Study on the Effects of Chemical and Conventional Weed Management Practices on Seed Production in Kharif Onion (Allium cepa L.)

An experiment was carried out to the study on the effects of chemical and conventional weed management practices on seed production in kharif onion (Allium cepa L.)”was conducted in kharif seasons of years 2013–14 in a randomized block design with nine treatments having combinations of hand weeding with application of pendimethalin 1.0 kg/ha, oxyfluorfen 0.25 kg/ha and quizalofop-p-ethyl 0.25 kg/ha. Weed management with their Three hand weeding at 30, 60, and 90 DAT recorded significantly maximum yield parameters in onion viz. number of umbels plant⁻¹, umbels diameter(cm), Seed weight per umbel, seed yield(kg plot⁻¹ and qha⁻¹) germination percent, seedling vigor index. Followed by application of pendimethalin pre-transplanting @ 1.25 kg ha⁻¹ (fb) pendimethalin @ 1.25 kg ha⁻¹ at 30 DAT which was found practically more convenient and economically feasible weed management method for seed production in kharif onion.