EFFECTS OF COPPER ON THE DEVELOPMENT AND YIELD OF COWPEA BEAN GRAINS IN OXISOL. REVISTA DE AGRICULTURA NEOTROPICAL, [S. l.], v. 9, n. 3, p. e6845, 2022. DOI: 10.32404/rean.v9i3.6845. Disponível em: https://periodicosonline.uems.br/agrineo/article/view/6845. Acesso em: 9 apr. 2026.