Effect of rice establishment methods on weedy rice (Oryza sativa L.) infestation and grain yield of cultivated rice (O. sativa L.) in Sri Lanka - Chauhan, Bhagirath S.; Abeysekera, Anuruddhika S.K.; Wickramarathe, Manoja S.; Kulatunga, Sakinda D.; Wickrama, Upali B. (Elsevier, 2014)