Al-Nomair عع, Al-Haddi عم. The Effect of Different Levels of Potassium Fertilizer on Growth and Productivity of Arabica Coffee (Coffea Arabica L.) in Ibb City. Univ. Aden J. Nat. and Appl. Sc. [Internet]. 2025 Dec. 21 [cited 2026 Jan. 31];29(1):11-8. Available from: https://uajnas.adenuniv.com/index.php/uajnas/article/view/403