[1]
S. M. and Sat Pal Saini*, “Evaluation of Nutrient Index using Manganese as a Measure of Fertility Status of Soils under Different Cropping Systems of Punjab in North-Western India”, JISSS, vol. 68, no. 4, Feb. 2021, Accessed: Oct. 20, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/JISSS/article/view/110853