CRUZ, Anna Bárbara de Souza et al. Effect of the use of pre- and post-emergence herbicides on nodulation and production of cowpea (Vigna unguiculata L.) in the Amazonian savannah. Agron. colomb. [online]. 2020, vol.38, n.2, pp.280-286.  Epub 27-Abr-2021. ISSN 0120-9965.