Author(s):

Ramyajit Mondal, Champak Kumar Kundu, Utpal Biswas, Sahuji Bandyopadhyay and Madhab Kumar Datta

Abstract: The experiment was conducted during Rabi season of 2013-14 and summer season of 2014 at Regional Research Station, New Alluvial Zone, Chakdaha, Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India to disclose the bio-efficacy and phytotoxicity of 2, 4-D dimethylamine 58% SL in wheat and its effect on succeeding crop blackgram. The field trial consisting of eight different treatments and laid out in randomized block design with three replications. Application of 2, 4-D dimethylamine 58% SL 1 kg a.i. ha^-1and 2, 4-D dimethylamine 58% SL 0.75 kg a.i. ha^-1 have resulted in effective weed control, and contributed in significantly high grain yield of wheat and no phytotoxicity was observed through these applied treatments which were statistically comparable to hand weeding twice. The said treatments were statistically superior to two round of hand weeding and other doses of 2, 4-D dimethylamine 58% SL. 2, 4-D dimethylamine 58% SL applied on wheat with different doses have found no residual effect on germination and yield of succeeding blackgram crop. So, these treatments can be a good option for wheat and succeeding black gram crop under sub-humid and subtropical condition of West Bengal.

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