Efficacy of herbicides and nutrient management on weed dynamics and yield of French bean (Phaseolus vulgaris)

SMITA SINGH; R P SINGH; U N SHUKLA; J K SINGH; O N SINGH

doi:10.56093/ijas.v88i11.84933

Authors

SMITA SINGH Research Scholar, Department of Agronomy, Institute of Agricultural Sciences, BHU, Varanasi, Uttar Pradesh 221 005
R P SINGH Department of Agronomy, Institute of Agricultural Sciences, BHU, Varanasi, Uttar Pradesh 221 005
U N SHUKLA Department of Agronomy, Institute of Agricultural Sciences, BHU, Varanasi, Uttar Pradesh 221 005
J K SINGH Department of Agronomy, Institute of Agricultural Sciences, BHU, Varanasi, Uttar Pradesh 221 005
O N SINGH Department of Agronomy, Institute of Agricultural Sciences, BHU, Varanasi, Uttar Pradesh 221 005

https://doi.org/10.56093/ijas.v88i11.84933

Keywords:

Integrated nutrient management, WCE, Weed density, Weed dry weight, Weed management, WI, Yield

Abstract

A field experiment was conducted to assess the effect of herbicides and integrated nutrient managements on weed dynamics, NPK removal and yield of French bean (Phaseolus vulgaris L.) at Banaras Hindu University, Varanasi during 2009 and 2010. The results revealed that the pendimethalin fb quizalofop-p-ethyl had significantly marked potential to minimize the weed dynamics of Chenopodium album, Melilotus alba, Melilotus indica and Cyperus rotundus significantly, resulted in marked reduction on total weed density (41.48 and 41.11 nos/m), weed dry weight (45.62 and 44.68 g/m) and weed index at all stages of crop growth during 2009 and 2010, respectively and showed higher weed control efficiency over the alone application of pendimethalin. Recommended dose + 200 kg Wellgro Soil (Dust) minimized broad leaves weeds (BLWs) over rest of the fertility levels but at par with RD + 300 kg Wellgro Soil (Dust) in respect of BLWs weed density that resulted in enhanced weed index due to higher weed control efficiency over rest of the fertility levels during both the years of study. Significantly lower NPK removal by weeds at harvest recorded with pendimethalin fb quizalofop-p-ethyl under recommended dose + 200 kg Wellgro Soil (Dust), though remained at par with recommended dose + 300 kg Wellgro Soil (Dust).

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