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Culture & Identification, Ch 8 Part 2 Insects. Vegetable Pests http://science.mccneb.edu/pevans/Image_Data_Base/Default.htm. aphids armyworms cabbage loopers cabbage root maggot Colorado potato beetle corn rootworm cucumber beetle. Prevention floating row covers reduce nitrogen

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vegetable pests http science mccneb edu pevans image data base default htm
Vegetable Pestshttp://science.mccneb.edu/pevans/Image_Data_Base/Default.htm
  • aphids
  • armyworms
  • cabbage loopers
  • cabbage root maggot
  • Colorado potato beetle
  • corn rootworm
  • cucumber beetle

Cultivation & Identification, Chapter 8, Insects

aphids
Prevention

floating row covers

reduce nitrogen

increase beneficials

lacewings

aphid midges

Control

insecticidal soap

Neem

Pyrethrum

Aphids

Cultivation & Identification, Chapter 8, Insects

armyworms
Prevention

floating row covers

increase beneficials

parasitic wasps

parasitic flies

Control

handpick

spray BT

spray Neem

Armyworms

Cultivation & Identification, Chapter 8, Insects

cabbage looper
Prevention

floating row covers

increase beneficials

predatory wasps

Control

handpick

spray BT

spray Neem

Pyrethrin

Sabadilla

Cabbage Looper

Cultivation & Identification, Chapter 8, Insects

cabbage root maggot
Prevention

alkaline soil

½ cup wood ashes/plant

parasiticnematodes

Control

stem shields/ tar paper

row covers

no compost

destroyinfected plants

Cabbage Root Maggot

Cultivation & Identification, Chapter 8, Insects

cabbage root maggot7

Photo courtesy Dr. Lloyd Dosdall, Alberta Agriculture

Cabbage Root Maggot

Cultivation & Identification, Chapter 8, Insects

colorado potato beetle
Prevention

beneficialnematodes

nectar & pollen-rich plants

Control

handpick

row covers

spray BT

Neem

Pyrethrin

Sabadilla

Rotenone

Colorado Potato Beetle

Cultivation & Identification, Chapter 8, Insects

corn rootworm
Prevention

rotate crops

plant in warm soil

cultivate deeply

Control

applyparasitic nematodesto soil

Corn Rootworm

Cultivation & Identification, Chapter 8, Insects

cucumber beetle
Prevention

grow resistant cultivars to wilt& mosaic

destroyinfected plants

rotate gourd crops with legumes

Control

row covers

apply parasitic nematodes

Sabadilla

Rotenone

Pyrethrin

Cucumber Beetle

Cultivation & Identification, Chapter 8, Insects

vegetable pests
Vegetable Pests
  • cutworm
  • European corn borer
  • flea beetle
  • hornworm
  • imported cabbageworm
  • Japanese beetle
  • leafhopper

Cultivation & Identification, Chapter 8, Insects

cutworm
Prevention

plant collars

drench parasitic nematodes/ 1 week before planting

soldier beetles help

apply wood ashes

Control

mix BT withmoist bran& molasses,scatter

Cutworm

Cultivation & Identification, Chapter 8, Insects

european corn borer
Prevention

rotate crops

destroyinfected plants

fall clean-up

apply parasiticwasps

Control

spray BT on leaves, &tips of ears

Ryania

Rotenone

Sabadilla

European Corn Borer

Cultivation & Identification, Chapter 8, Insects

flea beetle
Prevention

row covers

susceptibleplants grow insome shade

Control

dust with diatomaceous earth

Pyrethrum

Rotenone

Flea Beetle

Cultivation & Identification, Chapter 8, Insects

hornworm
Prevention

attract native parasites byplanting pollen& nectar-richflowers

Control

handpick

spray with BT when caterpillars are small

Hornworm

Cultivation & Identification, Chapter 8, Insects

imported cabbageworm
Prevention

row covers

attractivepredatory wasps

yellow stickytraps

Control

handpick

spray BT

Neem

Pyrethrin

Sabadilla

Imported Cabbageworm

Cultivation & Identification, Chapter 8, Insects

japanese beetle
Prevention

treat lawn w/milky-sporedisease

hanging traps

Control

handpick early am

Sabadilla

Pyrethrum

Rotenone

Japanese Beetle

Cultivation & Identification, Chapter 8, Insects

leafhopper
Prevention

row covers

Control

diatomaceous earth

insecticidal soap

Pyrethrum

Rotenone

Leafhopper

Cultivation & Identification, Chapter 8, Insects

vegetable pests20
Vegetable Pests
  • leaf miner
  • Mexican bean beetle
  • mites
  • onion maggot
  • pickleworm
  • slugs and snails
  • squash bug

