Effect of carfentrazone-ethyl on weed flora, growth and productivity in wheat
Vinay Sahu, ML Kewat, Badal Verma, Richa Singh, AK Jha, M.P. Sahu, Muskan Porwal
Abstract
A field experiment was conducted at the Research Farm, Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (M.P.) during Rabi 2020–21 to assess the efficacy of different doses of carfentrazone-ethyl against complex weed flora in wheat. The experimental field was infested with Medicago denticulate (28.97%), Melilotus indica (27.02%), and Cichorium intybus (14.82%). However, other weeds like Anagallis arvensis, Chenopodium album, Convolvulus arvensis and Phalaris minor were also found to be associated in lesser numbers during the study. Application of herbicides significantly reduced the weed population and dry weight of weeds compared to weedy check at 60 DAS. Carfentrazone-ethyl at different doses provides better weed control than 2,4-D amine. Significant variation in wheat yield was recorded due to the application of different herbicides compared with the control. The number of tillers/m2 (382), grains/earhead (53) and grain yield (5.3 t/ha) were significantly higher with carfentrazone at 40 g/ha followed by carfentrazone at 24 g/ha. Also, there were no symptoms of phytotoxicity in the crop.