Efficacy of herbicides on weed parameters and yield of greengram [Vigna radiata Wiljeck]

Weed management studies were conducted to find out economically viable and cost-effective application of herbicides on productivity of greengram during kharif season of 2020–21 and 2021–22 on sandy loam soils of Rajasthan. The 10-treatments with 4 replications were tested in randomized block design. Herbicide fomesafen 11.1% + fluazifop-p-butyl 11.1% SL @ 220 g/ha recorded the maximum weed control efficiency and weed dry matter and found at par with sodium acifluorfen 16.5% + clodinafop propargyl 8% EC @187.5 g/ha and propaquizafop 2.5% + imazethapyr 3.75% w/w @ 135 g/ha applied at 20 DAS. These were significantly superior over weedy check. Improvement in the crop growth, yield attributes and yield were also recorded with above herbicides. Although, hoeing twice at 25 and 40 DAS recorded higher seed yield but low B:C ratio (2.8) as compared to fomesafen 11.1% + fluazifop-p-butyl 11.1% SL @ 220 g/ha (3.1) and sodium acifluorfen 16.5% + clodinafop propargyl 8% EC @ 187.5 g/ha (3.1) and propaquizafop 2.5% + imazethapyr 3.75% w/w @ 135 g/ha at 20 DAS (3.0). Hence, application of herbicides in greengram holds a great promise for timely, cost effective and economic weed management.