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STUDY ON ROOT TRAITS OF DIFFERENT RICE VARIETIES (Oryza sativa L.) FOR NUTRIENT USE EFFICIENCY Gajanayake, G.M.S.J.; Padmathilaka, K.R.E.; Karunarathne, K.G.P.B.

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STAND CHARACTERISTICS AND TREE SPECIES DISTRIBUTION ALONG A MICROTOPOGRAPHIC GRADIENT IN A LOWLAND RAINFOREST LANDSCAPE IN SOUTHWEST SRI LANKA Thilanga, B.G.D.; Geekiyanage, N.; Madawala, M.M.G.I.N.M.B.; Perera, A.; Nanayakkara, S.

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