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Item Effect of waste tea (tea fluff) on growth of young tea plants (Camellia sinensis L.)(Tea Research Institute. Thalawakele, 1981) Krishnapillai, S.Item Studies on the mineral nutrition of tea - 4 ammonium and nitrate as forms of nitrogen fro tea plants in sand culture(The Tea Research Institute. Talawakele, 1971) Pethiyagoda, U.; Krishnapillai, S.Item Effect of forms and levels of nitrogen on the growth and accumulation of nitrogen , phosphorus potassium and calcium by young tea plants (Camellia sinensis L.) grown in sand culture(Tea Research Institute. Thalawakele, 1981) Krishnapillai, S.Item Effect of cutting and defoliation on nitrogen uptake by young tea plants (Camellia sinensis L.) grown in sand culture(Tea Research Institute. Thalawakele, 1983) Krishnapillai, S.Item Studies on the mineral nutrition of tea 4 - ammonium and nitrate as forms of nitrogen for tea plants in sand culture(Tea Research Institute. Thalawakele, 1971) Pethiyagoda, U.; Krishnapillai, S.Item Studies on the mineral,nutrition of tea 2: experimentally induced .major nutrient deficiency symptoms(1970) Pethiyagoda, U.; Krishnapillai, S.