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Biological and economic effectiveness of aphidophagous enemies of the green cabbage aphid (Brevicoryne brassicae L.)


, : Biological and economic effectiveness of aphidophagous enemies of the green cabbage aphid (Brevicoryne brassicae L.). Rastitelnozashchitna Nauka (4): 82-91

Brevicoryne brassicae (L.) is a permanent pest of cabbage and similar crops in Bulgaria and is parasitised there by various species of Hymenoptera. Investigations in 1970-74 showed that the most important of these was Diaeretiella rapae (M'Intosh.). Insect predators of several families, including syrphids (especially Sphaerophoria scripta (L.), Episyrphus balteatus (Deg.) (Syrphus balteatus) and Scaeva pyrastri (L.)) and coccinellids, were also important.

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