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Peach

Damage to Fruit in Preharvest Sample

Each name links to a guideline with more identification and management information.

Click on each photo to enlarge
Damage caused by peach twig borer.
Peach twig borer
Identification tip: The peach twig borer larva generally enters fruit at the stem end or along the suture and feeds just under the skin.
Damage caused by oriental fruit moth
Oriental fruit moth
Identification tip: Small larvae of oriental fruit moth bore into the fruit, often at the stem end or where two fruit are touching, and feed in the pit area.

Damage caused by leafrollers..
Obliquebanded leafroller and omnivorous leafroller
Identification tip: Obliquebanded leafroller and omnivorous leafroller cause similar damage by chewing shallow channels in the fruit surface, resulting in small surface scars. Leaves may be webbed to the fruit.

Damage caused by san jose scale
San Jose scale
Identification tip: San Jose scale on fruit can cause fruit spotting.
Stink bug damage.
Stink bugs
Identification tip: Stink bug feeding causes depressions in young green fruit.
Plant bug damage.
Plant bugs (Calocoris)
Identification tip: Plant bug feeding on green fruit creates small, bluish-green spots.
Katydid damage.
Katydids
Identification tip: The corky patch on this fruit is typical of katydid damage.
Feeding damage caused by thrips
Thrips
Identification tip: Feeding by thrips scars the surface of the fruit; eventually these scars enlarge as the fruit grows, and may cause fruit deformity.
Fruit rot damage.
Fruit rot
Identification tip: Ripe fruit rot first appears as small dark spots that rapidly enlarge and eventually contain grayish tufts of spores on the surface.
Rust damage.
Rust
Identification tip: Small, sunken spots caused by rust may be confused with stink bug damage, but the presence of rust spots on foliage helps identify the disease.
   

Statewide IPM Program, Agriculture and Natural Resources, University of California
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