NALDC

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

Author:

Walton, William Randolph

Source:

USDA

Year:

1921

Subject:

Greenbug, Control, Grain, Diseases and pests, life history, parasitoids, grain crops, Lysiphlebus testaceipes, Schizaphis graminum, biological control agents, grains, and natural enemies

Language:

English

Publisher:

U.S. Dept. of Agriculture

Series:

Farmers' bulletin (United States. Department of Agriculture) ; no. 1217

Collection:

Organic Roots Collection

Permanent URL:

http://handle.nal.usda.gov/10113/33485