2. Institutional Publications
Permanent URI for this communityhttp://localhost:4000/handle/123456789/96
Browse
13 results
Search Results
Item Persistence of some systemic insecticides in cowpea when applied as granules in different soil types of Kerala(Kerala Agricultural University, 1975) Das, N M; Dale, D; Sasidharan Pillai, KA pot trial was conducted to study the persistent toxicity of phorate, car. bofuran, mephosfolan and disulfoton to the pea aphid, Aphis craccivota on cowpea grown in sandy, laterite, red, forest and black soils treated with the above insecticides as granule. The persistent toxicity was highest in plants treated with disulfoton in all types of soils. Mephosfolan was next best in sandy, red and forest soils whereas carbofuran was next to disulfoton in laterite and black soils. The yields obtained from treated plants were significantly higher than those of corresponding controls. But there was no direct correlation between the persistent toxicity of insecticides and the yield. The yield factor appears to be influenced by the impact of the insecticide on some soil factors favouring plant growth.Item On the use of neem seed kernel powder as a protectant for storid paddy(Kerala Agricultural University, 1977) Saradamma, K; Dale, D; Nair, M R G KItem Evaluation of some antifeedants against larvae of Papilio demoleus Linn. (Papilioimidae: Lepidoptera) and Plusia peponis F (Noctuidae:Lepidoptera)(Kerala Agricultural University, 1980) Saraswathi Ammal, L; Dale, DThe antifeedant action of fentin acetate, fentin chloride anJ AC-24055 was evaluated on the caterpillars of Papilla demoleus and Plusia peponis, Fentin chloride ranked first both in the antifeedant action and field persistence on plants, followed by fentin acetate and AC-24055 for both P. demoleus and P. peponis, The slight phytotoxicity on citrus and snakegourd did in no way affect the vigour of the crops.Item Food preference of the rice meal moth Corcyra Cephalonica Stainton (Lepidoptera : Pyralidae)(Kerala Agricultural University, 1981) Ambika, B; Abraham, C C; Dale, DItem Influence of food plants on the consumption of folfage and pupal characters of Pericallia Ricini Fab. (Arctiidae: Lepidoptera)(Kerala Agricultural University, 1985) Ranjith, A M; Dale, DThe influence of different food plants on the growth of the arctiid caterpillar Pericallia ricini is discussed. DJe to differences in the quality of the nutrients and the nutrient balance in the different food plants, the pupal periods of caterpillars feeding on the varied food plants differed significantly. The pupal weights and the mortality of larvae and pupae differed batween the insects feeding on the different food plants. An increased consumption of food by larvae of the later instars and by females than males was also observed.Item Clovia bipunctata kirby (cercopidae : hemiptera) as a pest of lemongrass(Kerala Agricultural University, 1983) Saradamma, K; Dale, DItem Evaluation of three antifeedants against caterpillars of Spodoptera litura Boisd and Achoea janata Linn(Kerala Agricultural University, 1974) Saraswathi Ammal, L; Dale, DItem Laboratory evaluation of three antifeedants against the grubs of Epilachna vigintioctopunctata(Kerala Agricultural University, 1973) Dale, D; Saradamma, KItem Chemical 'control of the red spider mite, Tetranychus telarius L. (Tetranychidae)(Kerala Agricultural University, 1972) Saradamma, K; Dale, D; Das, N MItem Studies on the consumption, digestion and utilisation of food plants by the larvae of Euproctis fraterna M. (Lymantridae: lepidoptera)(Kerala Agricultural University, 1971) Dale, D; Chandrika, S