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Insects, Diseases and Disorders on Raspberry in Ontario

Author: Pam Fisher - Berry Crops Specialist/OMAFRA
Creation Date: June 2001
Last Reviewed: 13 August 2003

Table of Contents

  1. Part One: Diseases on Canes and Leaves
    1. Spur Blight
    2. Cane Botrytis
    3. Cane Blight
    4. Anthracnose
    5. Cane Gall
    6. Powdery Mildew
    7. Leaf Spot
    8. Late Leaf Rust
    9. Orange Rust
  2. Part Two: Insect and Disease Damage on Canes and Fruit
    1. Fire Blight
    2. Red-Necked Cane Borer
    3. Snowy Tree Cricket
    4. Two Spotted Spider Mite
    5. Raspberry Cane Borer
    6. White Druplet Disorder
    7. Rust
    8. Anthracnose
    9. Botrytis
    10. Geometrid
    11. Tarnished Plant Bug
    12. Raspberry Fruit Worm
  3. Part Three: What Causes Dead or Dying Canes
    1. Winter Injury
    2. Verticillium Wilt
    3. Crown Gall
    4. Phytophthora Root Rot
    5. Crown Borer

Part One: Diseases on Canes and Leaves

  1. Spur Blight
  2. Cane Botrytis
  3. Cane Blight
  4. Anthracnose
  5. Cane Gall
  6. Powdery Mildew
  7. Leaf Spot
  8. Late Leaf Rust
  9. Orange Rust

Spur Blight

Imge of an overwintering cane with spur blight.




Spur Blight: overwintering canes

Image of primocane with spur blight.

Spur Blight: Primocanes

 

Image of cane with spur blight.

Spur Blight

Image of two canes with spur blight.

 

Spur Blight

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Cane Botrytis

Image of two canes inplanting with cane botrytis.

 

Cane Botrytis

 

Image of cane with cane botrytis.

 

Cane Botrytis

 

 

Cane Blight

Image of canes in planting with cane blight symptoms.

Cane Blight: symptoms

Image of cane with lesion when bark is scraped away.

Cane Blight: lesion when bark is scraped away

Image of cane with cane blight lesion.

Cane Blight: lesion

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Anthracnose

Image of cane with anthracnose lesions.

Anthracnose on stem

Image of leaf petiole with anthracnose lesions.

Anthracnose lesions on petiole.

 

Cane Gall

Image of raspberry canes in the winer with cane gall.

Powdery Mildew

Image of growing terminal with powerding mildew.

Leaf Spot

Image of leaves with leafspot.

 

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Late Leaf Rust

Image of underside of leaf with late leaf rust.

 

Orange Rust

Image of black berry leaf with orange rust.

Orange Rust (blackberry only)

Orange Rust

Image with leaf with orange rust.

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Part Two: Insect and Disease Damage on Canes and Fruit

  1. Fire Blight
  2. Red-Necked Cane Borer
  3. Snowy Tree Cricket
  4. Two Spotted Spider Mite
  5. Raspberry Cane Borer
  6. White Druplet Disorder
  7. Rust
  8. Anthracnose
  9. Botrytis
  10. Geometrid
  11. Tarnished Plant Bug
  12. Raspberry Fruit Worm
Fire Blight

Image of leaf blacken by Fire Blight inspection.

Fire Blight. Leaves blacken.

Image of shoot tips wilted.

Fire Blight. Shoot tips wilt.

Image of fruit on cane that are dry and hard.

Fire Blight. Fruit may become dry and hard.

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Red-Necked Cane Borer

Image of cane with swelling due to Red-necked Cane Borer.

Red-Necked Cane Borer. Larvae tunnel in primocanes, causing swelling and stretch marks.

Image of cane with scraped bark showing spiral tunnel tracks from larvae.

Red Necked Cane Borer. Scraped bark to see spiral tunnel tracks from larvae.

Snowy Tree Cricket

Image of cane with zipper like egg laying scar.

Snowy Tree Cricket. Zipper like egg laying scar.

Image of leaf with Nymph of snowy tree cricket.

Snowy Tree Cricket. Nymph.

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Two-Spotted Spider Mite

Image of leaves with two spotted spider mite.

Two-Spotted Spider Mite. Stippling on leaves from mite feeding.

 

Raspberry Cane Borer

Image of raspberry shoot with egg laying scar.

Raspberry Cane Borer. Note characteristic double cut around egg laying scar, resulting in wilted shoots

Image of wilted cane due to raspberry cane borer.

Raspberry Cane Borer. Wilted shoots resulting from egg laying scar.

 

White Druplet Disorder

Image of raspberry druplet with white druplet disorder.

White Druplet Disorder. Solar Injury.

Rust

Image of raspberry fruit with rust.

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Anthracnose

Image of fruit with Anthracnose.

Anthracnose damage on fruit.

Botrytis

Image of fruit with Botrytis.

Botrytis. Gray mould.

 

Geometrid

Image of fruit with larva.

Geometrid. Looper

Image of picked fruit with larva.

 

Geometrid. Looper

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Tarnished Plant Bug

Image of dried up druplets.

Tarnished Plant Bug. Dried up druplets as a result of the tarnished plant bug.

Image of dried up druplets.

Tarnished Plant Bug. Dried up druplets as a result of the tarnished plant bug.

Image of fruit with tarnished plant bug.

Tarnished Plant Bug.

 

Raspberry Fruit Worm

Image of raspberry leaves.

Raspberry Fruit Worm. Shredding of leaves pre-bloom from adults.

Image of raspberry fruit worm beetle.

Raspberry Fruit Worm. Adult.

Image of raspberry fruitlets.

Raspberry Fruit Worm. Adult laying eggs in fruit..

Image of fruit with larva.

Raspberry Fruit Worm. Larvae feed in fruit.

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Part Three: What Causes Dead or Dying Canes

  1. Winter Injury
  2. Verticillium Wilt
  3. Crown Gall
  4. Phytophthora Root Rot
  5. Crown Borer

Winter Injury

Image of raspberry planting with winter injury.

Winter Injury. Canes die back from tips down. Pattern of injury depends on variety and cold exposure. Injury shows up in early spring.

Verticillium Wilt

Image of black raspberry canes with Verticillum Wilt.

Verticillium Wilt. Black raspberries very susceptible. Causes canes to wilt. “Bluestem” appearance to infested canes.

Image of canes with Verticillium Wilt.

Verticillium Wilt.

Crown Gall

Image of raspberry roots with galls.

Crown Gall. Large tumours or galls on roots. Plant vigour reduced but c.g is rarely fatal.

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Phytophthora Root Rot

Image of raspbery primocanes with wilt.

Phytophthora Root Rot. Initially, primocanes may wilt.

Image of raspberry planting with Phytophthora Root Rot.

Phytophthora Root Rot. In following season, primocane emergence is poor

 

Image of raspberry crown scraped back to show characteristic rust red colour.

Phytophthora Root Rot. Characteristic rust red colour evident in crown tissue.

Image of raspberry planting with Phytophthora Root Rot.

Phytophthora Root Rot.


Crown Borer

Image or raspberry crown with frass and tunnelling.

Crown Borer. Evidence of frass and tunnelling in crown tissue.

Image of stem split open to show crown borer larvae and tunnel.

Crown Borer. Dirty white larvae (caterpillar) present

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For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca