Assessing Impact of Drip Irrigation and Nitrogen Fertigation Scheduling on Physiological Traits of Winter Wheat (Triticum aestivum L.)

摘要

In order to study physiological traits of winter wheat (Triticum aestivum L.) at different levels of drip irrigation and nitrogen fertigation scheduling, a field experiment was conducted during 2012-13 and 2013-14 at Jain Hi-Tech Agri. Institute, JainIrrigation Systems Ltd., Jalgaon located at western scarcity zone of Maharashtra, India. Physiological traits were measured like LAI, LAD, CGR, RGR and BMD. The results revealed that drip irrigation at 1.0 Epan gave significantly superior performance ofall physiological traits but it was on par with 1.2 Epan and significantly superior over 0.6, 0.8 Epan and surface check basin irrigation at 1.0IW: CPE ratio. Similarly, fertigation of 120 kg N ha 1 significantly improved all physiological traits over lower nitrogen levels in both the years. However, application higher dose of nitrogen (N ) did not showed significant response over N120. Several relationship viz., CGR vs LAI, CGR vs LAD, LAD vs LAI were analyzed at different irrigation and nitrogen fertigation scheduling and regres-sions accounted 99.0%, 98.9%, 99.8% and 96.5%, 98.9%, 99.2% respectively.