Efficacy of different weed management practices in weed control of onion (Alliumcepa L.) under central dry zone of Karnataka
Vijaykumar M N, Umamaheswarappa P, Srinivas V, Lakshmana D, Kantharaj Y, Y Rammohan
During Rabi 2020-21, a field experiment was conducted at Zonal Agricultural and Horticultural Research Station, Babbur Farm, Hiriyur, Chitradurga, to investigate the efficacy of different weed management practises in onion. The experiment had nine treatments and was replicated three times in Randomized Complete Block Design. Among the different weed management practices significantly maximum weed control efficiency (79.96 %) was observed in Hand weeding at 15, 30, 45 and 60 days after transplanting (DAT) and minimum weed density (31.00/m-2), fresh weight (53.00 g), dry weight (10.20 g), and weed index (0.00 %) was also observed in the same treatment. These values are statistically on par with the treatment T6 (Oxyfluorfen 45 % EC @ 0.75 l/ha 3 DAT + hand weeding at 45 DAT) i.e., weed control efficiency (77.16 %), weed density (35.33/m-2), fresh weight (69.67 g), dry weight (10.33 g), weed index (0.53 %) and herbicide efficiency index (40.88 %) was observed highest in T6. Based on the results obtained from the present investigation, hand weeding at 15, 30, 45 and 60 days after transplanting found to be promising for getting higher onion yield. However due to sever scarcity and non-availability of labours, it is not possible to carry out timely weeding operation in onion. So, the economically viable and comparatively effective weed control was observed in T6.
Vijaykumar M N, Umamaheswarappa P, Srinivas V, Lakshmana D, Kantharaj Y, Y Rammohan. Efficacy of different weed management practices in weed control of onion (Alliumcepa L.) under central dry zone of Karnataka. International Journal of Ecology and Environmental Sciences, Volume 4, Issue 1, 2022, Pages 21-24