Hassan HH, Huthily KH, Mohsen KH. Effect of Humic Acid and Silicon on some Growth Characteristics of Maize (Zea mays L.). Basrah J. Agric. Sci. [Internet]. 2019 Nov. 14 [cited 2024 Apr. 20];32(2):23-32. Available from: https://bjas.bajas.edu.iq/index.php/bjas/article/view/106