“Effect of Spraying Potassium Silicate, Boron and Vitamin C on Levels of Antioxidant Enzymes and Phytohormones in the Black French grape                              Vitis Vinifera L”. Euphrates Journal of Agricultural Science, vol. 15, no. 4, Dec. 2023, pp. 306-20, https://ejs-agri.com/index.php/EJAS/article/view/178.