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Permanent URI for this collectionhttp://localhost:4000/handle/123456789/1975

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Author: search.filters.author.Susamma MathaiSubject: search.filters.subject.fenitrothion

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    On the control of the jassid Amrasca Biguttula biguttula (Ishida) on bhindi using some new insecticides
    (Kerala Agricultural University, 1976) Nair, M R O K; Christudas, S P; Susamma Mathai
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    Control of the insect pests affecting cowpea Vigna Sinensis
    (Kerala Agricultural University, 1977) Das, N M; Susamma Mathai; Christudas, S P
    In a field experiment conducted in the red soil of Agricultural College Farm, Vellayani applying thimet, disulfotan, rnephosfolan and carbofuron granules at three different levels, applied at the' time of sowing, disulfoton at 1 kgai/ha was found an effective and economic method for controlling pea aphid upto 5 weeks after sowing. In another field experiment it was observed that spraying of different insecticides commencing from the time of flowering along with one application of disulfotan granules at the rate of 1 kg ai/ha at the time of sowing reduced the incidence of pea aphid and pod borers and increased the yield significantly. On a benefit cost ratio basis the effective insecticides could be ranked as follows: f enithion >f enitrothion > monocrotophos > carbaryl > phosalone > quinalphos.