“Effect of Foliar Fertilization with a Mixture of Microelements and Yeast Extract on some Qualitative, Productive Properties of Grapevine (C.V. Al-Helwani)” (2022) Journal of Hama University, 5(17). Available at: https://journal.hama-univ.edu.sy/huj/article/view/1000 (Accessed: 6 June 2026).