Prasad R, Newaj R, Singh R, et al. Soil quality index (SQI) for assessing soil health of agroforestry system: Effect of Hardwickia binata Roxb. tree density on SQI in Bundelkhand, central India. Indian J. Agroforest. 2020;19(2). Accessed June 27, 2026. https://epubs.icar.org.in/index.php/IJA/article/view/102921