potasiumsnap bean
Shehata, S. A., H. A. Hassan, G. A. Bkeer, and H. A. Hassan,
"Effect of irrigation methods and potasium fertilizer levels on growth, yield and its quality of snap bean (Phaseolus vulgaris L.)",
Annals of Agric. Sc., Moshtohor, ., vol. 1, issue 42, pp. 225-238, 2004.
