Nodulation, weed flora and yield of greengram (Vigna radiata) influenced by use of herbicides

Varsha Gupta; Ekta Joshi; Deep Singh Sasode; B S Kasana

doi:10.56093/ijas.v90i7.105568

Authors

Varsha Gupta Rajmata Vijayaraje Scindia Krishi Viswa Vidhyalaya, Gwalior, Madhya Pradesh 474 002, India
Ekta Joshi Rajmata Vijayaraje Scindia Krishi Viswa Vidhyalaya, Gwalior, Madhya Pradesh 474 002, India
Deep Singh Sasode Rajmata Vijayaraje Scindia Krishi Viswa Vidhyalaya, Gwalior, Madhya Pradesh 474 002, India
B S Kasana Rajmata Vijayaraje Scindia Krishi Viswa Vidhyalaya, Gwalior, Madhya Pradesh 474 002, India

https://doi.org/10.56093/ijas.v90i7.105568

Keywords:

Greengram, Herbicides, Nodulation, Seed yield, Weed management

Abstract

A field experiment was conducted during kharif 2016 and 2017 at Research Farm, College of Agriculture, RVSKVV, Gwalior (MP) to determine the most effective herbicide/combination of herbicides to control the problematic weeds in greengram. The experiment was laid out with 10 treatments, viz quizalofop-p-ethyl 50, 75 & 100 g/ha PoE, fenoxaprop-p-ethyl 100 g/ha PoE, pendimethalin 1000 g/ha (PE), pendimethalin + imazethapyr (RM) 750 & 1000 g/ha PE, imazethapyr + imazamox (RM) 80 g/ha PoE, two hand weeding at 20 and 40 DAS and weedy check in a Randomized Block Design. The combination of post-emergence herbicide imazethapyr + imazamox (RM) 80 g/ ha was found to be very efficient in controlling the dominant grassy weeds as well as broad leaved weeds and gave maximum seed yield (993 kg/ha) followed by the cultural method of weed control where two hand weedings at 20 and 40 DAS have done (983 kg/ha). In respect of nodulation two hand weeding 20 and 40 DAS recorded maximum nodule number of 15.52/plant at 40 DAS followed by the application of imazethapyr + imazamox (RM) 80 g/ha PoE 14.45/plant. The application of imazethapyr + imazamox (RM) 80 g/ha PoE resulted in highest B:C ratio (3.03) and net returns followed by pendimethalin + imazethapyr 750 g/ha PE.

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