首页|Weed control efficacy of different post-emergence herbicides in mungbean (Vigna radiata) in hot arid regions
Weed control efficacy of different post-emergence herbicides in mungbean (Vigna radiata) in hot arid regions
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NSTL
? 2021, Indian Society of Agronomy. All rights reserved.A field experiment was carried out during the rainy (Kharif) season of 2017 to 2019 at Jodhpur, Rajasthan to find the herbicide effective for mungbean [Vigna radiate (l.) R. Wilczek] in arid regions. The treatments comprised pre-emergence and post-emergence herbicides along with hand-weeding, weed-free, and unweeded. Results revealed that, weed-control treatments brought about a 48.9–73.3% reduction in total weeds density and 46.8– 80.1% reduction in dry weed weight at harvesting as compared to unweeded control. Post-emergence application of propaquizafop + imazethapyr @125 g a.i./ha, being at par to other imazethapyr treatments and hand-weeding, resulted in significantly lowest total weed density (24.1/m2) and total weed dry weight (66.6 g/m2) with highest weed-control efficiency (80.1%) and showed the lowest values of weed index (18.4). Moreover, post-emergence application of clodinafop-propargyl + sodium acifluorfen @ 312.5 g a.i./ha also exhibited weed-control efficiency (73.2%) and weed index (21.0) at par with other imazethapyr treatments and hand-weeding. Propaquizafop + imazethapyr @ 125 g a.i./ha, being at par with clodinafop-propargyl + sodium acifluorfen @ 312.5 g a.i./ha and weed-free recorded significantly higher crop dry weight (542 g/m2), pods/plant (24.7), 1,000-seed weight (55.2 g), seed yield (840 kg/ha), and stover yield (2,563 kg/ha). Application of propaquizafop + imazethapyr @125 g a.i./ha also registered highest gross returns (?58.08 × 103/ha) and net returns (?42.58 × 103/ha) which were comparable to returns recorded under clodinafop-propargyl + sodium-acifluorfen @ 312.5 g a.i./ha. Propaquizafop + imazethapyr @ 125 g a.i./ha being comparable with clodinafop-propargyl + sodium-acifluorfen @ 312.5 g a.i./ha was also found superior in terms of impact assessment indices.
Arid regionseconomic threshold densityimazethapyrmungbeanweed indices
NSTL
