Effect of different herbicides on growth, yield and economics of crops in wheat-chickpea intercropping system

Abstract

In the Rabi season of 2020-2021, a field experiment was carried out at the Lovely Professional University's School of Agriculture in Phagwara, Punjab. The eight treatments in the field experiment were Pendimethalin 1000 ml/ha (PE), Isoproturon 1000 g/ha (PoE), Cladinofop-propargyl 60 g/ha (PoE), Pinoxaden 50 g/ha (PoE), Hand weeding at 60 DAS, Metribuzin 250 g/ha (PE), Weedy Check, and Weed free check. There were eight treatments total: one weedy check, one weed free check, five chemical treatments, and one hand weeding. A 2:1 ratio of wheat to chickpeas was used, with a row-to-row spacing of 30 cm. The largest growth parameters for both wheat and chickpea crops (plant height, dry matter accumulation per plant, chlorophyll index, number of tillers per running meter, CGR, and RGR) as well as the characters that contribute to yield (number of spikelets per spike, spike length, effective tillers per running meter, number of grains per spike, test weight, number of pods per plant, primary and secondary branches, seed index) were found in the treatments of pendimethalin 1000 ml/ha (PE). The wheat crop experienced growth, development, and yield reductions as a result of certain phytotoxic symptoms of metribuzin 250 g/ha (PE). The application of 1000 ml/ha (PE) of pendimethalin also showed the highest harvest index, grain yield, straw yield, and B:C ratio.