Singh, J.P. and Srivastava, O.P. (2012) “Role and requirement of sulphur in growth and tuber yield of potato (Solanum tuberosum)”, The Indian Journal of Agricultural Sciences, 65(4). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/18231 (Accessed: 26 October 2025).