A. M. AL-DOORI, S. Effect of Different Levels and Timing of Zinc Foliar Application on Growth, Yield and Quality of Sunflower Genotypes (Helianthus annuus L., Compositae. College of Basic Education Research Journal, [S. l.], v. 13, n. 1, p. 907–922, 2014. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/39527. Acesso em: 27 oct. 2025.