Field Production Pest Study Guide

What reduces flea beetles in vegetables?

Weed removal in spring

Where do Lygus Bugs overwinter?

Under the leaf litter at field margins

Where does apple scab overwinter?

In infected leaves on the ground

What pest causes swelling and premature reddening of fruit?

Chokecherry Midge

Why do Apple Maggot adults have a 2-3 week pre-oviposition period?

To feed to develop their ovaries

What is the economic threshold for the strawberry clipper weevil?

6.5/sq.ft.

What strawberry pest lays its eggs in the flower buds?

Strawberry Clipper Weevil

Which strawberry pest prefers to attack rotting/over-ripe fruit?

Strawberry Sap Beetle

What is another name for Botrytis?

Gray Mould

When do Pocket Gophers feed above ground?

Late spring and early summer

What are some biological controls for fungus gnats?

• Steinernema feltiae

• Atheta coriaria

• Stratiolaelaps scimitus

• Bacillus thuringiensis var. israelensis

What are characteristics of apple maggots?

• Adults have characteristic markings on the wings

• Causes pre-mature fruit drop

• Sticky traps are effective for suppression of adults
  Feeds primarily on seeds

What are names of Fusarium caused conditions?

• Crown and Root Rot of Tomato
  Fusarium Wilt

• Bulb Rot

• Internal Fruit Rot of Pepper

What is the survival structure of Rhizoctonia root rots?

Sclerotia

What currant pest can dead-head a plant?

Sowthistle Aphid

With reference to fruit flies, what does "below the equator" mean?

The flies oviposit in the lower half of the fruit

Why is the larval stage of the Colorado Potato Beetle more damaging than the adult?

The larvae feed more heavily than the adults

What is the most characteristic symptom of Lygus Bugs in strawberry?

Cat-facing

What does organic mulch around potatoes attract?

Spiders

Why are Heritage Varieties of vegetables useful for pest management?

Retain resistance genes

Which insect is repelled by Rosemary?

Imported Cabbageworm

Why is Late Blight of Potato, caused by Phytophthora infestans, called a "water mould"?

The zoospores swim in films of water that form in the soil and on plant surfaces

What causes aphids to give birth the offspring that will have wings?

Overcrowding

What is the value of planting garlic, chives, marigolds, or borage in a vegetable plot?

Repel pest insects

What is the condition called that is caused by Phytophthora?

Damping off

What is a biocontrol for Botrytis?

Trichoderma

What is a characteristic of cutworm damage?

Chew stems below soil level

What is a predisposing condition for infection by Fusarium?

Wounds

What is a pre-disposing condition for Pythium infection?

Extreme temperatures (especially cool temperatures)

What are the top three Saskatoon berry pests?

Saskatoon sawfly, Apple curculio, & Saskatoon bud moth

What is the Latin name for the Two-spotted Spider Mite?

Tetranychus urticae

What currant pest causes reddish puckering of the leaves?

Currant Aphid

What does the first generation of root maggots do?

Kill seedlings

What tactic reduces flea beetle, root maggot, and imported cabbageworm damage?

Floating row covers

What apple pest is best diagnosed by looking for crescent-shaped oviposition marks on the fruit?

Plum Curculio

What are recommended management practices for the Imported Cabbage Worm?

Hand-pick larvae when small
Apply recommended pesticides
Use floating row covers
Remove all cruciferous weeds

What is the minimum distance a vegetable crop rotation plot should be from its previous planting?

500 metres

What are characteristics of Pythium infection?

Complete destruction of seedlings
Poor establishment of transplants
Poor seed germination
Root and stem lesions on established plants

How do slugs overwinter?

As an egg under debris or in the soil

What is recommended for managing Apple Maggot in apples?

Remove and destroy fallen fruit