Rizk -Alla,, M., Girgis, V., Abd El —- Ghany, A. (2006). 'EFFECT OF FOLIAR APPLICAHON OF MINERAL OR CHELATED CALCIUM AND MAGNESIUM ON THOMPSON SEEDLESS GRAPEVINES GROWN IN A SANDY SOIL: A- Vegetative growth. nutritional status and yield', Journal of Plant Production, 31(5), pp. 3067-3077. doi: 10.21608/jpp.2006.236009