Investigation sugarcane (Saccharum officinarum L.) yeild reaction to different resources of potassium fertilizers

Considering the important physiological role of potassium and high demand of sugarcane to this element, lack of using potassium fertilizers during past years and severe depletion of soil under cultivation, this research was carried out with the aim of investigating the effect of potassium fertilizers on sugarcane yield changes in Khouzestan province. According to this, an experiment as complete randomized blocks with 6 treatments and 4 replications was conducted at two regions of Karoun and Haft-Tappeh Agro-Industries on CP48-103 cultivar. The treatments included the first treatment control without potassium consumption the second, third and fourth treatments including 200 kg K2O consumption as base from resourses potassium sulfate, potassium nitrate and potassium chloride resourse, respectively, the fifth treatment 200 kg K2O consumption as one fourth split during early planting and the rest of potassium fertilizer along with nitrogen fertilizer consumption three times from potassium nitrate resourse and the sixth treatment 200 kg K2O consumption as one fourth split during early planting and the rest of potassium fertilizer along with nitrogen fertilizer consumption three times from potassium chloride. The results showed there was no significant difference between the fertilizer treatments at Haft-Tappeh region, but, in Karoun region because of more favorable soil conditions as regard to potassium (less depletion), significant difference at p