Duhan, Kiran, DS, MK Rana, Harshita Singh, and Makhan Mazoka. “Effect of Phosphorus and Zinc on Plant Growth and Yield of Vegetable Cowpea”. Vegetable Science 45, no. 01 (June 30, 2018): 55–60. Accessed April 14, 2026. https://www.isvsvegsci.in/index.php/vegetable/article/view/308.