A. K. SHINDE, S. P. BIRARI, and B. B. JADHAV, “Effect of potassium nitrate and urea on growth and yield of cowpea (Vigna unguiculata)”, Indian J Agri Sci, vol. 64, no. 7, Apr. 2013, Accessed: Oct. 23, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/29326