LO 5.2 - Identify 5 common pests from a list of 10 Flashcards
Examples include: Aphid, vine weevil, leather jacket, red spider mite, symptoms of gall mite of blackcurrant and eelworm, glasshouse white fly, slugs and snails, caterpillars - symptoms, damage and control measures
Identify this pest
What is this pest and it’s symptoms?
Pest ID
Carrot root fly symptoms
* Foliage becomes** wilted and discoloured**.
* Leaves turn rusty red to scarlet with some yellowing.
* Rusty-brown tunnels are seen under the outer skin of mature roots
Pest ID
Identify this Insect
What is this pest and it’s biological controls?
Pest ID
Biological
Parasitoid wasps
* Aphidius - Lays egg in aphid host and larva consumes host
Predators
* Hoverfly
* Lacewing & Larvae
* Ladybird & Larvae
* Gall midge larvae
* Orius bug
* Macrolophus pygmaeus (Green bug)
* Birds
Bio-Insecticide
* Naturalis L (fungus)
Pest ID
Identify this pest
What is this pest and it’s controls?
Pest ID
Red Spider Mite Controls
Cultural
* Mist plants twice daily
* Grow plants well-space plants, get rid of old plants.
* Clean greenhouse thoroughly in winter » Get rid of hibernating (red) females.
Biological
* Phytoseilus persimilis » Another predatory mite
Chemical
* Last resort, specific acaricides - resistance problems
* Fatty acids (Savona, Serenade)
Pest ID
Identify this pest
What is this pest and it’s cultural controls?
Pest ID
Whitefly cultural controls
- Hang yellow sticky traps - Indicator mainly
- Good weed control inside - remove alternate host plants
- Watch for signs of whitefly on new purchases
- Good ventilation will control the growth of sooty moulds
Pest ID
Identify this Insect
What is this pest and damage caused?
Pest ID
Black Vine Weevil symptoms
* Semi-circular notches eaten from edges of leaves
* Severe plant damage (or death) by larvae
* Can cut off roots
Pest ID
Identify this Insect
What is this pest and damage caused?
Pest ID
Aphid Damage
* Weakens plants
Vectors of viruses
* Giving galling and distortions
Pest ID
Identify this Insect
What is this pest and it’s biological controls?
Pest ID
Black Vine Weevil biological controls
* Bacteria in nematodes to kill black vine weevil larvae
* Products are Entonem - Larvanem - Sportnme-H
Pest ID
Identify this Insect
What is this pest and it’s symptoms?
Pest ID
Leather Jacket Symptoms
* Lawns develop yellowish brown dead patches;
* seedlings collapse having been eaten at soil level
* Crows dig up soil
Pest ID
Identify this pest
What is this pest and it’s chemical controls?
Pest ID
Whitefly chemical controls
- Flipper - Fatty acid
- Gazelle - Chemical
- Movento - Chemical
- Naturalis-L - Fungus
- SB Plant Invigorator
Pest ID
Identify this Insect
What is this pest and it’s cultural controls?
Pest ID
Leather Jacket controls
Cultural
* Lawn maintenance by improving drainage, regular mowing, aeration and fertillization.
* Nesting boxes for birds like starlings and thrushes, they eat leather jackets
Pest ID
Identify this Insect
What is this pest and it’s biological controls?
Pest ID
Leather Jacket controls
Biological
* Nematodes - Entonem, apply from late August to October’s end.
* Apply Nematodes in spring if infestation is severe and temp is above 10° C.
Pest ID
Identify this Insect
What is this pest and it’s chemical controls?
Pest ID
Leather Jacket controls
Chemical
* None available
Pest ID
Identify this pest
What is this pest and it’s symptoms?
Pest ID
Cabbage root fly symptoms
* Wilting foliage due to maggots or larvae eating roots
* Maggots at base of plant
Pest ID
Identify this pest
What is this pest and damage?
Pest ID
Snail and Slug damage symptoms
- Irregular holes in leaves - Sides, middle and back - Feed at night, when warm and humid
- Slime trails
- Seedlings decapitated
Pest ID
Identify this pest
What is this pest and it’s biological controls?
Pest ID
Whitefly biological controls
- Parasitic wasps, Encarsia formosa.
- Introduce the parasite before plants are heavily infested.
