Effect of normal sowing time and herbicides on yield attributes and yield of ACCase resistant Phalaris minor in wheat under irrigated conditions

Abstract

A field experiment was conducted in the Rabi season of 2021-22 at Division of Agronomy, SKUAST-Jammu, to evaluate the effect of normal sowing time and herbicides on yield attributes and yield of ACCase resistant Phalaris minor in wheat under irrigated conditions. The experiment was laid out in laid out in split plot design with three replications. The treatments comprised of two factors including 3 sowing window i.e. 5th November, 15th November and 25th November) and nine weed management treatments. The early post emergence herbicide were applied at 25 DAS and post emergence herbicide were applied at 35 DAS to control Phalaris minor. The crop was sown with full dose of P and K along with half N was applied as basal at time of sowing through inorganic sources of nutrient viz. Urea, DAP and MOP, respectively and remaining nitrogen in two split doses. Further, the crop was managed as per regional recommendations of the crop. The results revealed that among normal sowing crop ecologies, wheat crop sown on 5th November sowing window recorded significantly higher yield attributes, grain and straw yield which was statistically at par with 15th November sown wheat crop. Among the various herbicidal treatments, pre-emergence application of Pyroxasulfone @127.5 g ha-1 recorded significantly yield attributes and yield which was statistically at par with the early post emergence application of Pyroxasulfone 127.5 g ha-1, post-emergence application of Pinoxaden 40 g ha-1 and pre-emergence application of Flumioxazin 125 g ha-1. Hence, on the basis of one year study it can be concluded that 5th November sown crop along with pre-emergence application of Pyroxasulfone @127.5 g ha-1 improve the yield of wheat under irrigated conditions.