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Item Plant parasitic nematodes - the invisible enemy of cultivated crops(1982) Gnanapragasam, N.C.Item Susceptibility / resistance of weeds to pathogenic nematodes of tea(Tea Reseaech Institute:Talawakele, 1989) Gnanapragasam, N.C.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 Metabolic disruptors (semio chemicals) and their utilization as a pest mangement strategy(TRI:Talawakelle, 1982) Gnanapragasam, N.C.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 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 Pathogenicity of the burrowing nematode Radopholus similis to young tea at different initial density(Tea Research Institute. Talawakele, 1989) Gnanapragasam, N.C.Item Variety response of pepper to infestation by the burrowing nematode, Radopholus similis(Tea Research Institute. Talawakele, 1989) Gnanapragasam, N.C.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 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.