Gummosis disease of citrus is caused by? by Sunday | Jul 4 | Agricultural Science WAEC | 0 comments A. aphids B. fungi C. white flies D. bacteria Correct Answer: Option B – fungi Users Also Read These:Newcastle disease is caused by?Streak disease of maize is caused by?The pox disease in livestock are caused by?Which of the following disease is caused by a bacterium?Citrus is usually propagated by?