S. Rajendiran, M. L. Dotaniya, and M. V. Coumar, “Paradigm shift in soil fertility ratings for sustainable crop production and environmental quality”, Ind. Farming, vol. 70, no. 3, Sep. 2020, Accessed: Aug. 07, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/IndFarm/article/view/105423