A common disease of onion is? By: Sunday|Published on: Jul 5|Categories: Agricultural Science WAEC| 0 comments A. leaf spot B. root knot C. leaf blight D. twister E. mosaic Correct Answer: Option E – mosaic Users Also Read These:Which is NOT a viral disease?Which of the following is a liver disease?Which of the following disease is caused by a bacterium?State the level of organisation of each of the…A pandemic is an outbreak of disease that?SEE ALSO In which of the following systems of poultry management can the spread of diseases be kept to a minimum?