Influence of irrigation schedules based on IW:CPE ratios and herbicidal weed control in isabgul (Plantago ovata Forsk).

Application of isoproturon was most effective for the control of all weeds, which resulted in 99.32%.weed control efficiency and 49.00 % higher mean seed yield over unweeded control. The higher WUE (3.606 kg ha mm) was observed under 0.4 IW:CPE ratio and higher net return (Rs ha 28904) were obtained under the treatment combination (0.4 IW:CPE ratio and application of isoproturon @ 0.5 kg ha as pre-emergence). The interaction effect of irrigation schedule and herbicidal weed control practices was found nonsignificant in some cases.