SINGH, V.K. and KUMAR, V. (2013) “Delineation of sulphur deficiencies in Trans-Gangetic Plain and on-farm sulphur management for higher productivity and profits in rice (Oryza sativa)-wheat (Triticum aestivum) system”, The Indian Journal of Agricultural Sciences, 83(12). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/35956 (Accessed: 26 October 2025).