Öncan Sümer, Feride. “Improvement of Grain Yield and Protein Ratio in Soybean With Zinc Application”. Turkish Journal of Agriculture - Food Science and Technology 10, no. 11 (November 29, 2022): 2188–2195. Accessed February 21, 2024. https://agrifoodscience.com/index.php/TURJAF/article/view/5449.