Research Article
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
Department of Botany National Research Centre, Dokki 12622, Cairo, Egypt
E. M. Selim
Department of Soils and Water Use, National Research Centre, Dokki 12622, Cairo, Egypt
A. M. EL-Ghamry
Department of Soils, Faculty of Agriculture, Mansoura University, Mansoura, Egypt