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The corn leaf-aphis and corn root-aphis / F. M. Webster

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

Publication date: 1907

Topics: Corn root-aphis, Corn Diseases and pests, Aphids Aphis, 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.86

Circular No. 86

"Issued May 6, 1907."

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

The corn leaf-aphis. pp. 1

Appearance and habits. pp. 2

Field experiences. pp. 3

The corn-root aphis. pp. 4

Description -- The root-aphis and lttle brown ant -- Life history and habits of the root-aphis. pp. 5

Winged females of the root-aphis. pp. 7

Influences likely to produce females -- The ant's care for eggs and young of the root-aphis. pp. 8

Natural enemies of the root-aphis -- Preventive and remedial measures -- Crop rotation. pp. 9

Stirring the soil after plowing and before cultivating the crop -- Late fall or winter plowing. pp. 10

The use of barnyard manure. pp. 11

Experiments in driving the ants from the roots of corn in the field -- Treating the seed before planting. pp. 12