SHUKLA, ARVIND K; SINGH, V K; DWIVEDI, B S; SHARMA, S K; SINGH, YOGENDRA. Nitrogen use efficiencies using leaf colour chart in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system. The Indian Journal of Agricultural Sciences, Delhi, India, v. 76, n. 11, 2011. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/3259. Acesso em: 27 oct. 2025.