Effect of weed management treatments on weed count, weed dry matter and bulb yield of onion under varying levels of nitrogen

A field experiment was conducted at SKN College of Agriculture, Jobner for two consecutive years during Rabi 2016-17 and 2017-18 to find out the efficient weed management in onion under varying levels of nitrogen. Among the different weed management treatments weed free check i.e. twice hand weeding treatment with 100 kg N/ha recorded significantly lowest weed dry weight and higher bulb yield compared to rest of the treatments except application of pendimethalin (PP) + oxadiargyl at 40 DAT combined with 100 kg N/ha or application of pendimethalin (PP) + 1 HW at 40 DAT combined with 100 kg N/ha, being statistically at par with each other.