AHMOOD KHALEFAHM, K.; MUJIL AWAD AL-NAMRAWI, A. The Effect K Fertilization, Zn Foliar application and gypsum Soil Content on nutrients by corn (Zea mays L.). College of Basic Education Research Journal, [S. l.], v. 16, n. 4, p. 1019–1040, 2020. DOI: 10.33899/berj.2020.167259. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/38504. Acesso em: 27 oct. 2025.