“Cumulative Impact of Crop Stand and Foliar Urea on Traits of Importance in Sunflower (Helianthus AnnusL”. Sindh University Research Journal - SURJ (Science Series) 49, no. 4 (May 12, 2020). Accessed November 14, 2026. https://sujo.usindh.edu.pk/index.php/SURJ/article/view/1685.