Influence of Irrigation Scheduling on Weeds among Different Sowing Dates in Wheat under Vertisol
Mrinali Gajbhiye *
Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh, 482004, India.
Manish Bhan
Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh, 482004, India.
K. K. Agrawal
Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh, 482004, India.
Narendra Kumar
Department of Agronomy, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, 474002, India.
*Author to whom correspondence should be addressed.
Abstract
Wheat is an important cereal grain crop and is staple to millions. Weeds are the major constraint that lower the wheat yield. The knowledge of weeds under different sowing dates and Irrigation can assist in controlling weeds. A field experiment was conducted during the rabi season of 2020-21 at Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, M.P. to study the influence of irrigation scheduling on weeds at different sowing dates in wheat. The experiment was laid out in split-plot design with three replications. The main plot consisted of three sowing dates, i.e., 3rd December, 18th December and 2nd January and four Irrigation Water/Cumulative Pan Evaporation (IW/CPE) based irrigation scheduling, 1.0, 0.9, 0.8 and 0.7 in the sub-plots. The results revealed that lowest weed density and dry weight were observed in 2nd January sown date, as compared to 3rd December and 18th December sown date. Among the irrigation schedules, 0.7 IW/CPE observed lowest weed density and dry weight than 1.0, 0.9, 0.8 IW/CPE ratio. 3rd December sown date exhibited highest grain yield (4637 kg ha-1) and straw yield (6788 kg ha-1) than 18th December and 2nd January sown date. Among the irrigation schedules, 1.0 IW/CPE ratio exhibited maximum grain yield (4510 kg ha-1) than 0.9, 0.8 and 0.7 IW/CPE ratio. The results of the study concludes that sowing dates and irrigation schedules had crucial role for controlling weeds.
Keywords: IW/CPE ratio, sowing date, weed density and dry weight
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References
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