Winter Wonderland of Pests and Diseases Dr Suzanne Sancisi-Frey - - PowerPoint PPT Presentation

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Winter Wonderland of Pests and Diseases Dr Suzanne Sancisi-Frey - - PowerPoint PPT Presentation

Feb 13, 2024 194 likes •411 views

Winter Wonderland of Pests and Diseases Dr Suzanne Sancisi-Frey Funded by the EUs LIFE programme Lucy Turner Winter Wonderland of Pests and Diseases Dr Ana Perez-Sierra Dr Suzanne Sancisi-Frey Funded by the EUs LIFE programme Gypsy

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Funded by the EU’s LIFE programme

Winter Wonderland of Pests and Diseases

Dr Suzanne Sancisi-Frey

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Funded by the EU’s LIFE programme

Winter Wonderland of Pests and Diseases

Dr Suzanne Sancisi-Frey

Dr Ana Perez-Sierra

Lucy Turner

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Funded by the EU’s LIFE programme

Hosts

  • 1. Sweet chestnut
  • 2. Ash
  • 3. Oak
  • 4. Plane
  • 5. Pines
  • 6. Cedars
  • 7. Spruces
  • 8. Lawsons cypress
  • 9. Juniper

Gypsy moth Pine sawfly

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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Sweet Chestnut

  • 1. Chestnut blight (Cryphonectria parasitica)
  • Bark lesions/cankers
  • Fruiting bodies
  • Discoloured bark
  • Epicormic shoots

Stephen Middleton

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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Sweet Chestnut

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Funded by the EU’s LIFE programme

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Funded by the EU’s LIFE programme

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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Sweet Chestnut

  • 2. Phytophthora ramorum
  • Epicormic shoots
  • Retained leaves?
  • Bleeds on bark
  • Branch dieback
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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Sweet Chestnut

  • 3. Oriental chestnut gall

wasp

  • Retained leaves
  • Distorted leaves
  • Woody galls

FC Tree Health Team

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Funded by the EU’s LIFE programme

Stephen Middleton

Misshapen leaves and galls

  • n sweet chestnut in summer
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Funded by the EU’s LIFE programme

FC Tree Health Team

Misshapen leaves and galls

  • n sweet chestnut in winter

Chestnut blight

  • P. ramorum

OCGW

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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Oak

  • 1. Oak processionary moth (Thaumetopoea

processionea)

  • Old nests
  • Egg plaques

Turkey

30 m tall

Holm Native

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Funded by the EU’s LIFE programme

An old oak processionary moth nest and silk trail

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Funded by the EU’s LIFE programme

Human Health Hazard

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Funded by the EU’s LIFE programme

Photo Ralph Parks and FR

Egg Plaques (approx. 20 mm long) of the

  • ak processionary moth

End of summer to following spring

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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Oak

  • 2. Acute oak decline
  • Old bleed stains
  • Exit holes
  • Branch dieback in the

crown

Misshapen leaves and galls

  • n sweet chestnut in winter
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Funded by the EU’s LIFE programme

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Funded by the EU’s LIFE programme

OPM AOD

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Funded by the EU’s LIFE programme

Winter Signs and Symptoms on Ash Trees

  • 1. Ash dieback (Hymenoscyphus fraxineus)
  • Bark lesions/cankers
  • Discoloured bark
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Funded by the EU’s LIFE programme

(

Fresh lesions

Bark lesions

  • Stem lesions develop from Oct though to spring
  • Around insertion points

Old lesions