CHANDEL, R. S., SUDHAKAR, P. C., & SINGH, K. (2014). Direct and residual effect of sulphur on indian mustard (Brassica juncea) in rice (Oryza sativa)-indian mustard cropping systerm*. The Indian Journal of Agricultural Sciences, 72(4). https://epubs.icar.org.in/index.php/IJAgS/article/view/40802