International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2021, Vol. 3, Issue 4
Studies on weed management practices in onion (Allium cepa L.) under central dry zone of Karnataka

Vijaykumar M N, Umamaheswarappa P, Srinivas V, Lakshmana D, Kantharaj Y, Y Rammohan

A field experiment was conducted to study the efficacy of different weed management practices in onion at Zonal Agricultural and Horticultural Research Station, Babbur Farm, Hiriyur, Chitradurga during rabi 2020-21, having nine treatments replicated thrice in Randomized Complete Block Design. Among the different weed management practices, Hand weeding at 15, 30, 45 and 60 days after transplanting (DAT) recorded significantly maximum growth parameters at 90 DAT viz., plant height (72.47 cm), number of leaves per plant (11.93), collar thickness (15.29 mm) and also yield parameters viz., neck thickness before (13.49 mm) and after curing (12.63 mm), polar (5.69 cm) and equatorial diameter (6.43 cm) of bulb, total bulb yield (32.04 t/ha) and marketable bulb yield (31.70 t/ha). 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., plant height (69.73 cm), number of leaves per plant (11.20 mm), collar thickness (14.81) and also yield parameters viz., neck thickness before (12.79 mm) and after curing (12.13 mm), polar (5.25 cm) and equatorial diameter (6.12 cm) of bulb, total bulb yield (31.85 t/ha), marketable bulb yield (31.44 t/ha). 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.
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How to cite this article:
Vijaykumar M N, Umamaheswarappa P, Srinivas V, Lakshmana D, Kantharaj Y, Y Rammohan. Studies on weed management practices in onion (Allium cepa L.) under central dry zone of Karnataka. International Journal of Ecology and Environmental Sciences, Volume 3, Issue 4, 2021, Pages 100-102
International Journal of Ecology and Environmental Sciences International Journal of Ecology and Environmental Sciences