SINGH S, SINGH KP, SARKAR AK, SINGH SK. Response of Indian mustard (Brassica juncea) and blackgram (Phaseolus mungo) grown in rotation to sulphur fertilization in acid soil. Indian J Agri Sci. 2013;68(7). Accessed October 23, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/27597