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Research Project: Management of Aphids Attacking Cereals

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Title: Small grain aphids in Oklahoma and their management

Author
item ROYER, TOM - Oklahoma State University
item GILES, KRIS - Oklahoma State University
item Elliott, Norman - Norm
item ZARROBI, ALI - Oklahoma State University

Submitted to: Oklahoma Agriculture Experiment Station Departmental Publication
Publication Type: Experiment Station
Publication Acceptance Date: 11/20/2020
Publication Date: 11/20/2020
Citation: 2020. Small grain aphids in Oklahoma and their management. Oklahoma Agriculture Experiment Station Departmental Publication. EPP, 7099, 1-8.

Interpretive Summary: Aphids are the most important insect pests of small grains in Oklahoma. Present from crop emergence through grain fill, the changeable climate in Oklahoma makes it difficult to predict when they will cause damage. Aphids affect grain yield directly and indirectly. The greenbug and the Russian wheat aphid possess toxins they inject into the plant while feeding, which cause visible damage symptoms. The bird-cherry oat aphid, the rice root aphid, the English grain aphid and the corn leaf aphid do not cause visible injury as they feed, but remove vital plant fluids the plant needs to develop. Several of these cereal aphids are vectors of plant viruses such as the one that causes barley yellow dwarf disease (BYDV). This fact sheet describes, identification, biology, biological control, and chemical management of these important small grain pests.

Technical Abstract: Aphids are the most important insect pests of small grains in Oklahoma. Present from crop emergence through grain fill, the changeable climate in Oklahoma makes it difficult to predict when they will cause damage. Aphids affect grain yield directly and indirectly. The greenbug and the Russian wheat aphid possess toxins they inject into the plant while feeding, which cause visible damage symptoms. The bird-cherry oat aphid, the rice root aphid, the English grain aphid and the corn leaf aphid do not cause visible injury as they feed, but remove vital plant fluids the plant needs to develop. Several of these cereal aphids are vectors of plant viruses such as the one that causes barley yellow dwarf disease (BYDV). This fact sheet describes, identification, biology, and management of these important small grain pests.