Colonel Sober: No sir, not at all. Haven't yet.
Mr. Reed: So there is an argument that silences me and still it is true that we can't safely plant hickories and pecans without some degree of cultivation. I don't think Professor Smith has planted any on these hills.
Still we all agree with Professor Smith in a way. Something ought to be done to the surface to prevent the land from washing, and there is no better way of doing that than by planting trees. Then the roots will prevent washing and they can take care of themselves better than a surface crop. Especially is this true on the hillsides, so there is a good deal in Professor Smith's argument. And yet there is the danger that those trees will be infected with disease and insects. On plants and trees that are attended to and cultivated we find those pests will be kept in check. So there are two sides to that argument.
Professor Smith: The point I raised was this, that it is possible in some places to attain by fertilization the advantage that comes by cultivation in other places. Great things have been done without fertilization. There are chestnut orchards in Corsica of grafted trees, ranging from the size of my wrist to eighteen to twenty feet in circumference. They have not been fertilized in centuries, and they yield enough to support the entire population.
The President: We would like to hear from Col. Van Duzee, and I want to say that, as President of the National Nut Growers Association, he is well acquainted with these things. I commend him to you and promise that whatever he may have to say to you is worthy of your very careful consideration. I have the honor to belong to the association of which he is the president, and know it is seldom we have an opportunity to hear men like him.
Col. Van Duzee: Gentlemen, I am going to side step this argument for I do not think it worth while taking up the time. We are here for other purposes. Personal experiences are not the general rule because each one's experience differs from that of others. We might all tell our personal experiences and after we were all through we would not have accomplished anything. I want to take you back to the point from which we started this, in order to know what we are talking about. To illustrate what I want to say to you, we can take the root pasture of a tree and analyze it in every possible way so as to bring to bear upon it the best judgment we have from all sources. The tree grown upon a hillside has a root pasture which is entirely different in many ways from the root pasture in the river bottoms. If we have a tree growing on a hillside in a soil that easily transmits moisture and it gives that tree constantly a stream of pure water going through its root system, and there happens to be enough fertility in that vicinity, that moisture is impregnated with plant food, and the tree will get all it wants. You can't speak in the same breath of the tree growing in the river bottoms whose entire root pasture is entirely different. The root pasture may become contaminated by various things which may cause, so to speak, ptomaine poison. Therefore I say that every locality, every soil, every climatic condition, every variety of tree must be taken as individual. What would be good for an apple orchard in Virginia might be fatal to an apple orchard immediately south of Lake Brie in Ohio. The use of commercial fertilizer that would be good in one locality would be bad in another. Therefore I disapprove of this kind of a discussion, because we are not speaking to a definite point. I want to bring your minds to this point, that every individual tree and its locality, and the man that is responsible for its welfare, must be analyzed before you can speak intelligently about what must be done.
I am going to tell you the same story I told the societies at Pharoa, Alabama. They wanted me to talk on this subject and I said, "You remind me of a backwoods character I have come in contact with in the woods of Florida who is ill and doesn't know what is the matter with him. He knows he needs medicine and he goes down to the general store and buys a bottle of patent medicine recommended by the groceryman and he takes it and maybe it helps him and maybe it don't, but if he don't get better he goes and gets advice from some other man like the grocer." I said, "That is the way you are demonstrating fertilizer." The first thing I would advise would be this: to analyze the individual pasture of the individual tree and take everything that enters into the history of that tree and everything that bears upon it. All the accumulated wisdom of others won't help us very much. We have to use common horse sense. We can't talk about these things generally. In poor soil and under bad conditions the pecan tree will do nothing. There are trees I know twenty-six or twenty-seven years old that are not as large as my wrist, that have never borne a nut and never will. I can also show you trees in that immediate vicinity, planted at the same time from the same nuts with favorable conditions, that are seventy or eighty feet high and bearing good crops of nuts. Those nuts came out of the same bag the same day, and were planted by the same man in the same locality, and that proves, as I have said before, that you cannot discuss things of this kind in general terms and it is a waste of the time of the association to do so. I would be glad to answer definite questions as to definite points.
