Research has indicated that biological control of leaf scar infection is at least feasible. The tissues of leaf scars become invaded by various host-specific fungi, common primary saprophytes and bacteria. A strain of the naturally occurring fungal …
Given how widespread canker is in UK apple orchards and the significant tree and fruit losses it causes every year, AHDB Horticulture funded Project TF 167 to compare the level of control achieved by a best practice control programme compared to a …
Swinburne T R 1975. European apple canker. Review of Plant Pathology, 54, 787-799. Compendium of Apple and Pear Diseases edited Jones and Aldwinkle. APS Press …
Disease status Symptoms and recognition Disease cycle and epidemology Factors affecting tree susceptibility to N. ditissima and canker development Disease monitoring Disease forecasting Chemical control Cultural control Biological control Best practice …
Apple canker is one of the most important diseases of apple in the UK and parts of Europe and on susceptible varieties can cause serious losses . as a result of cankers on trees and a fruit rot, both in the orchard and in store. Symptom recognition in …
Apple scab is the most economically important disease of apples worldwide. All parts of the tree are affected and crop losses can be severe (70% or more) when weather conditions are favourable in the early part of the season. Losses can result directly …
The fungus V. inaequalis only attacks members of the Malus family. It also occurs on ornamental and wild crab apples, hawthorn ( Crataegus spp.), Pyrus, Sorbus, Pyracantha, Cotoneaster, Viburnum, Sarcocephalus esculentus and loquat ( Eriobotrya japonica …
Apple scab is widespread and common in all UK apple orchards, and occurs worldwide wherever apples are grown. It is less common in semi-arid regions in North America, Australia, New Zealand and South Africa. It is usually mainly a serious problem in …
Apple varieties differ in susceptibility to scab. Resistance to V. inaequalis is based mainly on Vf gene (major gene resistance). Varieties with polygenic resistance also are grown commercially. Most of the main culinary and dessert varieties grown in …
In areas where the inoculum source at the start of the season is almost exclusively ascospores from overwintered leaves it is possible to rationalise the early season fungicide programme based on an assessment of the likely ascospores available for …
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