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Different pattern of cereal aphid population dynamics in northern (Hannover-Gottingen) and southern areas of West Germany

Different pattern of cereal aphid population dynamics in northern (Hannover-Gottingen) and southern areas of West Germany

Bulletin SROP 14(4): 1-12

This paper was presented at a meeting of the IOBC/WPRS working group "Integrated control in cereal crops", held 21-22 March 1990 in Gottingen. Studies in different regions of West Germany showed that the variability in cereal aphid (mainly Sitobion avenae and Metopolophium dirhodum) populations decreased when regions were considered separately, indicating that more regional forecasts would improve the West German threshold model.

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