COMPARATIVE LIFE TABLE STUDIES OF DIAMONDBACK MOTH, Plutella xylostella (Linnaeus) ON CABBAGE
Cabbage, Brssica olaracea var. capilata is one of the most important vegetables of India. It is attacked by a number of insect pests and the diamondback moth (DBM), Plutella xylostella (Linnaeus) (Lepidoptera : Yponomeutidae) inﬂict severe damage to the crop by defoliation causing yields loss up to 44.6 percent (Krishnaiah, I980). Many cabbage growers use IPM-neem seed kernel extract spray, trap crop, etc. The extracts from neem seed and kernel have provided good control of DBM on cabbage (Sannaveerappanavar et al., I997). It is therefore, desirable to develop an integrated pest management (IPM) system, which is less dependent on synthetic insecticides. Ialali et al. (2001), in the choice study for most suitable Trichogrammatoid species to promote as a key component in the IPM for DBM has reported Trichogrammatoidea bactrae Nagaraja as the most important species.
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