The role of polyphagous predators in the control of cereal aphids.

Abstract

Polyphagous predators may be important in controlling cereal aphid populations  and many of these predators overwinter in hedgerows. Hedge removal could therefore have important repercussions on the frequency of cereal aphid outbreaks. In this study the information over-wintering surveys of polyphagous predators and their dispersal to cereal crops in the spring were used as a basis for a simulation study to investigate their effect on cereal aphid population growth.