Browsing by Author "Pathirana, R.P.S.P."
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Item Threshold density of Echinocloa crusgalli (L) beauv. in rice weed competition(National Science Council :Colombo, 1986) Senanayake, N.; Ananda, w.W.S.R.M.R.; Pathirana, R.P.S.P.Item Threshold weed competition duration of mungbean (Phaseolus aureus. Roxb)(National Science Council:Colombo, 1987) Sennanayake, N.; Pathirana, R.P.S.P.