Browsing by Author "Nair, M R G K"
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Item Acceptance and relative intake of different foods by two species of rats (Rattus rattus Linn. and Bandigota Bengalensis gray) in Kerala(Kerala Agricultural University, 1978) Pillai, K S; Nair, M R G KItem Acrocercops zygonoma meyrick as a pest of Mango in Kerala(Kerala Agricultural University, Vellanikara, 1968) Remamony, K S; Das, N M; Nair, M R G KItem Bioassay of insecticide residues on crops-I Persistence of endrin residues on paddy(Kerala Agricultural University, Vellanikara, 1969) Asaf Ali, K; Das, N M; Nair, M R G KItem Biology of the lace-wing Corythauma ayyari drake a pest of jasmine(Kerala Agricultural University, 1974) Radhakrishnan Nair, C P; Nair, M R G KBiology of Corythauma ayyari (Tingidae : Hemiptera) a lacewing on jasmins is described with mention of the damage caused.Item Control of brinjal pests using deterrents(Kerala Agricultural University, 1972) Rajan Asaril, P A; Nair, M R G KItem Control of Erosomyia indica grover a new pest of mango in Kerala(Kerala Agricultural University, 1970) Chandrtka, S; Nair, M R G KItem Deterioration of insecticides on glass and on leaf surface(Kerala Agricultural University, 1972) George Koshy; Das, N M; Nair, M R G KItem Effect of food, growth and body lipid contents on the susceptibility of tribolium castaneum herbst to toxicity of insecticides(Kerala Agricultural University, 1975) Visalakshy, A; Nair, M R G KThe growth index and weight of Tribolium castaneum were the highest when reared on wheat 4- 5% yeast followed in the descending order by those of insects reared on groundnut oil cake, gingelly oil cake, wheat and coconut oil cake. There was no correlation between the LD 50 values of parathion and endrin on the adults T castaneum on the one hand and the growth index and weight of the insects on (he other. There was positive correlation between the LD 50 values of parathion and the body lipid contents of 7\ castaneum while there was no such correlations in the case of endrin.Item Effect of granular insecticides on nodulation, rhizosphere microflora and growth characteristics of cowpea(Kerala Agricultural University, 1978) Visalakshy, A; Santhakumari, K; George Koshy; Nair, M R G KStudies conducted to assess the effect of ten insecticide granules on nodulation, rhizosphere microflora and growth characteristics of cowpea showed that carbofuran, carbaryl and quinalphos increased the nodules significantly. An increase in size of nodules was also observed by all the insecticides except quinalphos. Carbofuran, carbaryl and chlorodimeiorm increased the plant height. Weight of roots was enhanced by carbofuran and MIPC. The fungal and bacterial population is influenced variously by the different insecticides both in the rhizosphere and non-rhizosphere soil, whereas the actinomycetes population was not affected.Item Effect of nutrition on the susceptibility of Tribolium castaneum herbst to the toxicity of different insecticides(Kerala Agricultural University, 1972) Omana, M M; Das, N M; Nair, M R G KItem Effect of phorate on growth characteristics and nitrogen contents of cowpea plants(Kerala Agricultural University, 1980) Visalakshi, A; Nair, M R G KStudies were made on the effect of phorale applied as granule with seeds treated/untreeted with Rhizobium on growth characterstics and total nitrogen contents of cowpea. In rhizobium treated plants, plant height and root length were significantly increased due to phorate treatment while the other factors such as fresh and dry weights of plants and TNC were increased only at 2 kg ai/ha level. In cowpea plants not treated with Rhizobium the height of the plant and TNC were significantly increased in general by phorate application.Item Effect of phorate on rhizobial nodulation in cowpea(Kerala Agricultural University, 1981) Visalakshi, A; Nair, M R G K; Aiyer, R SStudies were made on the effect of phorate granules applied along withs seeds at the time of sowing on nodulation in cowpea treated with Rhizobium a compared to nodulation in untreated seeds. In Rhizobium treated plants, phorate caused suppression of nodule development and increase In nodular size, fresh weight and dry weight. In plants untreated with Rhizobium, phorate suppressed nodule formation in the roots and stimulated nodule size and fresh wieght.Item Effect of pre-harvest application of insecticides on insect infestation in stored paddy(Kerala Agricultural University, 1973) saradamma, K; Nair, M R G KItem Effect of rice varieties on the extent of leaf consumption by caterpillars of Cnaphalorocis medinalis(Kerala Agricultural University, 1974) Das, N M; Nair, M R G KItem Effect of some green leaves and organic wastes on root-knot nematode infestation on bhindi(Kerala Agricultural University, 1976) Prem Kumar, T; Nair, M R G KIn a field experiment it was found that the green leaves of eupatorium, lemongrass, mango, cashew and calotropis each at 5000 kg/ha and the organic wastes paddy straw, farm yard manure, press mud, coconut husk powder, paddy husk, coconut oil cake, cashew shell powder and saw dust at 2500 kg/ha, when applied in soil 21 days prior to sowing gave effective control of root knot nematode infesting bhindi.Item Effect of some insecticide granules on the control of the banana aphid Pentalonla nigronervosa Coq.(Kerala Agricultural University, 1973) Nair, M R G K; Jose, P C; Reghuxath, P; Gangadharan Nair, NItem Effect of weathering on persistence of insecticide residues on glass surfaces(Kerala Agricultural University, 1981) George Koshy; Das, N M; Nair, M R G KItem Evaluation of the toxicity of O,O-diethyl-thino phosphoric acid O (quinoxalyl (2) ester (sandoz insecticide-6538)to insect pests(Division of entomology ,Agricultural college and research institute ,Vellayani., 1970) Gopinathan Nair, P; Nair, M R G KItem Field and laboratory evaluation of insecticide sprays against the rice leaf-roller Cnaphalocroos Medinalis guenee(Kerala Agricultural University, 1976) Das, N M; Nair, M R G KTwenty four insecticides were evaluated against the caterpillars of Cnaphalocrocis medinalis Guenee in the laboratory using a new laboratory technique of spraying them within leaf folds under a Potter's Tower and in field experiment in which the per cent reduction of larval population caused by spraying was assessed. The results of the two experiments showed strict correspondence. Ethyl parathion, carbaryl, carbophenothion, dimethoate, fenthion fenitrothion and leptophos were found very effective against C. medinalis larvae while phosphamidon, phorate, formothion, methyl demeton, quinalphos, monocrotophos, thiometon and acephate, were moderately effective.Item Field evaluation of insecticides against pests of paddy(Kerala Agricultural University, 1975) Susamma Mathai; Christudas, S P; Nair, M R G K