Abstract: Field experiment was conducted at Agricultural Research Station Serai Naurang, Bannu to find out the effect of two weedicides, i.e., Ronstar @ of 3 kg ha-1 and stomp 330E @ 4 lit ha-1 along with hand weedings, i.e., 2 and 4 times, keeping the required intervals in onion crop. Onion cultivar transplanted was Swat-1. The data were recorded on fresh yield with leaves; dry yield with leaves and bulb yield without leaves tons ha-1. From the analysis of data, using LSD test, it was observed that fresh yield, dry yield and bulb yield tons ha-1 of onion were significantly increased with the application of Ronstar @ of 3kg ha-1 which produced 30.51, 26.33 and 25.19 tons ha-1, respectively. Four times hand weeded plots followed the Ronstar treated plots and produced fresh yield, dry yield and bulb yield of 27.66, 23.71 and 22.10 tons ha-1, respectively.