year prior to the time these trees were sprayed he had about 40 per cent of the nuts infested, and the year these were sprayed the infestation dropped they came down to about one percent. Notice the comment at the foot of the table which states that the trees that were not treated the following year went back up to 20 per cent of the nuts infested. There were about 20 per cent of the trees that had infestation. Of course, the flies moved around enough that the trees became reinfested. It simply brings out the point that unless you have a pretty good-sized planting, you are going to have to spray pretty thoroughly in order to get control, and also, if you only have one or two trees and you have a lot of surrounding shrubbery and a lot of trees, it would be very wise to also spray those, unless they are plums or peaches, which are quite susceptible to arsenical injury. But most things would stand the arsenate of lead, and it would be very desirable, wherever you can, to spray surrounding trees and shrubs close to the walnuts themselves, and in so doing you would get pretty effective control. It is quite possible to use this control method and obtain over 80 per cent reduction in infestation.

I am sorry to say I don't have any information on these newer materials, like DDT, methoxychlor and parathion. You have probably read about all of those in the magazines. Some of the men in our department have done quite a bit of work with these insecticides on the apple maggot in the Hudson Valley and in Western New York and they find, as I mentioned earlier, while it's possible to obtain control of apple maggot, say, with DDT, it requires much more frequent application. In that case, if any of you are orchardists or follow the apple-growing insect problems at all, the first application of the walnut maggot spray should go on at about the time the last cover spray for the coddling moth goes on for the first brood. That sounds a little involved, but from the calendar point of view it would be about July 25th in Central or Western New York. Normally, with us here the cherries are being harvested by about July 15th, sometimes a little earlier, but at any rate, that's the time the flies usually begin to emerge.

We have what we call a pre-oviposition period of about two weeks, during which time the flies are not laying any eggs in the shucks and are moving around feeding. Of course, that is the time you have to get this spray material on, before they have punctured the nuts and deposited eggs inside.

I think, unless there are questions, that's all I have to say.

A MEMBER: You recommend No. 3 to be used?

DR. GAMBRELL: Lead arsenate at 3 lbs./100 gallons and 2 gal. of lime sulphur would be an effective insecticide-fungicide mixture. I have used both the wettable sulphur and lime sulphur, as shown here, without any injury to foliage. Sometimes, as you know, if it's real hot, like today, sulphur could cause you a lot of foliage injury. Dr. MacDaniels will certainly bear me out on that.

PRESIDENT BEST: Now I think Joe McDaniel has a little idea here he wants to introduce at this time.

DR. MACDANIEL: I have been talking with Mr. Devitt. He is interested in following up these Carpathian trees in Ontario and is willing to act as our agent in securing seed nuts from some of the better selected trees. As I understand it, this Association couldn't properly act as a sales agency for them, but I believe there are some of the members who would like to get these superior seed nuts of Ontario, and I would be willing to take the names of persons who are interested in them, either for their personal planting or for resale. Mr. Devitt thinks he can secure the nuts at about 60 cents a pound from the owners who have these good trees and deliver them to the United States at around a dollar a pound. Anyone who is interested in that, see me or Spencer Chase during the remainder of the meeting.

Panel Discussion: The Persian Walnut Situation

Moderator: S. B. CHASE; Panel Members: H. L. CRANE, GILBERT BECKER, J. C. MCDANIEL, H. F. STOKE.

MR. CHASE: To introduce the subject, Lynn Tuttle sent a paper, and in addition he sent a few slides. We won't give the paper, but we are going to run through a few slides very hurriedly, because he took the trouble to send them. I am going to read the captions off very quickly. (A series of slides of Persian Walnut were shown).

The moderator isn't going to do anything other than ask for any questions that you folks have on Carpathians at this time. I am going to ask Dr. Crane to comment on this question: Are we going overboard building up our varieties as we know them now? In other words, we have selected four or five varieties that won a contest and our judges selected them as best, and these are the only ones we are hearing about.

