This article Citation:

Aparna Sharma, K.K. Agrawal, J.K. Sharma and A.K. Jha. 2020. Bio-efficacy of bentazone 48% SL as post-emergence against weeds in direct-seeded rice . Indian Journal of Weed Science : 52( 1) 74- 77.







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Volume Issue Publication year Page No Type of article
52 1 2020 74-77 Research note
Bio-efficacy of bentazone 48% SL as post-emergence against weeds in direct-seeded rice

Aparna Sharma, K.K. Agrawal, J.K. Sharma and A.K. Jha

DOI: http://dx.doi.org/10.5958/0974-8164.2020.00013.1

Email: aparnasharma701.as.com@gmail.com
Address: Jawaharlal Nehru Krishi Vishwa Vidyalaya Jabalpur, Madhya Pradesh 482 004, India

Keywords:

Bentazone

Dicot weeds

Direct-seeded rice

Weed control efficiency



Abstract:

The experiment was conducted during Kharif season of 2017 at Research Farm of Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh. The soil of experimental site was sandy clay loam in texture, medium in organic carbon (0.62%), available nitrogen (285 kg/ha), available phosphorus (17.45 kg/ha) and potassium (260 kg/ha) with neutral pH (7.1). The dominant weeds associated with direct-seeded rice in the experimental field were mainly comprised of monocot (Echinochloa colona), sedge (Cyperus iria) and dicot weeds (Mollugo pentaphylla, Phylanthus niruri, Eclipta alba, Corchorus olitorius and Alternanthera philoxeroides).Experiment consisted of total ten treatments comprising of seven doses of bentazone 600, 800, 1000, 1200, 1600, 1800 and 2000 g/ha, 2,4-D 380 g/ha as post-emergence, hand weeding twice (20 and 40 DAS) including weedy check, were laid out in a randomized block design with 3 replications. The post-emergence application of bentazone at higher doses i.e. 1800 and 2000 g/ha was found effective in reducing the weed density of dicot weeds to a great extent.





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