Onkum, P., and Teamkao, P. “Soil microbial activities in Alfisol with different green manure application”. International Journal of Agricultural Technology 16, no. 2 (March 15, 2020): 319–328. accessed September 11, 2025. https://li04.tci-thaijo.org/index.php/IJAT/article/view/6512.