Soil enzyme activities under pig slurry addition and different tillage systems - doi: 10.4025/actasciagron.v33i4.9816. Acta Scientiarum. Agronomy, [S. l.], v. 33, n. 4, p. 729–737, 2011. DOI: 10.4025/actasciagron.v33i4.9816. Disponível em: https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/9816. Acesso em: 1 jun. 2026.