Birendra Kumar, S.K. Choudhary, Santosh Kumar, Prakash Singh, Jyotimala Sahu and Rajesh Kumar
Abstract
Field experiment was conducted to find out the evaluation of herbicide doses and application time of topramezone on different chickpea varieties during rabi season of 2020-21 at research farm of Bihar Agricultural University, Sabour, Bhagalpur (Bihar) tested in sub sub-plot design (SSPD) revealed that the GCP 105 verities of chickpea at the 25 DAS, i.e. post-emergence with the doses of 25 g/ha topramezone herbicide effectively controlled all the weed in chickpea and recorded significantly high plant height (cm), dry matter accumulation g/m2, number of pods/plant, 100 seed weight (g), haulm yield (Rs. 2.35, 2.29, 2.45 t/ha), grain yield (1.62, 1.66 1.81 t/ ha) and net return (64620, 66326, 72293 ha-1) respectively.