Almix alone at 4 g ha- ' was effective in reducing the density of non-grasses and sedges in transplanted rice. Butachlor alone at 1250 g ha- ' was effective against annual grasses. Almix at 4 g ha- ' was compatible witli butachlor as tank mixed application. Almix at 4 g ha- J as tank. mixed or follow up application over pre-emergence application of butachlor increased weed control spectrum and efficacy and produced grain yields at par with weedfree and higher than alone application of butachlor or Almix.