Soil exchangeable cations and acidity components in different cropping systems for onion. JOURNAL OF ADVANCES IN AGRICULTURE, [S. l.], v. 13, p. 8–14, 2022. DOI: 10.24297/jaa.v13i.9297. Disponível em: https://rajpub.com/index.php/jaa/article/view/9297. Acesso em: 22 jun. 2026.