| How to cite this article:
Magdi. T. Abdelhamid, E.M. Selim and A.M. EL-Ghamry, 2011. Integrated Effects of Bio and Mineral Fertilizers and Humic Substances on Growth, Yield and Nutrient Contents of Fertigated Cowpea (Vigna unguiculata L.) Grown on Sandy Soils. Journal of Agronomy, 10: 34-39.