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Mouldy core - additional information

Disease status Other hosts Varietal susceptibility Distribution Symptoms and recognition Other problems that may be confused with mouldy core Disease cycle and epidemiology Disease monitoring and forecasting Cultural control Biological control Chemical …

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Mouldy core - disease status

Mouldy core is an internal dry rot of certain apple cultivars, especially Cameo and Bramley’s Seedling. The average incidence in 2007/8 of mouldy core in Cameo was around 10%. The main problem with mouldy core is that it develops inside the apple, often …

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Mouldy core - other hosts

Mouldy core can be caused by a range of different fungi including Alternaria, Stemphylium, Cladosporium, Epicoccum and Fusarium. These are commonly occurring saprophytic fungi that readily colonise decaying plant material. Their distribution is …

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Mouldy core - varietal susceptibility

Apple varieties susceptible to mouldy core generally have an open sinus extending from the calyx into the core that allows saprophytic fungi colonising senescing flower parts to enter the core region. Many varieties of apples are affected worldwide …

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Mouldy core - distribution

Widespread and common in UK apple orchards where susceptible varieties are grown. The problem has been recorded in the USA, Australia, New Zealand, Canada, South Africa and The …

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Mouldy core - symptoms and recognition

Mouldy core is an internal dry rot of certain apple varieties.  External symptoms are rare but fruit may colour and fall prematurely. The problem is characterised by the growth of fungus mycelium within the apple core, initially without invading the apple …

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Mouldy core - disease cycle and epidemiology

Apple varieties susceptible to mouldy core generally have an open sinus extending from the calyx into the core. Flower parts are rapidly colonised by a range of saprophytic fungi as they start to senesce and the open sinus allows these fungi to enter the …

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Mouldy core - disease monitoring and forecasting

As there are generally no external symptoms, orchard monitoring to assist in decisions on fungicide timing are not practical. Wet weather during blossom encourages colonisation of flower parts by fungi and can increase the risk of mouldy core. Assessing …

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Mouldy core - cultural control

Orchard training and pruning should allow good airflow and light penentration and allow trees to dry rapidly and reduce the risk of mouldy core. At harvest apples that are riper than usual should not be picked as these have a high chance of having mouldy …

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