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Investigations on the economics of control of the cereal aphid (Macrosiphum (Sitobion) avenae (Fabr.)) in winter wheat


Investigations on the economics of control of the cereal aphid (Macrosiphum (Sitobion) avenae (Fabr.)) in winter wheat



Nachrichtenblatt fur den Pflanzenschutz in der DDR 42(2): 24-27



Large-scale trials on the control of Sitobion avenae on winter wheat in the German Democratic Republic in 1986 showed that an extra yield of 4.0-8.4% could be achieved if chemical control measures were undertaken when infestation was 12-15 aphids/ear. The cost-covering yield from spraying with insecticide averaged 0.14 t/ha, and the cost-free extra yield for manual harvesting averaged 0.39 t/ha. Results from combine harvesting were not statistically significant.

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