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Field population trends of cereal aphids and their natural enemies on corn plants in Upper Egypt



Field population trends of cereal aphids and their natural enemies on corn plants in Upper Egypt



Assiut Journal of Agricultural Sciences 22(4): 33-42



Infestation of maize in Upper Egypt with Schizaphis graminum and Rhopalosiphum maidis in 1988 and 1989 occurred at the beginning of August, and the aphids reached their maximum abundance (406 and 518/plant) in the 4th week of August, when the plants were in their reproductive stage. Aphid populations began to decrease from the 3rd week of September, to reach their lowest levels in mid-October, when the plants were mature.

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Accession: 002382996

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