Singh, Harsimranjeet, and Harpreet Kaur. “Effect of NPK Fertilizers on Growth and Quality of Tomato (Solanum Lycopersicum L.) Under Heavy Clay Soils of Patiala”. International Journal of Economic Plants 9, no. Aug, 3 (August 25, 2022): 231–234. Accessed September 14, 2025. https://ojs.pphouse.org/index.php/IJEP/article/view/4743.