Nayak RK, Shivhare S, Jena B, et al. Georeferenced distribution of micro-secondary nutrients in soils of north central plateau zone of Odisha and identification of soil related production constraints in paddy. ORYZA. 2016;53(3). Accessed October 20, 2025. http://epubs.icar.org.in/index.php/OIJR/article/view/71204