DR. CRANE: Mr. Moderator, I don't believe we are, provided that we maintain high standards in the varieties distributed and tested. I feel that when we select a variety we should select it because it is a good nut, not that it's a world beater, for big size and thick, rough, rugged shell that is not sealed, and which is of no value for human use or consumption, excepting for firewood or fuel. Those big nuts won't fill. The best nuts are of reasonably large size, well filled with a well sealed shell and with a kernel that is sweet. Don't figure on selling nuts that have bitter kernels to anybody else. We have nut varieties of the Carpathians that are not going to go over because of the faults that I have mentioned. I should say, too, that we do not know how widely a variety is going to be adapted to different climates. If we select rigidly for good, outstanding varieties that bear good nuts and good, vigorous trees, we won't get too many.

MR. CHASE: That was one point I wanted brought out, that we are now just in the preliminary stage of this Carpathian variety selection business. Of the selections made some have been made by default, because there weren't enough of other samples to compete with. On the other hand, the several we have we all consider outstanding in some respect, or other, and are of value as a beginning provided we bear in mind that we haven't scratched the surface on Carpathian walnuts yet.

MR. STOKE: And let's not confine ourselves to Carpathian walnuts, because Hanson is not Carpathian walnut, and that's an excellent nut.

MR. CHASE: Mr. Stoke, what is going to be NNGA's policy in trying to give recommendations for the planting of Carpathian or Persian walnuts? In other words, does it make any real difference whether it's a Carpathian or whether it is not, as long as it has proved hardy and of good quality?

MR. STOKE: We are dealing with Persian walnuts, and Carpathian happens to be one class of Persian, and Broadview happens to be a Persian that came from Russia, and Lancaster is one that came from somewhere in Europe and landed up in Lancaster, Pennsylvania. I would emphasize the name Persian as the over all name. The Carpathian is merely a Persian walnut which has been brought from the Carpathian mountains of Poland.

MR. BECKER: Last summer a group of nut growers went to Lee Sommers', which is in the central part of Michigan. In the invitation to our nut growers I said, "This is the only pure Carpathian orchard we know in Michigan." That didn't set well with some of them and they took issue with me. In answering this issue, I said that Mr. Sommers had planted Carpathian Persian walnut seed that came from Poland direct. Many of us have a mixture. Even Mr. Shessler has the Hanson and Jacobs and a number of others. If he sells you seed, you are going to get it mixed. In a few years we will have a job keeping pure Carpathian.

DR. MACDANIELS: Isn't it a matter of straight terminology? Juglans Regia is the Persian walnut. Carpathians are a regional strain of Juglans Regia.

MR. CHASE: I think we all understand that.

MR. MACHOVINA: Can we speak of a Carpathian strain. Crath himself said there were many. He even found walnuts growing in clusters like grapes.

DR. MACDANIELS: It would be a regional group of clones with a certain origin not a strain in the genetic sense.

MR. STOKE: They are just Persian walnuts that happened to come from the
Carpathian region.

DR. CRANE: There is a little difference. I believe that in the northern countries we have had more or less inbreeding and we could consider them more nearly a line, not a strain, because of that. When the original seed was introduced by Reverend Crath, probably each one of those lots of nuts come from different trees, as a line, but, now this second generation stuff that's coming along, it's just Juglans Regia. It's a hardy Persian walnut.

MR. STOKE: I think I can offer a word of explanation of those growing in clusters. I have no doubt that when the barbarians swept over the wall centuries ago they brought Asiatic walnuts with them from as far as Manchuria. They grew in clusters there like butternuts and heartnuts. No doubt some of them reached Europe, and some of them may have hybridized with the Persian, and I think really that's the answer.

DR. MACDANIELS: The same situation existed with peaches 20 years ago. We had five geographical races of peaches that were more or less distinct. With the exception of one, the Peento, they have all lost their identity now because there has been no attempt to keep them distinct.

DR. CRANE: That's right.

MR. CHASE: Then we end up, there is no such thing as a Carpathian, it's just a name for a hardy walnut that came from a certain region, that distinguishes it from others.

