[1]
A. K. SHUKLA, V. K. SINGH, B. S. DWIVEDI, S. K. SHARMA, and Y. SINGH, “Nitrogen use efficiencies using leaf colour chart in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system”, Indian J Agri Sci, vol. 76, no. 11, Jan. 2011, Accessed: Oct. 27, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/3259