Mycologia, ASCOMYCOTINA, DOTHIDEALES, VENTURIACEAE .
Identification, Description, Biology, Epidemiology, Treatement, Possible misleading, Images
On the lower surface of leaves olive-brownish velvety lesions occur as well as on fruits.
Under severe attack during the growth of the fruit this one is distorted, torn and becomes unmarketable.
Under the cortex of the twigs stromas occur which swell and break open the cortex showing greenish little cushions.
Cankered twigs cause the death of buds in the following spring.
Perithecia occur at the end of autumn on dead rotten leaves on the ground. They are mature the following spring when they release the ascospores.
The olive-green spots on the different parts of the plant are the stromas which produce conidia.
Dew is very favourable to infection.
Before blossoming apply cupric sprays in cultivars which are not affected by copper.
HYP3 on line : Species (scientific name), Diseases (common names), Glossary, Crops.