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?Citrus is usually propagated by?The disease of citrus described above is?Gummosis is caused by a?Foot and mouth disease in sheep is caused by a?