Northern Nut Growers Association Report of the Proceedings at the Second Annual Meeting / Ithaca, New York, December 14 and 15, 1911

by Unknown

CAUSE.

While there are several and sometimes complicated causes of the death of the trees, investigations by experts of the Bureau of Entomology, U. S. Department of Agriculture, have revealed the fact that the hickory barkbeetle is by far the most destructive insect enemy and is therefore, in the majority of cases, the primary cause of the dying of the trees.