Participatory Evaluation of Herbicides in Wheat in Western Terai, Nepal

The yield losses due to weeds vary depending on the weed species, their density and environmental factors. For controlling in wheat, farmers rely herbicides cost time effectiveness. Keeping these facts view a field experiment was conducted identify appropriate for wheat. carried out at three locations of Kapilvastu, Rupandehi Nawalparasi during 2016/17 2017/18. Pendimethalin 30 EC, Sulfosulfuron g a.i ha-1 control treatments were evaluated six an area 330 m2 each treatment replicated times. Wheat variety Tilottama planted experiment. fertilizer applied rate 100:50:50 N: P2O5: K2O kg ha-1. Weed populations recorded 30, 60 90 days after sowing 0.25 m-2 spots growth, attributes data wheat collected analyzed using Genstat statistical package. In 1 a.i. Sulsosulfuron @ 25 (no herbicide spray) significantly difference plant height, spike grain but not significant length 1000 grains weight Bimiha, Bhagdari Nadawa sites. Both found effective population. Whereas 2017/18 EC. as pre-emergence sulfosulfuron post emergence suppress Plant variables spikes Based pooled results it could be concluded that population increased crop over weedy check.