- Parasitised nymphs turn black so it is easy to monitor
- Encarsia is killed by most insecticides, avoid spraying
Pest ID
Identify this pest
What is this pest and it’s cultural controls?
Pest ID
Cabbage root fly controls
Cultural Control
* Place disks at base of young plants
* Cover crop with horticultural fleece
Pest ID
Identify this Insect
What is this pest and it’s chemical controls?
Pest ID
Chemical
* Only as a last resort
* Integrated crop management
Pest ID
Identify this pest
What is this pest and it’s symptoms?
Pest ID
Caterpillar damage symptoms
- Considerable defoliation (spring early summer)
- Trusses can be destroyed
Pest ID
Identify this pest
What is this pest and it’s controls?
Pest ID
Snail and Slug Controls
Cultural
* Grit, coffee grinds
* Copper barriers
* Beer traps,
Biological
* Nematodes
* birds (chickens)
Chemical
* Last resort - Slug pellets
Pest ID
Identify this Insect
What is this pest and it’s cultural controls?
Pest ID
Black Vine Weevil cultural controls
* Grease band is used to prevent climbing trunks
Pest ID
Identify this Insect
What is this pest and it’s symptoms?
Pest ID
Scarlet lily beetle symptoms
- Larvae covers themselves with frass (Poo)
- Foliage is eaten by adults and grubs
Pest ID
Identify this Insect
What is this pest and it’s cultural controls?
Pest ID
Aphid Cultural Controls
* Grow healthy plants
* Increase biodiversity
* Lavander Its strong scent can also deter aphids
* Wormwood scent deters aphid, flower attracts lacewings, ladybirds and hoverflies
* Marigold, lures aphids away from beans, attracts ladybirds, lacewings and hoverflies
* Thyme deters aphids
* Nasturtiums lure aphids away from beans, flower attracts predators as above
* Fennel attracts hoverflies
* Yellow Sticky traps
Pest ID
Identify this pest
What is this pest and it’s symptoms?
Pest ID
Red Spider Mite Symptoms
* Light speckling on upper leaf surface
* Discolouring of leaves
* Silk webbing when numbers are high » Biggest problem in June/July
Pest ID
Identify this Insect
What is this pest and it’s controls?
Pest ID
Scarlet lily beetle controls
Cultural
* Grow different plants » or less-susceptible lilies
* Handpick beetles (laborious)
* Encourage wildlife (e.g. ground-beetles, birds)
Biological
* Parasitic wasps show potential………
Chemical
* Last resort
Pest ID
Identify this pest
What is this pest and it’s cultural controls?
Pest ID
Caterpillar Controls
Cultural
* By hand - Pruning out, crush eggs/caterpillars
* Good hygiene/cultivation - Controls overwintering pupae in soil
Pest ID
Identify this pest
What is this pest and it’s biological controls?
Pest ID
Caterpillar Controls
Biological
* Stimulate presence of natural enemies
* Bacillus thuringiensis (BT) for younger larvae - Lepinox plus
Pest ID
Identify this pest
What is this pest and it’s chemical controls?
Pest ID
Caterpillar Controls
Chemical
* Last resort
Examples:
* Conserve: contact, translaminar
* Decis: contact, long persistence
* Karate zeon
Pest ID
Identify this pest
What is this pest and it’s symptoms?
Pest ID
Whitefly symptoms
- Sap feeding pest, this reduces the vigour of the host plant
- Excrete a sticky substance (honeydew) on foliage, allows growth of Black sooty moulds
- Damage to crops, Cucumber, Melon, Tomato, Pepper, Chrysanthemum, Gerbera, Pelargonium, Fuchsia, Poinsettia and Verbena.
- Plant is disturbed, clouds of insects
- Flat, oval, creamy white scale-like nymphs on the underside of leaves
Pest ID
Identify this Insect
What is this pest and it’s symptoms?
Pest ID
Aphid Symptoms
* Unsightly white casts on plants
* Excrete honeydew which encourages soothy moulds
* Blistering on leaves
Pest ID
Identify this pest
What is this pest and it’s cultural controls?
Pest ID
Carrot root fly controls
Cultural
* Adults fly up to 60cm from the soil only
* Use physical barriers or grow in raised pots
* Block scent by growing garlic, onions, chives, rosemary, sage, marigold
* Use horticultural fleece as a floating mulch
Pest ID
