Browsing by Author "Kumaragamage, D."
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Item Adsorption of paraquat in selected Sri Lankan soils(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1996) Ratnayake, J.I.L.B.; Kumaragamage, D.Item Beneficial management practices on growth and yield parameters of maize (zea mays) and soil fertility improvement(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2015) Chathurika, J.A.S.; Indraratne, S.P.; Dandeniya, W.S.; Kumaragamage, D.Item A comparison of citric acid solubilities of commercially available Eppawala rock phosphate and selectively mined primary apatite crystals after mixing with peat(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1993) Rathnayake, M.P.K.; Kumaragamage, D.; Dahanayake, K.Item Comparison of selectively mined apatite crystals and commercially available rock phosphate from Eppawala, as P fertilizers for flooded rice(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1994) Ratnayake, M.P.K.; Kumaragamage, D.; Dahanayake, K.Item Effect of neem (Azadirachta indica A. Juss) materials on nitrification of applied urea in three selected soils of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1998) Gnanaveirajah, N.; Kumaragamage, D.Item Efficiency of peat-mixed rock phosphates on some alfiisols and ultisols of Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 1996) Ratnayake, M.P.K.; Kumaragamage, D.; Dahanayake, K.Item Evaluation of AB-DTPA extractant for the estimation of plant available macro and micro nutrients in acidic and neutral soils(Soil Science Society of Sri Lanka:Colombo, 1999) Madurapperuma, W.S.; Kumaragamage, D.Item Evaluation of phosphorus extraction methods for assessing phosphorus availability of some Sri Lankan soils(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1995) Withana, A.K.; Kumaragamage, D.Item Evaluation of site -specific fertilizer recommendation for cauliflower (Brassica oleracea L.) in two locations in Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2007) Kirthisinghe, J.P.; Kumaragamage, D.; Sultanbava, F.Item Fate of Diuron in selected Agricultural soils(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1998) Ratnayake, J.I.L.B.; Kumaragamage, D.Item Formulation and testing of site specific fertilizer recommendation for bitter gourd (Momordica charantia L.)(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2007) Amarasekara, M.G.T.S.; Indraratne, S.P.; Kumaragamage, D.; Sultanbava, F.Item Geoenvironmental assesment for nitrate pollution of ground water by fertilization in shiroishi plain in Japan(Soil Science Society of Sri Lanka:Colombo, 2002) Gunatilake, S.K.; Iwao, Y.; Gunatilake, J.; Kumaragamage, D.Item An investigation on phosphate adsorption in six Sri Lankan soils in relation to their chemical and mineralogical properties(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1991) Jayawickrama, S.P.; Thenabadu, M.W.; Kumaragamage, D.Item Nitrate leaching as a function of fertilization and irrigation practices in sandy regosols(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2004) Bawatharani, T.; Mowjood, M.I.M.; Dayawansa, N.D.K.; Kumaragamage, D.Item Nitrogen leaching losses and plant response to nitrogen fertilizers as influenced by application of neem (Azadirachta indica A. juss) materials(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1999) Gnanavelrajah, N.; Kumaragamage, D.Item Organic manure as a supplementary source of nitrogen in wetland rice cultivation(Soil Science Society of Sri Lanka:Colombo, 2001) Sirisena, D.N.; Wickramasinghe, W.M.A.D.B.; Weerakoon, W.M.W.; Bandara, S.T.; Kumaragamage, D.Item Potential risk of groundwater contamination with herbicides inthe wet zone of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2002) Adikaram, A.M.T.N.K.; Kumaragamage, D.Item Retention of phosphorus by some surface soils of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1993) Withana, A.K.; Kumaragamage, D.Item Rocks and minerals(NARESA:Colombo; 82p, 1986) Kumaragamage, D.; Thenabadu, M.W.Item Seasonl variation of learching of nitrate under onion cultiv:rtion in sandy regosols and its predictions by LEACHM-N(Faculty of Agriculture, Eastern University:Chenkalady, 2010) Bawatharani, M.l.M.; Mowjood, M.I.M.; Dayawansa, N.D.K.; Kumaragamage, D.