The Role of Potassium in Improving Growth Indices and Increasing Amount of Grain Nutrient Elements of Wheat Cultivars ., M. A. Bahmanyar ; ., G. A. Ranjbar Abstract Publication: Journal of Applied Sciences Pub Date: July 2008 DOI: 10.3923/jas.2008.1280.1285 Bibcode: 2008JApSc...8.1280.