Pest & Disease Management Factsheets

Factsheets with detailed information on how to recognise and deal with the most common plant pests and diseases.

Ornamentals P&D Factsheets

Scale insects - How to identify and eliminate scale insects

Scale insects - How to identify and eliminate scale insects

Targeting the vulnerable nymph stage of the life cycle is key to efficient chemical control.

Powdery mildew: how to tackle powdery mildew infections

Powdery mildew: how to tackle powdery mildew infections

Accurate identification is vital because not all chemicals are equally effective against all genera.

Sooty moulds: how can ornamentals growers control sooty moulds?

Sooty moulds: how can ornamentals growers control sooty moulds?

Sooty moulds can take up management time out of all proportion to the actual damage they do to plants.

Red Thread: how groundskeepers can minimise damage from red thread on their turf

Red Thread: how groundskeepers can minimise damage from red thread on their turf

Red thread is among the most important diseases of sports and amenity turf, affecting both the visual appearance and the playing quality of the sward.

Giant Polypore: how foresters and arborists can treat and manage giant polypore on forest and woodland trees

Giant Polypore: how foresters and arborists can treat and manage giant polypore on forest and woodland trees

Arborists and foresters are faced with a wide range of wood decay fungi, which can infect living trees.

Phytophthora ramorum: how land managers and ornamentals growers can manage the threat of 'sudden oak death'

Phytophthora ramorum: how land managers and ornamentals growers can manage the threat of 'sudden oak death'

This fungal disease has caused extensive tree loss in California, affecting mainly tanbark oak and some Quercus species, giving rise to the name sudden oak death.


Fresh Produce P&D Factsheets

Pest and disease management - Powdery mildew in edible field crops

Pest and disease management - Powdery mildew in edible field crops

Powdery mildew in field crops, by Professor Geoffrey Dixon

Pest & disease factsheet - Mycosphaerella brassicicola (ring spot)

Pest & disease factsheet - Mycosphaerella brassicicola (ring spot)

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest & Disease Management - Leptosphaeria maculans (Phoma leaf spot) on field vegetable crops

Pest & Disease Management - Leptosphaeria maculans (Phoma leaf spot) on field vegetable crops

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest & Disease Management - Downy mildews on field vegetable crops

Pest & Disease Management - Downy mildews on field vegetable crops

These pathogens are characterised by sporulating on the under-surfaces of leaves with chlorotic and necrotic areas found on the upper surfaces, writes Geoffrey Dixon.

Pest & disease factsheet - Botrytis (Onion neck rot)

Pest & disease factsheet - Botrytis (Onion neck rot)

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest & Disease Management - Grey mould on edible field crops

Pest & Disease Management - Grey mould on edible field crops

This disease compromises brassica, pea and bean field crop quality, Professor Geoffrey Dixon warns.


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Honey Fungus: chemical and cultural measures for the control of honey fungus in park, garden, woodland and commercial settings

Honey Fungus: chemical and cultural measures for the control of honey fungus in park, garden, woodland and commercial settings

Honey fungus is one of the most dreaded diseases of trees and shrubs in landscape plantings.

Roe, fallow and muntjac deer: how can growers, landscapers and grounds staff combat damage to plants and trees from deer

Roe, fallow and muntjac deer: how can growers, landscapers and grounds staff combat damage to plants and trees from deer

As development encroaches on their habitat, deer are becoming more of an issue on commercial nursery sites.

Beech Bark Disease - what measures and strategies can best protect woodland and forests against beech bark disease

Beech Bark Disease - what measures and strategies can best protect woodland and forests against beech bark disease

Beech bark disease is most likely to attack trees with trunks that are more than 20cm in diameter, although it can also be a problem on young plantations.

Thrips: how can growers avoid thrips damage?

Thrips: how can growers avoid thrips damage?

Outdoor and glasshouse crops are at risk from these pests that will feed on flowers and leaves.

Pest & Disease Factsheet - Rust on ornamental crops

Pest & Disease Factsheet - Rust on ornamental crops

How can growers prevent the infections that cause this unsightly disease on plants' foliage and stems?

Pest & Disease Factsheet - Scab on ornamentals crops

Pest & Disease Factsheet - Scab on ornamentals crops

What can nursery stock growers do to avoid this disease on apples and pears, among others?


Pest & Disease Factsheet - Downy mildew on ornamentals crops

Pest & Disease Factsheet - Downy mildew on ornamentals crops

How can growers identify this fungal disease and what practice and products can prevent outbreaks?

Pest & Disease Factsheet - Damping-off in ornamental crops

Pest & Disease Factsheet - Damping-off in ornamental crops

How does damping-off kill seedlings and what steps can growers take to keep it off the nursery?

