Apple varieties vary in susceptibility. James Grieve, Cox and Lord Derby are most susceptible Other varieties such as Bramley are almost resistant. Some cider apple varieties such as Somerset Redstreak and Stembridge Clusters are very …
Widespread and common in UK apple orchards where susceptible varieties are grown. Monilinia laxa f. sp. mali is restricted to Europe. …
The fungus attacks flowers causing them to wilt turn brown and collapse. The symptoms appear from petal fall onwards. The outer bark of infected spurs is discoloured and the underlying tissues necrotic. Grey pustules of mycelium and spores develop on the …
The fungus overwinters in infected cankers or dead blossoms on branches. The sexual state is rare and unimportant in the perennation of the disease. Conidia produced on the cankers or dead blossoms in early spring are disseminated by wind and rain and …
In winter, look for distinct cankers or dead blossoms particularly on susceptible varieties. Inspect orchards for wilting /dying blossoms from the end of blossom. The presence of infected blossoms in one season indicates the need for fungicide treatment …
Remove infected blossoms and cankers. This is best done soon after blossom when the affected parts are easily visible rather than delaying until winter pruning. Removal of affected blossoms can be important where the disease incidence is high but is …
This is not an option at present. Research in other countries suggests that fungal antagonists exist which may suppress canker development but utilisation of such an approach has not been …
Protectant sprays combined with cultural control are the main means of control in the UK. In dessert and culinary orchards, the following season or following two seasons after detection apply a spray of boscalid + pyraclostrobin (Bellis) or cyprodinil + …
Byrde, R J W and Willets, H J (1977). The Brown Rot Fungi of Fruit. Their biology and control …
Disease status Other hosts Varietal susceptibility Distribution Symptoms and recognition Disease cycle and epidemiology Disease monitoring and forecasting Cultural control methods Biological control Chemical control Further …
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