Nogueira, O. L.; Paiva, J. B.; Crisóstomo, L. A. Micronutrients Deficiencies and Aluminum and Manganese Toxicity in Cowpea - II - Plant Growth and Chemical Composition. PAB 2014, 17 (5), 663-669. https://doi.org/10.1590/S1678-3921.pab1982.v17.15847.