Influence of Brevicoryne brassicae L. incidence on the yield of marketable cabbage heads under different insecticide spray regimes in highlands of Himachal Pradesh (India)
Keywords:BC ratio, Cabbage aphid, Endosulfan, Malathion, NSKE, Yield
AbstractStrong and negative correlation was observed between the yield of marketable cabbage heads and populations of/plant infestations by cabbage aphid (Brevicoryne brassicae L.) 14 days after first and second spray. Weak correlation existed between yield of marketable cabbage heads and aphid populations/plant infestations at pre-treatment. Therefore, insecticide sprays should be done to control late aphid infestations and avoided against early aphid infestations.
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