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Insect Management
Rice Insect Management
Aphids

Greenbug - Schizaphis graminum (Rondani) and bird cherry-oat aphid, Rhopalosiphum padi (L.) - Occasional Pests - Crossover Pest From Other Crops From Wheat and Weeds to Rice

Life Cycle as Related to Wheat, Weeds, and Rice

Picture of greenbug.Aphid infestations normally do not begin in rice, rather aphids may be numerous in wheat or adjacent weeds and move into rice. 1996 was the first year greenbugs were reported in rice. Some were found in the years since, but the number of fields infested and the densities in fields has decreased. Bird cherry-oat aphids were first reported in rice in 1997, and have been reported each year since.

Treatment Levels

Rice plants with 1 to 2 leaves have been observed to be killed when 2 or 3 greenbugs fed on the plants. Larger plants can be damaged but more greenbugs are required to cause severe damage or death. Aphids and greenbugs should be treated when the rice stand is threatened and substantial numbers of aphids are present.

 

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Division of Agriculture
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Last Date Modified 10/22/2009
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University of Arkansas • Division of Agriculture
Cooperative Extension Service
2301 South University Avenue
Little Rock, Arkansas 72204 • USA
Phone (501) 671-2000 • Fax (501) 671-2209
 

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