The Department of Agriculture has therefore found itself in the position of seeking answers to numerous questions which have been made in connection with these developing industries. I believe that we have contributed very materially to the knowledge of varieties, particularly as regards their adaptation to different geographic locations. We have also assisted the industries to solve some of their problems of cultivation, particularly of propagation, and also the problems growing out of the maintenance of soil fertility. With a new crop, in a new environment, it is always a problem to know how to manage the soil, and this is one of the leading lines of activity in the field, at the present time. In the Bureau of Plant Industry, two offices, that of Horticulture and Pomology and that of Soil Fertility, are co-operating in the solution of the soil fertility problems in the pecan regions.
Of course, as the industry developed and became established, the natural enemies of the pecan and of the other nut trees asserted themselves, as a result of which there have been set up investigations in the Bureau of Plant Industry to study the life histories of the various fungi that attack pecans; and outside of the Bureau of Plant Industry, the Bureau of Entomology has been devoting time to the study of the control of insect enemies. So that, at the present, the department is so organized that three or four important lines of attack are being made upon problems of these industries. Thus, while at the beginning of the Bureau of Plant Industry, in 1901, there was no single, individual person devoting his time and attention to the problems of nut culture, at present there are quite a group of individuals giving their whole time. I feel we are making progress in the work, and while we may be lagging very much behind what we should like to do, we are assisting as best we can, and are at least keeping in sight of the industry, as it goes forward.
I will not try to go into details about the work we are carrying on, because it is better to tell of what we have accomplished than to tell what we hope to do. We have a man on the Pacific Coast giving his whole time and attention to the study of breeding and of the cultural problems of almonds. Besides this, we have two men giving all of their time to pecans; and during the last year, there has been established near Albany, Georgia, a station devoted to the cultural problems of pecans. One gentleman is continuously on the ground with the work, and two others devote more or less of their time to it.
Now, while these problems connected with the industries are the ones occupying most attention, the workers in the Department of Agriculture have not been unmindful of other native nut-bearing plants, such as the native black walnuts, the hickories and the chestnut up to the time of the very destructive attack of blight. The chestnut, however, has not passed out of our sphere of activity, because at the present time, (and I think you will see tomorrow at the Bell Station, some interesting possibilities in the future of chestnut culture in this country), the Chinese forms, which are much more resistant to blight, bid fair to give us a progeny to make it possible for us also to have a chestnut industry from the horticultural standpoint.
Probably the day of timber supply from our native chestnut is at an end. We hope not, but it looks that way at the present time. The possibilities of growing trees from China, the mollissima, or hybrids of them, bids fair to place the chestnut industry so that we can contend with the blight. We probably will not have immune varieties, but those which are able to live with the blight. That, it seems to me, is a very important consideration, because chestnuts have always been an important nut in our eastern markets, and are important in the European markets as well. While the larger forms of southern Europe will probably not be of value to us here, if we can establish a nut industry with nuts of fair quality, as large as our native sweet chestnuts, based on the Chinese species, the mollissima, then we will be making progress. You may see some of these trees at Bell Station which are eight or ten years old; they are bearing quite abundantly, and some of the chestnuts are really very palatable and of satisfactory size.
In addition to this breeding work with chestnuts, there is under way intensive breeding work with almonds which has for its object the development of those more hardy than those now in cultivation in California. This almond industry, though large, is handicapped because of the late frost injury, and it is desirable to get those which will bloom later and withstand lower temperatures.
The varietal problem with pecans will be ever with us, as long as varieties are found in the wilds and as long as people continue to plant seedlings in different localities. That is one of the subjects that is being given considerable attention.
In addition, the relative productivity of the plants to use as mother plants is an important one. In the work of the Department of Agriculture in connection with citrus fruits, it has been found that the individual bud carries over into its progeny the ability to produce fruit not only of a given type, but also the productivity of the parent to the progeny. A long series of records of the behavior of individual trees have been secured; we are building up a mass of information on which to base selections for better parent trees than any available at the present time. If the pecan behaves like the citrus fruits of California, we will be able in the future to have strains and varieties which will be very much less variable than those at the present time.
The propagation, selection, disease and cultural work covers the field that is handled by the Bureau of Plant Industry. We always like to dream of the future, and we are pleased to have the dreams come true. We must have in mind the possibility of better black walnuts than we have at present; and after the great inroad into the industry made at the time of the War, when the trees were used for timber purposes, there should be a greater effort on the part of the people in the northern districts to propagate black walnuts, not only for nuts but also for timber. The black walnut is a very great asset not only for timber and for ammunition purposes, but for food as well.
The hickory tree is in the same class as the black walnut—it is a valuable timber tree as well as nut tree. No other timber is as valuable for the construction of wheels as hickory, and while the "disc wheel" has served a useful purpose in railroad car construction, it is not likely that it will replace hickory altogether in the construction of wheels of motor vehicles. We are veritably a nation on wheels and we will always be looking for material with which to carry us through the country. As I have said, we are a nation of people on wheels, and if your propaganda did nothing more than to stimulate an increased interest in the production of hickory for timber purposes, it would be accomplishing a great result. But I believe that there are varieties among the hickories which should be to the North what the pecan is to the South. There are those which are very large and those which are thin-shelled, and those of fine flavor; as a food product I think the shellbark is second only to the pecan. And I should hail the day with great interest when there are good, recognized varieties of hickories corresponding with the best varieties of pecans. I believe they will be found and developed.