شيخ سليمان نصر, عثمان جنان, and حمد ديانا. “Effect of Foliar Spraying With Yeast Extract and Boron on Growth and Yield of Potato Solanum Tuberosum cv.Spunta”. Tishreen University Journal -Biological Sciences Series 43, no. 6 (January 18, 2022): 291–304. Accessed May 7, 2024. https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/11591.