Effect of New Generation Herbicides on Weed Dynamics and Yield of Chickpea (Cicer arietinum L.)

The present research was conducted to study the differential doses and time applications of topramezone on weed dynamics and yield of chickpea (Cicer arietinum L.) at agronomical research farm of Trihut College of Agriculture, Dholi, Muzaffarpur (Bihar), during the rabi 2022-23. The experiment was carried out in an RBD design with three replications and twelve treatments: Pre-emergence (PE) application of oxyfluorfen (150 & 250 g/ha), post-emergence (PoE) application quizalofop-p-ethyl, propaquizafop (each 100 g/ha at 20 DAS), topramezone 20.6 g/ha (14 & 21 DAS) and 25.7 g/ha (21 DAS) applied. Among pre + post emergence applications oxyfluorfen (150 g/ha) fb quizalofop-p-ethyl (100 g/ha at 15-20 DAS), oxyfluorfen followed by propaquizafop (100 g/ha at 20 DAS) and oxyfluorfen fb topramezone (20.6 g/ha at 21 DAS) applied, along with the weed-free control (WFC) and weedy check. Among all the herbicidal treatments, the combination of oxyfluorfen at 150 g/ha followed by topramezone at 20.6 g/ha at 21 DAS (pre + post-emergence) recorded lowest weed dry matter and highest weed control efficiency (WCE) and crop yield.