+Winter Killing 1947-1948+
In 1947 scions of six of these prize winning trees were successfully grafted into established ten year old black walnut seedling trees at the Mahoning County Experiment Farm at Canfield, Ohio, location 41° north latitude. The scions grew nicely in 1947 but all were winter killed during the winter of 1947-1948 with the exception of one scion of Kuhn and one of Davidson. Two scions of Duke, two of Kuhn, one of Athens, one of Orth, seven of Jackson perished during the first winter after grafting. This severe killing of 1947-48 apparently indicates that winter injury to these varieties may be expected some years when they are planted under conditions similar to those at the Mahoning County Experiment Farm. The one scion of the Davidson variety came through in fine shape, so this would be the exception.
The winter of 1947-48 was unusual in the severity of the winter injury to the black walnut trees at the Mahoning County Experiment Farm. Two ten year old Stabler trees and a ten year old Jansen tree killed back to the ground level, and one year old growth of Cowle, Havice, Jansen, Murphy, Mohican, Ohio, Stambaugh, Twin Lakes, and Lisbon was badly damaged although not always completely killed.
+Winter Killing of Bench Grafts+
Bench grafts that were still in the hot bed and were not transplanted to nursery rows until spring of 1948 fared much better than the grafts growing in the established trees. As they had no winter protection but the side walls of the hot bed it is a little hard to see why they fared so much better.
One bench graft of the Duke, two of Burson, four of Kuhn, two of
Davidson, three of Orth, two of Williamson, two of Penn, and six of
Jackson all came through in good shape.
Indications certainly point to the conclusion that the prize winning varieties of the Ohio 1946 contest are adapted to the southern part of the state rather than to the northern part. The Davidson is a possible exception to this.
Mr. Smith: I asked Mr. Silvis why Mr. Sherman wasn't here, and he said he wasn't able to come because he was doing the same type of work this year, and it is very evidently the reason why he wasn't at the last meeting because he was preparing this work. Instead of coming and enjoying the convention, he stays home and does work that helps the Association, so I think the Association is very much indebted to him.
President Davidson: I think that is true.
That makes it possible for us to close in good time. I think this program is tops. I think it is by far the best program I remember.