1980•Nachrichtenblatt fur den Pflanzenschutz in der DDRRequires access
The effect of combined occurrence of the cereal aphid (Macrosiphum avenae (Fabr.)) and the cereal leaf beetle (Oulema melanopus (L.)) on the yield of winter wheat and the determination of control thresholds.
B. Reinsch, Theo Wetzel, Bernd Freier
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Abstract
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