Evaluation of pre- and post-emergence herbicides for chemical weed management in sesame (Sesamum indicum L.) under assured rainfall conditions of North Maharashtra
EVALUATION OF PRE- AND POST-EMERGENCE HERBICIDES FOR CHEMICAL WEED MANAGEMENT IN SESAME
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Authors
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B D MALUNJKAR
Oilseeds Research Station, Mahatma Phule Krishi Vidyapeeth, Jalgaon-425001, Maharashtra
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N M MAGAR
ARS, Niphad, MPKV, Rahuri-413722, Maharashtra
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G B CHAUDHARI
Oilseeds Research Station, Mahatma Phule Krishi Vidyapeeth, Jalgaon-425001, Maharashtra
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S S PATIL
Oilseeds Research Station, Mahatma Phule Krishi Vidyapeeth, Jalgaon-425001, Maharashtra
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S S CHITODKAR
ARS, Niphad, MPKV, Rahuri-413722, Maharashtra
Keywords:
Herbicide, Pre-Emergence, Post-Emergence, Pyroxasulfone, Sesame, Weed managementAbstract
A field experiment was conducted during the kharif 2022 season at the Oilseeds Research Station, Jalgaon, to evaluate the efficacy of pre- and post-emergence herbicides for weed management in sesame. The experiment was laid out in a randomized block design with nine treatments and three replications. The results revealed that weed flora primarily consisted of grassy weeds, broad-leaved weeds and sedges. Pre-emergence application of pyroxasulfone @ 80 g/ha recorded the lowest weed density (5.45 and 6.16 weeds/m²), lowest weed dry matter (114.0 and 226.0 g/m²), and highest weed control efficiency (64% and 63%) at 30 and 60 DAS, respectively. This treatment also resulted in higher plant height (136.1 cm), more branches per plant (5.40), and greater seed yield (508 kg/ha), second only to the weed-free control (564 kg/ha). Economic analysis indicated the highest net returns (`42,449/ha) from the weed-free treatment, closely followed by pyroxasulfone @ 80 g/ha (`40,583/ha), which also had the highest benefit-cost ratio (2.99). Overall, pyroxasulfone @ 80 g/ha emerged as the most effective and economically viable herbicidal option for managing weeds and improving sesame productivity under the assured rainfall conditions of North Maharashtra.
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