SHUKLA, S K, and MENHILAL MENHILAL. “Competition Functions and Productivity in Sugarcane-Based Associative and Successive Cropping Systems in Relation to Nitrogen and Sulphur Nutrition”. The Indian Journal of Agricultural Sciences 72, no. 6 (May 19, 2014). Accessed October 27, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/40881.