“Impact of Foliar Spraying of 5-Aminolevulinic Acid and Nano-Zinc Oxide on Leaf Chemical Composition and Pigment Content of Dwarf Bougainvillea ’Jewel Pink’”. Euphrates journal of agricultural science 18, no. 3 (September 30, 2026). Accessed October 31, 2026. https://ejs-agri.com/index.php/EJAS/article/view/317.