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Item Biotechnology for the improvement of the tea crop(NSF:Colombo, 2015-06) Kathiravetpillai, A.Item Effect of sprays of plant growth regulator hydrogen cyanamide (Dormex) on yield of tea(Tea Research Institute. Talawakele, 1997) Kathiravetpillai, A.; Abeysekera, U.P.; Jayasekera, A.P.D.A.; Jayasinghe, J.A.S.K.V.; Jayawickrema, P.K.Item Use of compost in tea(Tea Reseaech Institute:Talawakele, 1986) Kathiravetpillai, A.Item Effect of additives on the phytotoxicity of glyphosate to Panicum repens (L.) Beauv(Tea Research Institute. Talawakele, 1989) Kathiravetpillai, A.; Punyasiri, P.A.N.Item Effect of grafting fresh cuttings on yield and drought resistance in tea(Tea Research Institute. Talawakele, 1992) Pallemulla, D.; Shanmugarajah, V.; Kathiravetpillai, A.Item Observations on roots of tea plants with active and dormant shoots(Tea Research Institute. Thalawakele, 1972) Kulasegaram, S.; Kathiravetpillai, A.Item Soil erosion and conservation in new plantings(Tea Reseaech Institute:Talawakele, 1993) Kathiravetpillai, A.Item Effects of (2-chloroethyl) trimethyl ammonium chloride (CCC) on growth and of gibberellic acid (GA3) and CCC on chlorophyll and NPK content of leaves of young tea plants(Tea Research Institute. Thalawakele, 1981) Kathiravetpillai, A.; Kulasegaram, S.Item Growth of single and multinodal cuttings of tea under polyethylene(TRI:Talawakele, 1983) Kathiravetpillai, A.; Kulasegaram, S.