IMPACT OF PRE AND POST PLANTING HERBICIDES ON GROWTH PERFORMANCE AND YIELD OF ORYZA GENOTYPES IN SRI LANKA S.R. Weerakoon W.J. Nimanthika DOI: https://doi.org/10.28941/pjwsr.v18iSI.459 PDF Published 2011-12-01 Issue Year 2012, Volume 18 , Issue SI Section Articles