Simon Johnson, and Rio Martinez. “Enhancing Urea Metabolism and Stress Tolerance in Tomato Through Foliar Nickel Application”. American Journal Of Agriculture And Horticulture Innovations 5, no. 05 (May 1, 2025): 1–5. Accessed July 17, 2025. https://www.theusajournals.com/index.php/ajahi/article/view/5370.