D. K. PARMAR and V. SHARMA, “Nitrogen requirement of single hybrid maize (Zea mays) - wheat (Triticum aestivum) system under rainfed conditions”, Indian J Agri Sci, vol. 71, no. 4, Apr. 2014, Accessed: Oct. 23, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/39723