NALDC

Main content area

The green-bug or spring grain-aphis : how to prevent its periodical outbreaks


Author:
Walton, William Randolph,
Source:
Farmers' bulletin (United States. Department of Agriculture) ; no. 1217 1921
Year:
1921
Subject:
life history, parasitoids, grain crops, Lysiphlebus testaceipes, Schizaphis graminum, biological control agents, grains, natural enemies, Greenbug -- Control, and Grain -- Diseases and pests
Language:
English
Publisher:
U.S. Dept. of Agriculture
Collection:
Organic Roots Collection