Sooty blotch and fly speck are two distinct diseases of apple, but usually occur together. The fungi cause a discolouration or blemish on near-mature fruit in the orchard. The blemish is superficial and downgrades the fruit and hence reduces the market …
Both sooty blotch and fly speck have a wide host range of forest and hedgerow trees and shrubs, especially blackberry. The diseases also occur on pear and on …
All apple varieties are susceptible to infection, but the diseases are usually more severe on yellow or light-coloured varieties such as Golden Delicious, Cox and Fiesta Several of the scab-resistant varieties, such as Edward Seventh, can be badly …
Sooty blotch and fly speck are two of the most common diseases of apple in many temperate areas of the world. In the UK they probably occur unnoticed in most apple orchards and …
In the orchard sooty blotch and fly speck are most commonly found on fruit on trees near windbreaks/hedgerows and in the shadiest part of the tree or orchard. Sooty blotch Olive green to dull black sooty blotches appear on near mature fruit in the …
Sooty blotch The fungus overwinters on twigs of various woody plants in hedgerows and windbreaks and on apple twigs. In spring, pycnidia (fruiting bodies) on wild plants and apple twigs produce large numbers of spores (conidia) that ooze out and are …
The sooty blotch fungus ( Gloeodes pomigena ) was previously believed to exist in different mycelial forms. Research in the USA in the 1980s has shown that in fact sooty blotch is associated with at least three unrelated fungi: Peltaster fructicola , …
Monitoring sooty blotch and fly speck based on visual symptoms is probably ineffective as a management tool because of the long interval between infection and symptom appearance. Where the diseases were a problem the previous year, probably specific …
Select an orchard site that has good sunlight, good air circulation and soil drainage. Prune trees to reduce shading and encourage good air circulation. Both sooty blotch and fly speck are encouraged by shading and wet conditions. Therefore, any pruning …
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