G.KATHIRESAN, and M.L. MANOHARAN. 2001. “Effect of Seed Rate and Methods of Weed Control on Weed Growth and Yield of Direct sown.Rice (Oryzasativa)”. Indian Journal of Agronomy 47 (2): 47_2 . https://pub.isa-india.in/index.php/ija/article/view/3148.