Nandhini, D Udhaya, M Thiyagarajan, and E Somasundaram. “Soil Fertility of Rice- Blackgram Cropping Sequence As Influenced by Different Organic Sources of Nutrients”. Bangladesh Journal of Botany 51, no. 2 (June 28, 2022): 289–296. Accessed October 6, 2024. https://banglajol.info/index.php/BJB/article/view/60426.