Effect of different source and amount of potassium on seed yield and protein of wheat in Mazandaran provice

This research designed to investigate the effects of potassium sulfate and potassium chloride to enhance performance and grain protein content of wheat in soils of Mazandaran. The experiment was conducted in Qrakhyl Ghaemshahr to determine good source and levels of potassium on qualitative and quantitative performance of wheat in 1389. Experiment was performed as factorial in a randomized complete block design. Treatments were different amount of potassium fertilizer (100 and 200 and 300) as K2O kg per hectare and a control treatment. The other treatments were two types of potassium fertilizers (Potassium sulfate، potassium chloride). Initial analysis of the results showed significant differences on grain yield at 1% probability level، but the other factors have not significant difference between fertilizers sources. Also the highest protein content obtained (9/14) in 300 kg potassium chloride per hectare.