Effect of solid waste compost and urea fertilizer on yield and yield components of safflower

This study was conducted in Islamic Azad University, Shirvan branch during the growing year in 2012-2013 to determine the effect of solid waste compostand urea fertilizer in different levels of irrigation on yield and yield components of safflower. The solid waste compost treatments consisted of 5, 10, 15 and 20 t/h and urea fertilizer at the rate of 200 kg/h. Irrigation treatments consist of irrigation at planting, at planting + stem elongation and at planting+ stem elongation + flowering. The experiment was conducted in split plot based on randomized complete block design with three replications. Irrigation and fertilizer treatments were conducted in main plot and sub-plot, respectively. The highest plant height that was equal with 96.8 cm observed in application of 15 t/h solid waste compost with irrigation at planting+ stem elongation stages, that 14% was more than urea fertilizer treatment. The highest number of capitol per plant observed in two irrigation at planting+ stem elongation with application of 5 t/h solid waste compost that was 20% more than urea fertilizer treatment. The highest seed yield belonged to application of 5 t/h solid waste compost with two irrigation at planting + stem elongation stages that was 14% more than urea fertilizer treatment. Therefore according to results of this experiment two irrigation at planting and stem elongation stages and application of 5 t/h solid waste compost are advisable for safflower suitable seed yield production.