The President. The next will be a talk by Dr. R. T. Morris of New York.
Dr. Morris: Mr. Chairman, and Members of the Association: My subject relates to personal experiences with hybridization work. This is work which is to be done more and more by various members of our association, and we are thus to create new species of trees. Nature's whole endeavor is to preserve the mean type among races of organisms. There are mutants among all trees, among the hickories and walnuts, as well as among the peaches and pears. In fact all species undergo mutation. We select the most desirable mutants and we try to fix a given type by grafting and propagating. Seedlings will go back toward the mean type. The mean type hickory, walnut or chestnut is the type that nature wishes to preserve, but these are not best for man's purposes. What is best in nature's plan is not always best in man's plan. We have got to dynamite nature. We have got to put a charge of dynamite under nature's seat and blow her up, in order to get what we want for our own purposes. How do we do it? How do we break up the mean type of a variety or species? By crossing the flowers and bringing together the parents we wish to unite in the hope of growing new forms, among which will be some that are particularly desirable for our purposes.
Now in doing this work, I have had to get by experience a number of points which will be of value to members of this association. First, in regard to collecting pollen. Sometimes species, which we wish to cross, flower at widely different times. They bloom perhaps two or three or four or even six weeks apart, and it is a question how long we can keep the pollen viable. What can we do about it? There are two good ways. First, get your branches of male flowers before they are open, put them in cold storage, or in an ice house, or in a dark room, and keep them anywhere from one to six weeks dormant. When you want to use them, and your trees of the pistillate flowers are ready, take the branches of staminate flowers out of the ice house and put them in jars of water in a warm room in the sunshine. They will blossom and make good pollen shortly. Another way is through correspondents living at a distance. These correspondents will send you pollen from a species which blossoms later further north or earlier further south, at the time which you wish for your pistillate flowers. For instance, in crossing chinkapins with oaks, the chinkapins will blossom about the 12th of June in Connecticut but most of the oaks are through blossoming by the 12th of May. There we have a month's difference. How can I use oak pollen upon my chinkapin trees? I do this by sending away up to the northern limits of the growth of the oak tree, up in Canada. The red oak tree blossoms there in June, the same species that blossoms with me early in May. Pecan pollen that I wish to use upon shagbarks and walnuts I get from Texas. Now how are we to keep pollen when we have collected it, if we are not ready to use it immediately? I have had pollen sent to me from a distance in tightly corked bottles. It was probably ruined at the end of three or four days, because it could not breathe. Every grain of pollen has to breathe just as surely as a red squirrel in the top of a tree has to breathe. The pollen grain is a living organism, and if it is sent in a closely corked bottle it smothers and dies. You must have it sent in paper or wooden boxes in order to have it in good condition when it arrives, and it must be kept in a cool place, not too dry and not too damp. If it is kept in a place that is too damp, various fungi appear, and begin to attack it at once. If it is too dry, it loses its water content, and its protoplasm does not make combination with that of the other flower. So we must keep our pollen in a cool place, not too dry, not too warm and not too moist, and where it can breathe. We may put it in cold storage but not at a temperature below freezing. We may put it into the cold storage which florists use, and keep it for a long while. Some pollen will keep, viable for three weeks, under these conditions, possibly longer. It is important to keep your pollen boxes open at the top. They must be kept where the wind doesn't blow your pollen from one box to another. I had not been impressed by that point until this year. I had eight different kinds of pollen about the farm house, in different rooms, in order to be sure to keep them far apart. One day on my arrival from town ready for pollenating a number of trees, I found that a very neat housekeeper had found it undesirable to keep such boxes scattered about in so many places. She had put them all neatly together in a closet on one shelf, and there was none of the pollen that I could use, because the wind had mixed the kinds all up. I had eight kinds of pollen across which one kind of wind had blown.