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:Swollen shoot disease of cocoa is caused by?Which of the following diseases of citrus has the…Gummosis is caused by a?The pox disease in livestock are caused by?Newcastle disease is caused by?