Mustafa Al-Hadi Al-Saadi, Abdullah Abdulsalam Al-Hajin and Mohamed Dulayoum 2026. Evaluation of the Effectiveness of Olive Leaf Extract as a Natural Insecticide for the Control of Olive Psyllid (Euphyllura olivina). African Journal of Advanced Pure and Applied Sciences . 5, 2 (Jun. 2026), 414–418.