Evaluation of herbicides for weed control in three varieties of upland rice (oryza sativa L.) in the Nigerian Savannah

The effect of herbicides for weed control in three upland rice varieties was evaluated in the Nigerian savannah. Among the herbicides evaluated, pretilachlor+dimethametryne at 2.5 kg a.i./ha and piperophos+cinosulfuron at 1.5 kg a.i/ha perfomed well as they effectively controlled weeds and resulted in better growth and grain yield that was comparable to the hoe-weeded control.Among the rice varieties evaluated, WAB 56–50 and FARO 40 performed better than FARO 38 as they resulted in better growth and yield.