Effect of herbicides to control weeds in wheat

Field experiments was conducted to study the effect of weed control methods on wheat (Triticum aestivum L.) during Rabi seasons of 2014–15 and 15–16 at Agronomy Research Farm of NDUAT, Kumarganj, Ayodhya (U.P.). Preemergence application of pendimethalin + metribuzin (1.0 + 0.175 kg/ha) being at par with weed free and pendimethalin (1.0 kg/ha) followed by sulfosulfuron (0.025 kg/ha) significantly reduced the density of weeds as compared to other treatments. Pre-emergence application of pendimethalin + metribuzin (1.0 + 0.175 kg/ha) significantly increased all growth and yield contributing characters, viz. plant height, dry matter accumulation, spikelength, grains/spike obtained with weed free. Among different herbicidal treatments, maximum grain and straw yields were recorded under pendimethalin + metribuzin (1.0 + 0.175 kg/ha) (4.22 and 5.70 t/ha, respectively). However, the highest benefit: cost ratio was recorded in weed free (1.97) followed by pendimethalin + metribuzin (1.0 + 0.175 kg/ha) (1.91).