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The spring grain-aphis or so-called "green bug." (Toxoptera graminum Rond.)

by: Webster, F. M. (Francis Marion), 1849-1916; United States. Bureau of Entomology; United States. Dept. of Agriculture

Publication date: 1909

Topics: Greenbug, Aphids Toxoptera, Grain Diseases and pests, Agricultural pests

Publisher: Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology

Collection: usda-circularentomology; usdanationalagriculturallibrary; fedlink; americana; biodiversity

Contributor: U.S. Department of Agriculture, National Agricultural Library

Language: English

Rights: The contributing institution believes that this item is not in copyright.

Volume: ser.2:no.93

Circular No. 93, Revised

"Issued June 23, 1909."

At head of title: United States Department of Agriculture, Bureau of Entomology

Distribution in the United States. pp. 1

The relation of temperature to destructive outbreaks. pp. 3

Food plants. pp. 5

Invasion of 1907. pp. 7

Development and influence of Lysiphlebus tritici. pp. 15

Experiments in destroying "Green bugs" over small areas. pp. 19

Agricultural methods of control. pp. 20

The present "Green bug" situation in the Southern States, May 1, 1909. pp. 21