MR. KEPLINGER: In my parents' old home in Eastern Germany in the Bohemian mountains there is an English walnut tree that's 300 years old and bears a hundred bushels of walnuts a year. They stand 40 below zero there, too, and the nut cracks and hulls well. It has a record on standing the cold, but there hasn't been any of them brought out here and planted in this country, but they are there. I know they are there, because they are on our estate.

DR. CRANE: Mr. Moderator, there is one remark that I want to make. Here we are, the Northern Nut Growers Association, and yet we still use the term, "English walnut," when we are talking about Carpathian walnut and Persian walnut. This "English walnut" is the worst form of terminology that can be used. England doesn't have any walnuts; they have never grown any Persian walnuts or English walnuts, they haven't in the past and they aren't today. They have a few trees but are in the same fix that we are in the Northern Nut Growers Association; they are trying to find a variety of Persian walnut that they can grow in England, and yet here we call them English walnuts. They should be Persian walnuts, or Chinese walnuts. We don't know where they came from. The best authorities seem to think that they originated in Persia; others think they originated in China, but the abundance of evidence is on Persia.

We want to get this thing kind of straight. They are all the same thing, Juglans Regia.

MR. CLARKE: I'd like to make a suggestion. I don't know as you have any authority or power to change, but the term Juglans Regia means "royal walnut." Why not work for the adoption of a name like that, and it will include all of them.

DR. MACDANIEL: That's what they call them in France. This country has a little complication; there is another Royal walnut, one of the hybrids between the California black and the Eastern black.

DR. GRAVATT:-While we are talking about bringing English walnuts, Persian walnuts, whatever you want to call them, from Europe, I want to give a warning about a disease that is killing thousands of trees in Southern France. Just recently I saw quite a few of them in France and the edge of Italy. I don't know whether it's virus or what it is, but it is certainly killing out the English walnuts there at a very rapid rate, and I advise very strongly against introducing walnut seed, scions and such, from those areas in France and Switzerland or other areas in southern Europe where this disease is prevalent. We will know more later about it, because quite a team of pathologists is working on it in Europe.

MR. CHASE: Has anybody else got any comments about Juglans Regia? I am afraid to say anything else.

DR. MACDANIEL: I will say that this Carpathian strain, of Juglans Regia is the first walnut of the Persian type that we have had for Illinois. The Pomeroy, other Eastern strains and California varieties have not survived very long in the climate of the state of Illinois. We do know now that some of the Carpathian seedlings have been fruiting for 10 or 12 years and do show considerable promise there. I don't know whether it will ever develop into a commercial industry but they are worth growing.

MR. CHASE: Thank you. I'd like to ask George Slate what he knows about the Northern Star Persian walnut. Very hardy, and so forth? I think maybe the members might be interested in that.

MR. SLATE: Spencer asked me to find out about the North Star Juglans Regia, which was advertised in the Flower Grower. I called up the local nursery that was selling them, and they said they got their seeds from some Pomeroy trees in the western part of the state. I guess they are just Juglans Regia.

MR. STOKE: Down in Virginia we have Virginia Thin Shell purchased sometimes one place and sometimes another.

MR. CHASE: The secretary's office had an inquiry from the executive secretary of the American Nurserymen's Association wanting to know if those claims could be substantiated. I couldn't say on the basis of what information I had, and I so told him. Apparently they, through their organization, have stopped further advertising of that strain under the claims that they made for it.

MR. KORN: We find our public at large, not only our members, seem to be fascinated by the fact that the Persian walnut can be grown in this latitude. So in speaking to them about it, when I am speaking to our members, I try to say Persian walnut, but when speaking to the public at large, they don't know what I am talking about so I come out flatly and say English walnut. I tell them that we can't expect to grow the California type, but we have a hardier type coming from the Carpathian mountains or Germany or Russia or Holland, that can be grown successfully in this part of the country.

MR. CHASE: I think that's the only approach you can use.

MR. KORN: That's the one I use, and I think it quickly helps people to understand what you are talking about, and doesn't get them confused. If you talked to them about Persian walnuts, they wouldn't know what you were talking about, but if you say English walnuts, immediately they understand, or should, at least.

