Nitrogen sources and defoliation levels in cowpea bean. Research, Society and Development, [S. l.], v. 13, n. 8, p. e2013846437, 2024. DOI: 10.33448/rsd-v13i8.46437. Disponível em: https://www.rsdjournal.org/rsd/article/view/46437. Acesso em: 1 mar. 2026.