Author(s):

Rakhi Mahto and Arvind Kumar Singh

Abstract: A field experiment was carried out during Kharif season of 2014-15 at agricultural research farm Ranchi, Jharkhand with an objective to study the effect of insecticide and herbicide combination on productivity of soybean. There were twelve treatment combinations consisted of two herbicides, namely Imazathapyr 10 SL @ 1.0 l/ha and Quizalafop ethyl 5 EC @ 1.0 l/ha and three Insecticides Rynaxypyre 20 SC @ 100 ml/ha, Indoxacarb 14.5 SC @ 300 ml/ha, and Quinalphos 25 EC @ 1.5 l/ha. These were applied alone and in combination and the results were compared with untreared check. Results indicated that application of Rynaxypyre 20SC @ 100 ml/ha + Imazathapyr 10 SL @ 1.0 l/ha recorded significantly higher pods/plant, soybean yield (1588 kg/ha) and lower weed density as compared to other treatments and it was on par with application of Imazethapyr 10 % SL @ 1.0 l/ha alone.

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