Relationship between soil moisture deficit and productivity of paddy lands in a major irrigation system in Intermediate zone of Sri Lanka

by A. C. S. Perera, E. R. N. Gunawardena, B. V. R. Punyawardena
Published 2016-05-01

Recent changes of rainfall Regime of <em>Hakwatuna Oya</em> watershed of Sri Lanka

by A. C. S. Perera, B. V. R. Punyawardena, E. R. N. Gunawardena
Published 2016-12-01

Aligning Sowing Dates with the Onset of Rains to Improve Rice Yields and Water Productivity: Modelling Rice (Oryza sativa L.) Yield of the Maha Season in the Dry Zone of Sri Lanka

by R.P.R.K. Amarasingha, L.W. Galagedara, B. Marambe, G.L.L.P. Silva, R. Punyawardena, U. Nidumolu, M. Howden, L.D.B. Suriyagoda
Published 2015-10-01

Modelling the impact of changes in rainfall distribution on the irrigation water requirement and yield of short and medium duration rice varieties using APSIM during Maha season in...

by R.P.R.K. Amarasingha, L.D.B. Suriyagoda, B. Marambe, L.W. Galagedara, G.L.L.P Silva, R. Punyawardena, R. Wijekoon, U. Nidumolu, M. Howden
Published 2015-11-01