SINGH AK, TRIPATHI P, MISHRA SR. Phenology, growing degree-days and phasic development model of wheat (Triticum aestivum) under rice (Oryza sativa )-wheat cropping system. Indian J Agri Sci. 2014;71(6). Accessed October 26, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/39877