1. Department of Soil Science, College of Food and Agricultural Sciences, King Saud University, P.O. Box-2460, Riyadh 11451, Saudi Arabia
2. Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
3. Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
4. Field Crops Research Institute, Agricultural Research Center, Giza 12619, Egypt