Pest & Disease Factsheet - Slugs & snails on ornamentals crops

Pest & Disease Factsheet - Slugs & snails on ornamentals crops

What action can farmers, growers and gardeners take to avoid crop damage from molluscan pests?

Pest & Disease Factsheet - Ash Dieback

Pest & Disease Factsheet - Ash Dieback

What controls are available for growers to keep this devastating disease away from ash trees?

Pest and Disease Factsheet - Black root rot in ornamentals production

Pest and Disease Factsheet - Black root rot in ornamentals production

Accurate identification, hygiene and disinfectants can all help to combat this disease on the nursery.

Pest & Disease Factsheet - Winter moths

Pest & Disease Factsheet - Winter moths

This group of pests can damage commercial fruit and forestry trees as well as ornamental crops.

Pest & Disease Management - Green manure

Pest & Disease Management - Green manure

Additional crop benefits for growers make this an increasingly popular option as a biofumiagant.

Pest & Disease Factsheet - Sciarid flies

Pest & Disease Factsheet - Sciarid flies

These pests transmit diseases that affect growth in ornamental crops and can even kill plants.

Pest & Disease Factsheet - leaf miners on ornamental crops

Pest & Disease Factsheet - leaf miners on ornamental crops

Watch for distinctive damage in ornamental crops.

Pest & Disease Factsheet - Tarsonemid & eriophyid mites

Pest & Disease Factsheet - Tarsonemid & eriophyid mites

These microscopic pests that are difficult to spot should be tackled with acaricides and predators.

Pest and Disease Factsheet - Whiteflies on ornamentals crops

Pest and Disease Factsheet - Whiteflies on ornamentals crops

How to identify and control these sap-sucking insects of protected and outdoor crops.

Pest & Disease Management - Compost tea

Pest & Disease Management - Compost tea

Ingredients and processes have been refined.

Pest and Disease Factsheet -  Leafhoppers, capsids, lace bugs & sap suckers

Pest and Disease Factsheet - Leafhoppers, capsids, lace bugs & sap suckers

Leafhoppers, capsids, froghoppers, lace bugs and psyllids are characterised by piercing and sucking mouthparts and hardened forewings that form a protective shield when folded over the abdomen.

Pest & Disease Factsheet - Peach leaf curl

Pest & Disease Factsheet - Peach leaf curl

Growers of fruit and ornamental trees need to be aware of this disfiguring disease.

Pest & Disease Factsheet - Botrytis on ornamentals crops

Pest & Disease Factsheet - Botrytis on ornamentals crops

Tight controls can help to reduce disease risk.

Pest & Disease Management - Fungal leaf spots on ornamental crops

Pest & Disease Management - Fungal leaf spots on ornamental crops

Control is needed to prevent economic losses in year-round ornamental crops.

Pest & Disease Factsheet - Vine weevil

Pest & Disease Factsheet - Vine weevil

Avoid costly damage by this serious plant pest.

Pest & Disease Factsheet - Mealybugs

Pest & Disease Factsheet - Mealybugs

Vines, tomatoes and tropical plants are among those at risk.

Pest & Disease Factsheet - Bacterial and fungal canker

Pest & Disease Factsheet - Bacterial and fungal canker

A wide range of nursery stock can be susceptible to potential damage from various cankers.

Pest & Disease Factsheet - Spider mites

Pest & Disease Factsheet - Spider mites

Defences for protected and outdoor ornamentals.

Pest & Disease Management - Adjuvants

Pest & Disease Management - Adjuvants

Adjuvants are substances that can be added to the spray tank to modify a pesticide and/or spray mixture's performance.

Pest & Disease Management - Clubroot disease on brassica crops

Pest & Disease Management - Clubroot disease on brassica crops

Plasmodiophora brassicae can be a problem for all brassica varieties, Professor Geoffrey Dixon warns.

Pest & Disease Management - Lettuce downy mildew

Pest & Disease Management - Lettuce downy mildew

Bremia lactucae can be a major problem for field vegetable growers, Professor Geoffrey Dixon warns.

Pest & Disease Management - Fusarium patch

Pest & Disease Management - Fusarium patch

Avoid damage to ornamental lawns and sports turf

Pest & Disease Factsheet - Moles on ornamentals crops

Pest & Disease Factsheet - Moles on ornamentals crops

Protect against root damage caused by tunnelling.

Pest & Disease Factsheet - Plane anthracnose

Pest & Disease Factsheet - Plane anthracnose

Take action to avoid this disease causing dieback and rendering plants unsaleable

Pest and disease management - Phytophthora root rots

Pest and disease management - Phytophthora root rots

Treatments to defend against these pathogens should be used alongside good hygiene practice.

Pest & Disease Factsheet - Needle blights

Pest & Disease Factsheet - Needle blights

Prevalent in wet, humid conditions and particularly on susceptible crops grown under overhead irrigation, tip blights can adversely affect a range of conifer species.

