Effect of Different Herbicides on Weed Management, Crop Growth and Yield of Soybean

To assess the performance of several PPI combination herbicides during the 2019 Kharif season, a field experiment was carried out at the Product Testing Unit, Department of Agronomy, JNKVV, Jabalpur (M.P.). Proper contact of herbicide with weeds is very difficult in case of post emergence application in soybean due to quick cover of ground and attaining the proper height. Post-emergence herbicides like chlorimuron, and phenoxaprop-p-ethyl are being used by the farmers from quite long time. Herbicides combinations are more effective weaponsin talkingweed menace and thereby nutrient depletion by them than a single herbicide approach. The use of herbicides, particularly as pre plant-incorporation may check the emergence of weeds in early stage and create weed free environment. Three replications of the field studies using the Randomized Block Design (RBD) with eleven treatments were conducted. The results showed that applying Diclosulam 0.9% + Pendimethalin 35% SE 22.5 + 875 g ha-1 as PPI significantly surpassed other herbicide mixtures in terms of weed index (12%), WCE (77.69%), except for T4 (81.00%), growth and yield attributes such as number of branches plant-1 (4.07), root nodules plant-1 (69.00), pods plant-1(50.33), seeds pod-1 (2.67) as well as seed index (10.03). Whereas, highest seed as well stover yield was found superior underDiclosulam 0.9% + Pendimethalin 35% SE 22.5 + 875 g ha-1.