SINGH MK, PAL SK, THAKUR R, VERMA UN. Integrated nutrient energy management for sustainability in maize (Zea mays) - wheat (Triticum aestivum) cropping system. Indian J Agri Sci. 2013;68(12). Accessed October 28, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/27834