EFFECT OF HERBIGATION ON WEED CONTROL IN SOYBEAN UNDER RAISED BED CONDITION
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Date
2017
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Indira Gandhi Krishi Vishwavidyalaya, Raipur
Abstract
A field experiment was conducted during Kharif season of 2015 at the Research cum Instructional Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur to evaluate the effect of herbigation on weed control in soybean under raised bed condition [Glycine max (L.) Merril] under Vertisols of Chhattisgarh plains. The soil was clayey in nature, neutral in pH and had low nitrogen, medium phosphorus and high in potassium content. The experiment was laid out in Randomized Block Design with three replications. The five treatments consisted of various combination of herbigation Diclosulam 31g/ha/ PE through drip, Diclosulam 31g/ha PE followed by repeat after 30 DAS through drip, Imazethapyr 300ml/ha as PE through drip, Imazethapyr 300ml/ha as PE followed by repeat after 30 DAS through drip, and five treatments consisted of foliar application Diclosulam 31g/ha PE spray, Diclosulam 31g/ha as PE repeat after 30 DAS foliar spray, Imazethapyr 300ml/ha as PE spray, Imazethapyr 300ml/ha as PE followed by repeat after 30 DAS foliar spray, Diclosulam 31g/ha PE followed by Imazethapyr 700ml/ha as POE after 20 DAS foliar spray and two treatments consisted of weed free check and weedy check. The treatments were allotted in field follow the random methods. The results revealed that application of Diclosulam 31g/ha sequential application followed by Imazethapyr 300ml/ha as POE after 20 DAS through drip resulted significantly higher plant height, number of leaves, leaf area, leaf area index, number of pods-1 (61), (3.02) higher grain yield (1888 kg ha-1). The herbigation of Diclosulam 31g/ha sequential application followed by Imazethapyr 300ml/ha as POE after 20 DAS through drip recorded significantly higher yield and also net return of Rs 31046 with. B: C ratio of 1.72.
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