Summer Diseases of Apple and Pear

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Summer Diseases of Apple and Pear
Black Rot White Rot Bitter Rot Blue Mold Mucor
Rot Sooty Blotch Flyspeck
Fabraea Leaf Spot Pear Scab Stony Pit Fruit Rot
Fire Blight
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Summer Diseases of Apple
Bitter Rot
Disease Management
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Sooty Blotch - many fungi, a disease
complexFlyspeck - Zygophiala jamaicensis
Are separate diseases Both can be present on the
fruit at the same time
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Life Cycle
Sooty Blotch Flyspeck
winter
overwinter on alternate hosts
Feb-Mar
spores mature
Al Hosts
spring
Jul-Aug
rain
spores are discharged
wind
June
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Disease Management
Cultural methods are the best way to control
these diseases
Remove alternate hosts from the orchard and
surrounding hedgerows. Prune trees annually to
improve air circulation and to open up tree
canopy. This facilitates air movement and the
drying of fruit after a rain period. Thin to
separate fruit clusters. Cool fruit after
picking to retard the development of the disease.
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Summer Diseases of Apple and Pear
Fire Blight
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