Supsuan, P., Surin, P. and Yampracha, S. (2018) “Effects of organic fertilizer application on the transformation of nitrogen in paddy soil ”, International Journal of Agricultural Technology, 14(7), pp. 1999–2014. available at: https://li04.tci-thaijo.org/index.php/IJAT/article/view/10283 (accessed: 24 September 2026).