The poor success with the heartnuts is quite in line with previous attempts at propagating this species by grafting. Results shown here with the butternut are deemed reasonably satisfactory, in view of the well known difficulty of grafting this species. It should be noted here that, in the case of every graft that took and grew, it was the small buds that were successful, not the large ones. The total lack of success with the Persian walnut is inexplicable to the writer, but he knows of no previous attempts to graft Persian walnut on Persian walnut root.
Black walnuts show a very high percentage of catches, in the case of the Thomas and Ten Eyck varieties 100%, but in the case of the Stabler this is reduced to 51.2%. I would say in this connection that neither of my two Stabler trees are vigorous growers, and so the trees grafted with scions from these are really cases where we have not been using scions from vigorous growing trees, and we know that this does not give a high percentage of catches.
The proper species to be used as a stock for the various varieties of hickories has not been shown conclusively for the number of grafts of each kind set was too few to be conclusive, and these experiments should be repeated. In the case of most of these varieties where results are poor, it was particularly noted when the grafts were set that the scions were in poor condition, a number of scions being thrown away because the cambium layer was dead. It is to be hoped that a species will be found to which will be well adapted the Vest hickory, which the writer regards, everything considered, as the best hickory that we have. Seemingly the pecan is the stock that gets the greatest number of catches; but the difficulty the writer has had in making Vest hickories on pecan root live, leads him to question as to whether another stock might not prove better. Another thing disappointing so far is in the seeming poorness of the mockernut as a stock. Over quite a large section of the United States the mockernut is the prevailing hickory, and in that section the mockernut will be most generally available for top working; moreover it will grow well in sandy soils where the shagbark is not found. In Petersburg, Va., the writer has seen it seemingly outgrow the black walnut.
The adaptability of the Barnes hickory on all stocks is notable, for it is the only one of the 10 fine hickories tested in the 1919 contest, of which this is true. If these grafts continue to flourish, and especially if future experiments check the results this year, the Barnes will have a peculiar value for top working. It is one of our best hickories, and, apparently is our surest variety for top working.
MR. CLOSE: I would suggest that we extend our thanks to the Smithsonian
Institute for the use of this room for the meeting.
THE PRESIDENT: Will you vote for that? (Motion voted upon favorably). I believe then, that brings to a close the Fourteenth Annual Convention, to meet in New York for the Fifteenth Convention in 1924, on September 3,4 and 5.
This meeting is now adjourned.
Time—2:30 p. m.
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Notes of this convention by Mrs. B. W. Gahn, U. S. Dept. of Agr.,
Washington, D. C.