Effect of Irrigation Scheduling and Thiourea on Nutrient Concentration, Uptake and Water Use Efficiency of Mustard

To know the effect of irrigation scheduling and foliar application of thiourea on nutrient concentration, uptake and water use efficiency of mustard, an experiment was conducted at Agronomy Farm, SKN College of Agriculture, Jobner during winter season of 2019-20. The experiment consisted five treatments of scheduling of irrigation (Surface irrigation, sprinkler, drip irrigation at 0.4 IW/CPE ratio, 0.6 IW/CPW ratio and 0.8 IW/CPE ratio, respectively) and three levels of foliar application of thiourea (Control, thiourea @ 500 ppm and thiourea @ 750 ppm). The experiment was laid out in split plot design with three replications. The results revealed that drip irrigation at 0.6 IW/CPE ratio recorded significantly higher nitrogen, phosphorus, sulfur concentration and their uptake in mustard, water use efficiency as well as protein content as compared to surface irrigation, sprinkler and drip irrigation at 0.4 IW/CPE ratio. The thiourea @ 500 ppm recorded significantly higher nitrogen, phosphorus and sulfur concentration and their uptake in mustard, protein and oil yield of mustard, water use efficiency. Based on the above findings, drip irrigation at 0.6 IW/CPE ratio with foliar application of thiourea @ 500 ppm could be recommended to farmers of mustard in Rajasthan.