Effect of Sulfur and Potassium Fertilizers on Yield and Yield Components of Saffron (Crocus Sativus L.) in Kermanshah

This study was conducted to investigate the effect of application of sulfur and potassium fertilizers on yield and yield components of saffron in the crop year 2018 in Kermanshah region. The experiment was performed as a factorial based on a randomized complete block design with three replications. Experimental treatments included potassium fertilizer (potassium sulfate) at four levels (0, 50, 75 and 100 kg / ha) and sulfur fertilizer (granular) at four levels (0, 100, 150 and 200 kg / ha). The traits studied in this experiment included: number of flowers per square meter, fresh flower weight, stigma length, style length, stigma and style length assembly, stigma weight, style weight, leaf fresh weight and leaf dry weight. The results showed that the consumption of sulfur and potassium had a significant effect on the quantitative characteristics of saffron. The highest number of flowers per unit area, fresh flower weight, leaf fresh weight and leaf dry weight were obtained in the treatment of 200 kg / ha of sulfur fertilizer. Also, the study of the role of potassium showed that the highest fresh weight of flowers was observed in the application of 100 kg of potassium. Interaction of 200 kg of sulfur with 100 kg of potassium produced the highest amount of stigma length, style length, stigma dry weight and style dry weight.