Modhej, A., Naderi, A., Emam, Y., Aynehband, A. and Normohamadi, Gh. (2008) Effects of post-anthesis heat stress and nitrogen levels on grain yield in wheat (T. durum and T. aestivum) genotypes. International Journal of Plant Production, 2, 257-267.
 Abdzad Gohari, A. and Amiri, E. (2010) Increase of bean production in iron and nitrogen fertilization in sustainable agriculture. First National Congress of Sustainable Agriculture and Health Crop Production, Isfahan, 230-236.
 Umer, S., Bansal, S.K., Imas, P. and Magen, H. (1999) Effect of foliar fertilization of potassium on yield, quality and nutrient uptake of groundnut. Journal of Plant Nutrition, 22, 1785-1795. doi:10.1080/01904169909365754
 Mahady, A.E.M. (1990) Effect of phosphorus fertilizer, some micronutrients and plant density on growth and yield of broad beans. Ph.D. Thesis, Faculty of Agriculture, Moshtohor, Zagazig University, Egypt.
 Ali, A.A.G. and Mowafy, S.A.E. (2003) Effect of different levels of potassium and phosphorus fertilizers with the foliar application of zinc and boron on peanut in sandy soils. Zagazig Journal of Agricultural Research, 30, 335-358.
 Thalooth, A.T., Badr, N.M. and Mohamed, M.H. (2005) Effect of foliar spraying with Zn and different levels of Phosphatic fertilizer on growth and yield of sunflower plants grown under saline condition. Egypt. J. Agron., 27, 11-22.
 Valencianoa J.B., Miguélez-Fradeb, M.M., Marcelob, V. and Reinoso, B. (2007) Response of irrigated common bean (Phaseolus vulgaris) yield to foliar zinc application in Spain. New Zealand Journal of Crop and Horticultural Science, 35, 325-330. doi:10.1080/01140670709510198
 Agrawal, V.K., Dwivedi, S.K. and Patal, R.S. (1996) Effect of phosphorus and zinc application on morphological strurctural yield components and seed yield in soybean. Crop Research Hisar, 12, 196-199.
 Togay, N., Ciftci, V. and Togay, Y. (2004) the effects of zinc fertilization on yield and some yield components of dry bean (phaseolus vulgaris L.). Asian Journal of Plant Sciences, 3, 701-704. doi:10.3923/ajps.2004.701.704
 Geetha, V. and Varughese, K. (2001) Response of vegetable cowpea to nitrogen and potassium under varying methods of irrigation. College of Agriculture, Vellayani 695522, Trivandrum, India, Journal of Tropical Agriculture, 39, 111-113.
 Mirjana, J., Zdravkovic, M., Simonida, D. and Damjanovic, M. (2006) Response of beans to inoculation and fertilizers. Annals of the Faculty of Engineering Hunedoara, 5, Revolutiei, 331128, Hunedoara.
 Abdzad Gohari, A., Amiri, E., Porrahm Gohari, M. and Bahari, B. (2010) Nitrogen and potassium fertilizer management on yield and yield components of bean in sustainable agriculture condition. First national congress of sustainable agriculture and health crop production. Isfahan, Iran, 246-250.
 Tsai, S.M., Bonetti, R., Agbala, S.M. and Rossetto, R. (1993) Minimizing the effect of mineral nitrogen on biological nitrogen fixation in common bean by increasing nutrient levels. Plant and Soil, 152, 131-138. doi:10.1007/BF00016342