Citrus Scab

Pathogen :

[ fungus ] Elsinoe fawcettii

Symptoms :

Leaf & fruit –  young foliar lesions superficially resemble young citrus canker, may have a slight water soaked margin.  

As pustules develop, the small elevated pink spots become more defined and may form conical depressions nearby.  

When pustules mature, they become warty and crack.  

Scab pustules colour may progress to yellowish brown and eventually to a dirty grey.

Prevention and Control :

Citrus scab can be controlled using resistant cultivars, and by fungicide application.