Browsing by Author "Gnanapragasam, N.C."
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Item Assessment of sex pheromone activity in virgin female moths of the tea Tortrix (Homona coffearia, Lepidoptera : Tortricidae) and its utilization in monitoring moth populations in tea fields(Tea Research Institute. Thalawakele, 1975) Sivapalan, P.; Gnanapragasam, N.C.Item The biology of the tea tortrix , Homona coffearia , nietner (Lepidoptera: tortricidae) reared under defined conditions on an artificial diet in vitro(Tea Research Institute. Thalawakele, 1980) Gnanapragasam, N.C.; Sivapalan, P.Item Chemical control of the root-lesion nematode, Pratylenchus loosi, in new tea plantings(Tea Research Institute. Thalawakele, 1980) Sivapalan, P.; Gnanapragasam, N.C.; Jebamalai, A.S.Item Control of root- lesion nematode, pratylenchus loosi in contaminated tea nursery plants.(Tea Research Institute. Talawakelle, 1987) Gnanapragasam, N.C.; Jebamalai, A.S.; Anpalagan, V.T.Item Development of a defined diet to rear the tea tortrix, Homona coffearia Nietner, in vitro(Tea Research Institute. Thalawakele, 1982) Gnanapragasam, N.C.Item Dietary amino acid requirements of the tea tortrix, Homona coffearia Nietner (Lepidopteran:Tortricidae) reared in vitro(Tea Research Institute. Talawakele, 1985) Gnanapragasam, N.C.; Sivapalan, P.Item Effect of environment on population dynamics of plant parasitic nematodes and consequent pathogenicity to tea(Tea Reseaech Institute:Talawakele, 1994) Gnanapragasam, N.C.Item Effect of Jawan a neem based natural pesticide in controlling nematode pests of tea(Tea Research Institute. Talawakele, 1993) Gnanapragasam, N.C.; Mohotti, M.; Sureshkumar, B.; Udamulla, G.P.Item Effect of potassium fertilization and of soil temperature on the incidence and pathogenicity of the root-lesion nematode, Pratylenchus loosi Loof on tea (Camellia sinensis )(Tea Research Institute. Thalawakele, 1982) Gnanapragasam, N.C.Item The effect of soil temperature and of infestation by pratylenchus loost on the growth and nutrient status of a susceptible and tolerant variety of young tea (Camellia sinensis L.)(Tea Research Institute. Thalawakele, 1975) Sivapalan, P.; Gnanapragasam, N.C.Item Incidence of nematode damage in the mid-country caused by the burrowing nematode, Radopholus similis(Tea Research Institute. Thalawakele, 1983) Gnanapragasam, N.C.Item The influence of cultivating Eragrostis curvula in nematode infested soils, on the subsequent build up of population in replanted tea(Tea Research Institute. Thalawakele, 1981) Gnanapragasam, N.C.Item Influence of inoculum level and temperature on the population build-up and pathogenicity of the root-lesion nematode (Pratylenchus loosi Loof) of tea(Tea Research Institute. Thalawakele, 1984) Gnanapragasam, N.C.; Manuelpillai, M.E.K.Item Metabolic disruptors (semio chemicals) and their utilization as a pest mangement strategy(TRI:Talawakelle, 1982) Gnanapragasam, N.C.Item Pathogenicity of the burrowing nematode Radopholus similis to young tea at different initial density(Tea Research Institute. Talawakele, 1989) Gnanapragasam, N.C.Item Plant parasitic nematodes - the invisible enemy of cultivated crops(1982) Gnanapragasam, N.C.Item Relative growth response of tea clones grown in soil fumigated with dazomet 98% G and methyl bromide and in uninfested soil(Tea Research Institute. Thalawakele, 1982) Gnanapragasam, N.C.Item Relative rates of egg hatch of the root-knot nematode of mature tea, Meloidogyne brevicauda, in relation to other species of this mematode(Tea Research Institute. Thalawakele, 1981) Gnanapragasam, N.C.; Manuelpillai, M.E.K.Item Rotylenchulus reniformis, the new nematode species causing damage to tea in Sri Lanka(Tea Research Institute:Talawakele, 1987) Gnanapragasam, N.C.; Ariyaratnam, V.; Navaratne, N.Item Susceptibility / resistance of weeds to pathogenic nematodes of tea(Tea Reseaech Institute:Talawakele, 1989) Gnanapragasam, N.C.