Pest & Disease Factsheet - Wilt on ornamentals crops

Pest & Disease Factsheet - Wilt on ornamentals crops

Poor husbandry, physical damage to roots and various diseases can all cause water deficit in leaves and non-woody stems of plants.

Pest & Disease Management - Caterpillars affecting ornamentals growers

Pest & Disease Management - Caterpillars affecting ornamentals growers

Control strategies mainly focus on larval stages.

Pest & Disease Factsheet- Beetles affecting ornamentals crop production

Pest & Disease Factsheet- Beetles affecting ornamentals crop production

There are more than a million beetle species, pests and beneficials, such as ladybirds, rove beetles and ground beetles. Depending on the species, adults can cause as much damage to ornamental plants and turf as larvae.

Pest & disease management - Aphids on protected crops

Pest & disease management - Aphids on protected crops

Rapid maturation and feeding damage on ornamental plants contribute to aphids' importance as pests.

Pest & Disease Factsheet - Downy mildew affecting ornamentals crops

Pest & Disease Factsheet - Downy mildew affecting ornamentals crops

This fungal disease relishes cool, humid conditions.

Pest & disease factsheet - Leaf and stem nematodes

Pest & disease factsheet - Leaf and stem nematodes

Eelworms can cause plant damage across a range of nursery stock, bulbs and herbaceous species.

Pest & Disease management - Peach leaf curl

Pest & Disease management - Peach leaf curl

Unsightly damage can affect fruit trees as well as ornamental plants, rendering them unsaleable.

Pest and disease management - Damping off

Pest and disease management - Damping off

Good site hygiene is crucial for effective control.

Notifiable pests & diseases

Notifiable pests & diseases

Import controls and nursery inspections are crucial tools for keeping stock healthy and enabling sales.

Pest & Disease Factsheet - Rodenticides

Pest & Disease Factsheet - Rodenticides

Responsible use in ornamental horticulture.

Pest & Disease Factsheet - White mould on field vegetable crops

Pest & Disease Factsheet - White mould on field vegetable crops

Disease profile for field vegetable growers, by Professor Geoffrey Dixon.

Pest & Disease Factsheet - Puccinia allii on allium crops

Pest & Disease Factsheet - Puccinia allii on allium crops

Disease profile for field vegetable growers, by Professor Geoffrey Dixon

Pest and disease factsheet - Pear leaf blister mite

Pest and disease factsheet - Pear leaf blister mite

This widespread pear pest can also attack apple trees.

Pest & Disease Management - Box blight

Pest & Disease Management - Box blight

This disease causes leaves to turn brown and fall.

Pest & Disease Management - Dutch elm disease

Pest & Disease Management - Dutch elm disease

Dutch elm disease is a fungal wilt spread by the elm bark beetles Scolytus scolytus and Scolytus multi-striatus.

Pest and disease factsheet - Leaf miners

Pest and disease factsheet - Leaf miners

These larvae damage leaves on ornamental crops.

FERA PLANT PEST FACTSHEET: Banded-winged whitefly (Trialeurodes abutiloneus)

FERA PLANT PEST FACTSHEET: Banded-winged whitefly (Trialeurodes abutiloneus)

FERA PLANT PEST FACTSHEET: Lemon tree borer (Oemona hirta)

FERA PLANT PEST FACTSHEET: Lemon tree borer (Oemona hirta)

FERA PLANT PEST FACTSHEET: Blueberry gall midge (Dasineura oxycoccana)

FERA PLANT PEST FACTSHEET: Blueberry gall midge (Dasineura oxycoccana)

A serious threat to Lawson's cypress (Chamaecyparis lawsoniana) - Phytophthora lateralis

A serious threat to Lawson's cypress (Chamaecyparis lawsoniana) - Phytophthora lateralis

FERA PLANT PEST FACTSHEET: Phytophthora kernoviae

FERA PLANT PEST FACTSHEET: Phytophthora kernoviae

FERA PLANT PEST FACTSHEET: Potato flea beetles (Epitrix species)

FERA PLANT PEST FACTSHEET: Potato flea beetles (Epitrix species)

FERA PLANT PEST FACTSHEET: Wheat Bug (Nysius huttoni)

FERA PLANT PEST FACTSHEET: Wheat Bug (Nysius huttoni)

FERA PLANT PEST FACTSHEET: Eggplant Borer (Leucinodes orbonalis)

FERA PLANT PEST FACTSHEET: Eggplant Borer (Leucinodes orbonalis)

FERA PLANT PEST FACTSHEET: Citrus longhorn beetle  (Anoplophora chinensis)

FERA PLANT PEST FACTSHEET: Citrus longhorn beetle (Anoplophora chinensis)