Direct and interactive effect of boron and nitrogen on selected agronomic parameters and nutrient uptake by cowpea [Vigna unguiculata (L.) Walp.] under glasshouse conditions. Tropical Agriculture, [S. l.], v. 68, n. 4, 1991. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/1721. Acesso em: 25 apr. 2025.