Depth-Resolved Assessment of Soil Fertility in the Indo-Gangetic Plains: Amhat and Bankepur, Sultanpur, with a Focus on N, P, K, and S. Int J Sci Res Sci & Technol [Internet]. 2025 Sep. 20 [cited 2026 Feb. 28];12(5):156-67. Available from: https://mail.ijsrst.com/index.php/home/article/view/IJSRST25125117