1. Alexandria University, Faculty of Agriculture Saba basha, Department of Soil and Agricultural Chemistry, Alexandria, Egypt
2. Alexandria University, Faculty of Agriculture Saba basha, Department of Agricultural Economics, Alexandria, Egypt
3. College of Agronomy, Jilin Agricultural University, 2888 Xincheng Road, Changchun, Jilin Province, 130118, P.R. China
4. Ondokuz Mayıs University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Samsun, Turkey
5. Alexandria University, Faculty of Agriculture Saba basha, Department of Soil and Agricultural and Chemistry, Alexandria, Egypt