SINGH, Y. V.; SHARMA, S. K. Available nitrogen and methane emission from soils amended with organic manures and urea in rice-wheat system. Journal of Soil and Water Conservation, India, v. 18, n. 3, 2019. Disponível em: https://epubs.icar.org.in/index.php/JSWC/article/view/107668. Acesso em: 3 jul. 2026.