Assessing the Efficacy of Different Herbicides for Controlling Weeds in Rabi Onion (Allium cepa L) at Saharsa District of Bihar, India

An effort was undertaken to determine the best weed management techniques for controlling weeds in onions that are both practically and financially viable for farmers. Due to weed competition, onions, which are shallow-rooted, slow-growing crops, can experience significant output loss. Their non-branching nature and short, upright leaves make them less competitive with weeds. Additionally, they allow for multiple flushes of weeds because to their lengthy growing season, frequent irrigation, and fertilizer application. During the Rabi season in 2017 and 2018, the experiment was carried out in the farmers' fields of Saharsa district, Bihar, using the "On Farm Trial" mode for two years. Technology option-III, which yielded the maximum net return of up to Rs 275420 q/ha, was the best treatment in terms of net return. The benefit-to-cost ratio differed greatly between the therapies. Technology option III had the highest benefit cost ratio (2.92), which was comparable to Technology option II (2.66) statistically.