Effect of different weed control treatments on rice grain yield (t ha−1) in dry-seeded rice in the dry seasons of 2013 (DS 13) and 2014 (DS 14). Abbreviations: Oxa, oxadiazon; fb, followed by; bis, bispyribac-sodium; fx + ethox, fenoxaprop + ethoxysulfuron; MW, mechanical weeding; LSD, least significant difference at the 5% level of significance.