Vol. 11, Issue 5 (2022)

Author(s):
Vishal Vikram Singh, Shrish Kumar Singh, Susheel Kumar Srivastava and Tej Pratap

Abstract:
A field study was carried out during Rabi season of 2019-20 and 2020-2021 at main experiment station (Agronomy) of Pili Kothi Farm, T.D.P.G. College, Jaunpur Dist. Jaunpur (Uttar Pradesh) to study the efficacy of eight herbicide tank mix treatment with weed free and control in managing weed community dominated by dicot weeds and improving the growth and yield of wheat. Total weed density and weed dry weight at 60 days after sowing was recorded minimum with Sulfosulfuron 75% + (Arylex 20.85% + Florasulam 20%) 25 + 12.76 g/ha at 30 DAS followed by Sulfosulfuron 75% + (Arylex 6.95% + Pyroxsulam 25%) 25 + 23.96 g/ha at 30 DAS and considerably better than all other control measures except weed free situation. Highest grain yield of wheat was observed in weed free (4.5 t/ha) and was at par with Sulfosulfuron 75% + (Arylex 20.85% + Florasulam 20%) 25 + 12.76 g/ha (4.4 t/ha) and significantly better than other treatments. All the herbicidal treatments recorded significantly higher grain yield and nutrient uptake by wheat as compared to control treatment. Total nutrient uptake by crop was highest in weed free followed by Sulfosulfuron 75% + (Arylex 20.85% + Florasulam 20%) 25 + 12.76 g/ha at 30 DAS and significantly better to other treatments. From the study it was concluded that use of Sulfosulfuron 75% + (Arylex 20.85% + Florasulam 20%) 25 + 12.76 g/ha at 30 DAS gave highest herbicide efficiency index (HEI) and Clodinafop-propargyl 15% WP + Metsulfuron-methyl 20% WP 60+4 g/ha gave highest weed persistence index (WPI).