Ranagalage, AS, TSD Jayakody, and DL Wathugala. 2014. “Allelopathic Potential of Rice Residues of Selected Rice Varieties (Oryza Sativa L.) Against Echinochloa Crus-Galli”. Journal of Tropical Forestry and Environment 4 (2). https://doi.org/10.31357/jtfe.v4i2.1848.