Cultivation & Identification, Chapter 8, Insects

leaf miner
Prevention

row covers

removeinfected leaves

attract beneficials

parasitic wasps

Control

preventionis best

larvae in leaves; it is too late

Neem for adults

Leaf Miner

Cultivation & Identification, Chapter 8, Insects

mexican bean beetle
Prevention

destroy yellow eggs

row covers

fall clean up

spined soldier bugs

parasitic wasps

trap crop/soybeans

Control

handpick

Neem

Pyrethrum

Rotenone

Sabadilla

Mexican Bean Beetle

Cultivation & Identification, Chapter 8, Insects

mites
Prevention

spray plants withwater to discourage

attract predators

ladybugs

lacewings

Control

insecticidal soaps

Sabadilla

Pyrethrum

Rotenone

Mites

Cultivation & Identification, Chapter 8, Insects

onion maggot
Prevention

row covers

diatomaceous earth

fall clean up

plant onionsas a trap crop elsewhere

Control

prevention best

when eggs are laid in bulb,too late

Onion Maggot

Cultivation & Identification, Chapter 8, Insects

pickleworm
Prevention

fall clean up

deep cultivation

early maturing cultivars

summer squashas trap crop

Control

prevention best

once enteredthe plants, difficult toremove

Pickleworm

Cultivation & Identification, Chapter 8, Insects

slugs snails
Prevention

traps

grapefruit rinds

cabbage leaves

copper flashing

beer

Control

wood ashes

diatomaceous earth

Slugs & Snails

Cultivation & Identification, Chapter 8, Insects

squash bug
Prevention

row covers

fall clean up

free of debris

attract beneficials

trellises

Control

handpick

Sabadilla

Pyrethrum

Rotenone

Squash Bug

Cultivation & Identification, Chapter 8, Insects

vegetable pests28
Vegetable Pests
  • squash vine borer
  • stinkbugs
  • tarnished plant bug
  • thrips
  • webworms
  • whitefly
  • wireworm

Cultivation & Identification, Chapter 8, Insects

squash vine borer
Prevention

row covers until blossoms appear

wrap stem bases with stockings/ prevent egg laying

Control

slit open infested vines/crush pests

dust base w/ Pyrethrum, Sabadilla, Rotenone

Squash Vine Borer

Cultivation & Identification, Chapter 8, Insects

stinkbugs stinkbug 2
Prevention

fall clean up

attract native beneficials

parasitic wasps

Control

handpick

Pyrethrum

Sabadilla

Rotenone

Stinkbugsstinkbug 2

Cultivation & Identification, Chapter 8, Insects

tarnished plant bug
Prevention

fall clean up

white sticky traps

attract native beneficials

Control

row covers

Rotenone

Sabadilla

Tarnished Plant Bug

Cultivation & Identification, Chapter 8, Insects

thrips
Prevention

fall clean up

aluminum foil mulch

yellow sticky traps

attract lacewings

Control

insecticidal soap

Pyrethrum

Rotenone

Thrips

Cultivation & Identification, Chapter 8, Insects

webworms
Prevention

row covers

attract native beneficials

Control

handpick

spray BT

Pyrethrum

Webworms

Cultivation & Identification, Chapter 8, Insects

whitefly
Prevention

yellow sticky traps

attract beneficials

check transplants from greenhouse

Control

insecticidal soap

Pyrethrum

Rotenone

Whitefly

Cultivation & Identification, Chapter 8, Insects

wireworm
Prevention

parasitic nematodes

cultivate soildeeply & oftento exposeto predators

Control

trap w/pieces of potato buried in soil

change every other day

Wireworm

Cultivation & Identification, Chapter 8, Insects

conclusion
Conclusion

When dealing with insect pests:

Rule 1 prevention is better

2 cleanliness: most important ritual of the garden

3 daily monitoring

4 know what you are treating

Cultivation & Identification, Chapter 8, Insects

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