Studies on herbicide residual effect on yield parameters of cotton (Gossypium hirsutum L.) - chickpea (Cicer arietinum L.) cropping sequence

A field investigation was undertaken at cotton research scheme farm, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S) during 2018-19 and 2019-20 under irrigated condition (drip) to study the herbicide residue effect on yield parameters in succeeding chickpea crop. The experiment was laid out in a randomized block design with seven treatments in three replications. Chickpea was sown on the same field after harvesting of cotton without disturbing the design without practicing any weed control methods. Significant residual effect of different herbicides were observed on yield parameters of succeeding crop. The yield attributes viz., pods plant-1, seed pod-1 and grain pod-1 were differentially influenced by residual effect of weed management during both the years of study. The pooled results revealed that POE pyrithiobac sodium @ 62.5 g ai/ha + quizalofop ethyl @ 50 g ai/ha at 30 DAS followed by one hand weeding at 60 DAS recorded the highest grain yield (1912 kg ha-1), biological yield (4479 kg ha-1) and harvest index (42.68%).