Study on the chemical weed control in upland rice

Cyperus rotundus, Cyiwdon dactylon, Eclupta alba, Dactytoctenium aegyptium, Fimbristytis spp., Echinochloa ceionum, Rangia rrpens and Physalis minima were the major weeds. Effect of herbicides was not consistent. During wet year herbicide effect was well pronounced. Combinations of herbicides and hand weeding proved better than herbicides alone. Among the combinations, Butachlor+hand weeding and pendimethalin+hand weeding combinations caused higher increase in grain yield as compared to other treatments.