Tripathi, A., Tripathi, H., & Kumar, M. (2022). . Soil Fertility and Crop Productivity as Influenced by Different Cropping Systems and Levels of Nitrogen in Central Plain Zone of Uttar Pradesh . Journal of Soil and Water Conservation, 3(3 & 4). https://epubs.icar.org.in/index.php/JSWC/article/view/130992