V.R.Nair, Rekha, and Usha Mathew. “Formulation of Multi Micronutrient Fertilizer for Mature Rubber Plantation”. Journal of Tropical Agriculture 62, no. 1 (July 27, 2024): 105–110. Accessed November 21, 2024. https://jtropag.kau.in/index.php/ojs2/article/view/1448.