BRAR, B S; SINGH, Jagdeep; BENIPAL, D S. Improving soil fertility in maize-wheat and rice-wheat cropping systems. Indian Farming, Delhi, India, v. 62, n. 11, 2015. Disponível em: https://epubs.icar.org.in/index.php/IndFarm/article/view/52932. Acesso em: 26 oct. 2025.