Diagnosing P deficiency in black gram [Vigna mungo (L.) Hepper] by plant analysis and soil testing: Diagnostic norms. Tropical Agriculture, [S. l.], v. 70, n. 2, 1993. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/7081. Acesso em: 26 apr. 2025.