New mechanized system for circle spraying of oil palms seedling emergence . Scientia Agricola, [S. l.], v. 69, n. 2, p. 95–102, 2012. DOI: 10.1590/S0103-90162012000200002. Disponível em: https://www.revistas.usp.br/sa/article/view/22752.. Acesso em: 2 may. 2024.