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Themes: Pests and diseases

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Publications

Phytophthora lateralis – Pest Alert

Lead Author: Forestry Commission
Phytophthora lateralis is an aggressive, fungallike pathogen of Lawson cypress trees. It mainly attacks the roots of trees and can spread up through the trunk resulting in the rapid decline and death of the tree. Thought to originate in Asia, the disease is the main cause of mortality in Lawson cypress in its native range […]
Publications

Monitoring the oak processionary moth with Pheromone traps

Lead Author: Nigel A Straw
The oak processionary moth is a serious forestry pest that is capable of causing complete defoliation of oak trees. Its caterpillars are also a hazard to health. Breeding populations of the moth were discovered for the first time in the UK in London in 2006 and these initial infestations have since spread and the moth […]
Publications

Modelling ecological networks and dispersal in grey squirrels

Lead Author: Claire Stevenson
Understanding the role of the landscape matrix in species dispersal is important when targeting conservation and management strategies. This Research Note shows how least-cost modelling was used to assess invasive grey squirrel Sciurus carolinensis dispersal movements within the UK, with a focus on the county of Cumbria. Two major networks were identified separated by the […]
Publications

Ash dieback disease – Pest Alert

Lead Author: Forestry Commission
Ash dieback is a disease of ash trees caused by a fungus called Chalara fraxinea. The disease causes leaf loss and crown dieback in affected trees and it may lead to tree death. This Pest Alert provides information on distribution, symptoms, how the disease spreads and what you can do to help, as well as […]
Publications

Asian longhorn beetle – Pest Alert

Lead Author: Forestry Commission
The Asian longhorn beetle, a native to China and southeast Asia, is an invasive pest of trees in Britain. The larvae of the beetle feed on the wood of a wide range of broadleaved trees, which causes damage and will ultimately kill affected trees. The beetle has caused extensive damage to trees where it has […]
Publications

Minimising the impact of the great spruce bark beetle

Lead Author: Forestry Commission
The great spruce bark beetle is found in forests throughout continental Europe. It damages spruce trees by tunnelling into the bark of the living trees to lay its eggs under the bark. The developing larvae feed on the inner woody layers, which weakens, and in some cases may kill, the tree. The beetle was first […]
Publications

Tree pest and disease posters
A selection of posters that can be downloaded as PDFs and then printed at a size to suit (up to A0 size). These were mostly produced for the 2012 APF show and have been popular as posters to display in offices or places of work. Each poster shows a selection of images relating to the pest or disease and web links to where you can source more information.
Publications

Dothistroma needle blight – Field guide 2012

Lead Author: Forest Research
Sampling guidance, symptoms and further information.
Publications

Salt damage to trees

Lead Author: Forestry Commission
Pathology Advisory Note 11 Describes the symptoms of damage caused by de-icing salt. This document details signs and symptoms of the named tree pest(s) or disease(s) and provides advice on what to do if you suspect the pest or disease is present. Related pages Research and advice on tree pests and diseases Tree Health Diagnostic […]
Publications

Dutch Elm disease – Q&A

Lead Author: Forestry Commission
Pathology Advisory Note 10 Answers to common questions. This document details signs and symptoms of the named tree pest(s) or disease(s) and provides advice on what to do if you suspect the pest or disease is present. Related pages Dutch elm disease resources page Tree Health Diagnostic and Advisory Service
Publications

Oak pinhole borer

Lead Author: Forestry Commission
Tree Pest Advisory Note Wood boring beetle Platypus cylindrus that infests and breeds in cut trees, windblown trees, standing dead and dying trees. Revised: April 2010. This document details signs and symptoms of the named tree pest(s) or disease(s) and provides advice on what to do if you suspect the pest or disease is present. […]
Publications

Managing acute oak decline
Oak trees in Britain have long suffered from dieback and decline disorders, but a disease called acute oak decline has been causing particular concern since the first few years of the 21st century. A typical symptom of the disease is dark, sticky fluid bleeding from small cracks in the bark on the trunk of the […]
Publications

Potential impacts of drought and disease on forestry in Scotland

Lead Author: Sarah Green
This study identified 288 medium or high drought risk forest sites in eastern Scotland, 125 of which include Sitka spruce as a major component. Sitka spruce is intolerant of drought and is known to have previously experienced drought damage such as tree mortality and stem cracking in eastern Scotland. Cases of direct drought damage, together […]
Publications

Pine-tree lappet moth – Pest Alert

Lead Author: Forestry Commission
The pine-tree lappet moth has caused severe defoliation of Scots pine trees on many occasions in Eastern Europe. An initial assessment of the potential impact of the moth in Britain is that it presents a significant threat to the pine forests of northeast Scotland – and further afield if allowed to spread. This Pest Alert […]
Publications

Dutch elm disease diagnosis

Lead Author: Forestry Commission
Information sheet describing symptoms and how to confirm the diagnosis.
Publications

Red band needle blight of conifers in Britain

Lead Author: Anna Brown
Red band needle blight is an economically important disease affecting a number of coniferous trees, in particular pines. The disease has a world-wide distribution but until recently it was mainly of concern in the southern hemisphere. In much of the world, including Britain, it is caused by the fungus Dothistroma septosporum. Red band needle blight […]
Publications

Problems on plane trees

Lead Author: Forestry Commission
Pathology Advisory Note 7 Pathogens that could potentially be very damaging to Planes (Platanus spp.) in the UK. This document details signs and symptoms of the named tree pest(s) or disease(s) and provides advice on what to do if you suspect the pest or disease is present. Related pages Research and advice on tree pests […]
Publications

Cleaning mechanised pesticide spray equipment

Lead Author: Bill J Jones
This Technical Note sets out the procedures for cleaning pesticide applicators and proposes a cleaning regime drawn from current sources of best practice.

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