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Item Eppawela rock phosphate fertilizer(Tea Research Institute:Talawakele, 1989) Wimaladasa, G.D.Item Effect of application of NPK fertilizers on the natural incidence of vesicular arbuscular mycorrhiza in the rhizosphere soils and feeder roots of tea (Camellia sinensis)(Tea Research Institute. Talawakele, 2000) Balasuriya, A.; Wimaladasa, G.D.; Ratnayake, R.M.A.