VAZIN, F., HASSANZADEHDELOUEI, M., & KHERADMAND, M. (2011). Effect of Defoliation and Fe and Mn Spraying on Quality and Quantity Characteristics of Sunflower (Helianthus annuus L.). Notulae Scientia Biologicae, 3(3), 113–119. https://doi.org/10.15835/nsb336225