As no control experiments are known, recommendations are based on general knowledge of sanitation. If an owner has only a few valuable planted trees, he should cut off the diseased parts a foot or more back from the lower edge of the affected bark and burn or bury them in the soil. If he has many trees scattered over extensive pasture areas, it is questionable whether any action other than elimination of the more susceptible trees is justified. We will be interested in the results obtained from control work.
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President Davidson: Now I will turn over the chairmanship of the meeting to Mr. Chase, who will have charge of the Round Table Discussion.
Round Table Discussion on Chestnut Problems
SPENCER B. CHASE, Presiding
Panel of Experts: Max E. Hardy, Carroll D. Bush, H. F. Stoke, G. F. Gravatt, J. C. McDaniel.
Mr. Chase: Gentlemen, in the last hour and a half we have heard perhaps more about chestnuts from qualified specialists than we will ever hear in any meeting of ours, and we requested each one to withhold questions until this point. So now we will have some questions from the floor, please.
Mr. Slate: What is the present status of breeding chestnut species for timber purposes?
Mr. Gravatt: The prospects are coming along. We have one cross between a none-too-promising Chinese chestnut and an American chestnut, with a good bunch of hybrids and they are different from other hybrids. It looks like they will stand up against blight. They will have blight canker growth from 10 feet down to the ground but it doesn't go into the cambium region. It is too early to evaluate the hybrids, but they do have the upright form and rapid growth of the American chestnut.
Now when we take these first-generation hybrids, cross them back with the Chinese and get more resistance, as we have done so many times in the past, we lose that rapid and more upright growth habit of the American chestnut. But we have a lot more work to do before we are ready to say anything final on this question.