KATYAL, V; GANGWAR, B. Long-term effect of integrated nutrient management on crop productivity of rice (Oryza sativa) -rice system*. The Indian Journal of Agricultural Sciences, Delhi, India, v. 70, n. 2, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/28049. Acesso em: 28 oct. 2025.