LAXMINARAYANA, K. Predicting nitrogen availability for rice (Oryza sativa) through carbon-nitrogen relationship under Himalayan acidic soils of north-eastern India. The Indian Journal of Agricultural Sciences, Delhi, India, v. 78, n. 7, 2008. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/9826. Acesso em: 27 oct. 2025.