Browsing by Author "Wijewardena, J.D.H."
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Item Calcium magnesium and micronutrient status of citrus growing soils of lower Uva region of Sri Lanka(Soil Science Society of Sri Lanka:Peradeniya, 2004) Wijewardena, J.D.H.Item Drinking water quality of some wells in the intensive vegetable growing lands in the upcountry wet zone(Soil Science Society of Sri Lanka:Colombo, 2001) Wijewardena, J.D.H.; Yapa, U.W.S.P.; Yatagama, S.M.K.G.Item Effect of bat manure as a source of organic manure for vegetable cultivation in the Uva province(Soil Science Society of Sri Lanka:Colombo, 2002) Wijewardena, J.D.H.Item Effect of bat manure as a source of organic manure for vegetable cultivation in the Uva province(Soil Science Society of Sri Lanka:Colombo, 2002) Wijewardena, J.D.H.Item Effect of moisture content, added fertilizer and packaging material on microbial biomass carbon of composting inoculum bag over time(Faculty of Agriculture and Plantation Management, Wayamba University:Makandura, 2009) Gunatilake, H.R.J.D.; Weerakkody, W.J.S.K.; Wijewardena, J.D.H.Item Effect of organic and chemical fertilizers on vegetable cultivation in upcountry intermediate zone(Department of Agriculture:Peradeniya, 1993) Wijewardena, J.D.H.Item Effect of phosphorus sources and levels with particular emphasis on selectively mined Eppawela rock phosphate on vegetable production(National Science Foundation:, 1998) Wijewardena, J.D.H.Item Effect of sulphur and poultry manure application to vagetable crops(Soil Science Society of Sri Lanka:Colombo, 2001) Wijewardena, J.D.H.Item Effect of triple superphosphate and rock phosphate combinations on vegetable production in the upcountry of Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 1999) Wijewardena, J.D.H.Item Influence of initial raw material mixture and inoculum on composting period(Faculty of Agriculture and Plantation Management, Wayamba University:Makandura, 2009) Wimalaweera, E.S.P.; Weerakkody, W.J.S.K.; Wijewardena, J.D.H.Item Long-term use of potassium fertilizer for vegetable crops in the upcountry intermediate zone(NARESA:Colombo, 1997) Wijewardena, J.D.H.; Amarasiri, S.L.Item Status of selected micronutrients in vegetable growing soils of the low country wet zone of Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 2003) Wijewardena, J.D.H.; Kannangara, E.H.Item Sustainable plant nutrient management in intensive vegetable growing lands in the upcountry of Sri Lanka(Soil Science Society of Sri Lanka :Colombo, 2000) Wijewardena, J.D.H.Item Use of single superphosphate fertiliser produced using Eppawala rock phosphate as a source of phosphorous for rice cultivation(NSF:Colombo, 2020-06) Udawatte, C.P.; Panagoda, P.V.A.; Wickramasinghe, W.M.A.D.B.; Wijewardena, J.D.H.; Sirisena, D.N.; Emitiyagoda, S.; Bandara, H.R.U.D.