Description:A fungal disease of Apples that initially shows as 3 mm diameter spots on the leaves that are darker green and soon turn black. The spots may join to form black patches and in severe cases the leaves may be small and distorted. Black spots also form on the fruit and go brown and corky with age and are usually raised and round with irregular margins. These lesions are often only surface blemishes but with early infection they may crack and distort the fruit.
Species Affected:Apples. Granny Smith and Delicious varieties are very susceptible. Jonathon and Gravenstein are more tolerant.
Biology:Spread by raindrop splash.
Life Cycle:Origin and History:
Related and Similar Species:References: