SINGH, KALYAN, E YOSHIMURA, K KANAZAWA, P C SUDHAKAR, and S MORI. “Effect of Organic Acid Ligands on Nutrient Mobilization from Volcanic Acid Soils”. The Indian Journal of Agricultural Sciences 71, no. 12 (May 8, 2014). Accessed October 24, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/40509.