Blastobasis is a highly damaging, but local, pest of apple. The life cycle involves one main mid summer generation with a very small partial second flight of adults in the autumn and early winter. The caterpillars feed on the flesh of ripening fruit …
Gloeosporium and Colletotrichum spp. are important causes of rotting in stored apples in UK, Europe and other parts of the world where the summers are usually wet. In the UK these fungi were responsible for significant losses (30-50%) in Cox in the 1960s …
Gloeosporium perennans and G. album are more restricted in host range being mainly found in apple, pear and some ornamentals. G. album can also be found on weeds. Colletotrichum gloeosporiodes and C. acutatum are much more variable fungi with a wide host …
Apple varieties do vary in susceptibility to Gloeosporium spp. These rots are commonly found on stored Cox, Golden Delicious and occasionally on Gala and Egremont Russet, but rare on Bramley and Jonagold. However, Colletotrichum spp. often occur on …
G. album is widespread in the UK, France, Germany, Eire and other parts of Europe and also Australia, New Zealand, Canada G. perennans widespread in UK, Eire and other parts of Europe, Australia, New Zealand, USA and Canada Colletotrichum spp. ( …
Fruit rots Symptoms caused by the three fungal species on fruit are similar and symptoms are similar on all cultivars. The fungus usually enters via a lenticel producing a cheek rot, but it may also occur around the stalk or calyx where it enters via a …
Gloeosporium and Colletotrichum rots can be easily confused with those caused by Nectria galligena which also occur in the cheek, eye and stalk end of the apple. The presence of slimy spore masses usually distinguishes it from Nectria rot, but where these …
All three fungi overwinter in the orchard on cankers ( G. perennans ), dead twigs, diseased bark, dead leaves or mummified fruit. Cankers result from fungal spores invading wounds, frost cracks, etc, in trees. During wet weather in the growing seasons …
Gloeosporium and Colletotrichum rots are difficult to monitor in the orchard, since the rots are rarely seen, the cankers not easily distinguishable from those caused by Nectria and the fungi not readily distinguishable on other inoculum sources such as …
Remove possible source of inoculum, such as cankers, die-back, pruning snags, mummified fruits during winter pruning. Remove from the orchard and burn or macerate up in the alleyway to encourage rotting. Summer prune at the correct time to avoid die-back …
Niab
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