MR. CHASE: I believe Dr. Crane meant that in our inner sanctum he would prefer Juglans Regia.

DR. CRANE: I would like to ask if there are any growers here who have propagated the Persian walnut on Eastern black walnut, that is, experienced any trouble with graft union failure on them.

MR. STOKE: I haven't.

DR. MACDANIEL: Mr. Oakes?

MR. OAKES: I haven't.

MR. CHASE: No graft union failure on Regia and Nigra.

MR. STOKE: And my experience is they come in much quicker than on their own roots as seedlings.

DR. CRANE: How old are your oldest grafts?

MR. OAKES: Put on in 1938?

DR. CRANE: That's 15 years.

MR. STOKE: I have them at least 20 years.

MR. BECKER: Mine are twenty.

DR. MACDANIEL: Mr. Moderator, I have in my brief case a translation of the French book on walnut culture, and there is a section on root stocks. This was a publication issued about 1941, and according to that book, Juglans Nigra is the best stock they have for general use in France. They have reported no difficulty on this. A second one they were trying of the American walnuts, with some promise, was Juglans major, the Arizona black walnut.

DR. CRANE: The reason why I asked, as I reported in previous meetings—they are having very serious difficulty in Oregon and in parts of Washington with graft union trouble which is known as "black line." All or practically all of the walnuts in both Oregon and California and also what few are grown in Washington have been propagated on the Northern California black walnut, Juglans Hindsii. No graft union trouble evidence shows up before the tree has been grafted about 8 years, and then such cases are very rare. But after the trees or the grafts attain an age of 15 years or more, graft union failures are numerous. For three years now we have been making surveys in the State of Oregon, and we have surveyed tree by tree, year after year, the same orchards, the same trees, and our observations now go into the thousands, and we find that this black line is a terrifically serious thing. In some orchards 22 per cent of the trees will develop black line in one year's time. So, you see, at that rate it would only take you five or six years with a good bearing orchard until you wouldn't have any.

DR. MACDANIEL: Is that always with the Franquettes?

DR. CRANE: That is not only true with Franquettes but also with other varieties in California, even in Contra Costa County.

MR. STOKE: Where those trees are so grafted, does it tend to overgrow, or just the opposite?

DR. CRANE: No, it appears much like our Crenata-mollissima chestnut graft union failure.

MR. STOKE: Is there a tendency for the top to be more vigorous, to have more growth, or vice versa or is growth uniform?

DR. CRANE: It may be uniform. Depends somewhat on the varieties and the seedlings. There may be some overgrowth or some outgrowth, but there is only one test for it, and that is at the graft union. With an axe or knife and you cut out a strip of bark across the union. It may look absolutely perfect, but if there is a black line developed there that is just like a lead pencil line between the stock and the scion, the tree is on the way out. It's just a matter of time. Ultimately the bark between the stock and scion will split, and you get infolding, just like on the chestnut.

One of the reasons that they have propagated their trees on Northern California black walnut was that they had the idea that the Northern California produced a stronger, more vigorous seedling and that they grew much faster than seedlings of the Persian walnut. And, furthermore, somebody at some time circulated the idea that Northern California walnuts were immune to infection by the mushroom root rot fungus. We have surveyed thousands of trees of Persian on Persian roots, and we have never found a single case of black line developing or graft union failure as long as it's a Persian on Persian, and we find the same percentage of infection from mushroom root rot fungus on Persian as on Northern California black.

MR. CHASE: In other words, we should watch our stocks and perhaps try out some Regia on Regia?

DR. CRANE: That's right.

MR. CHASE: Now, folks, we could talk for a long time, but let me make one request before we close our panel: I would be interested in receiving from any member pictures, good, glossy photographs of the newer Carpathian varieties so that we can perhaps publish them in the newsletter and give some folks an opportunity to see what these nuts look like. Some of the folks who never come to a meeting never see a sample and just read about it. It's much better if we can show them a picture now and then. So if you have some good pictures, or plan to take some good pictures, remember, I'd like to have a copy.