Transcript VEGETABLES AND HERBS - Metropolitan Community College

Culture & Identification, Ch 8 Part 2 Insects
Vegetable Pests
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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
Cultivation & Identification, Chapter 8, Insects
Armyworms
Prevention
floating row covers
increase beneficials
- parasitic wasps
- parasitic flies
Control
handpick
spray BT
spray Neem
Cultivation & Identification, Chapter 8, Insects
Cabbage Looper
Prevention
floating row covers
increase beneficials
- predatory wasps
Control
handpick
spray BT
spray Neem
Pyrethrin
Sabadilla
Cultivation & Identification, Chapter 8, Insects
Cabbage Root Maggot
Prevention
alkaline soil
½ cup wood
ashes/plant
parasitic
nematodes
Control
stem shields/
tar paper
row covers
no compost
destroy
infected plants
Cultivation & Identification, Chapter 8, Insects
Photo
courtesy Dr. Lloyd Dosdall, Alberta Agriculture
Cabbage Root Maggot
Cultivation & Identification, Chapter 8, Insects
Colorado Potato Beetle
Prevention
beneficial
nematodes
nectar & pollenrich plants
Control
handpick
row covers
spray BT
Neem
Pyrethrin
Sabadilla
Rotenone
Cultivation & Identification, Chapter 8, Insects
Corn Rootworm
Prevention
rotate crops
plant in warm soil
cultivate deeply
Control
apply
parasitic
nematodes
to soil
Cultivation & Identification, Chapter 8, Insects
Cucumber Beetle
Prevention
grow resistant
cultivars to wilt
& mosaic
destroy
infected plants
rotate gourd crops
with legumes
Control
row covers
apply parasitic
nematodes
Sabadilla
Rotenone
Pyrethrin
Cultivation & Identification, Chapter 8, Insects
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 with
moist bran
& molasses,
scatter
Cultivation & Identification, Chapter 8, Insects
European Corn Borer
Prevention
rotate crops
destroy
infected plants
fall clean-up
apply parasitic
wasps
Control
spray BT on
leaves, &
tips of ears
Ryania
Rotenone
Sabadilla
Cultivation & Identification, Chapter 8, Insects
Flea Beetle
Prevention
row covers
susceptible
plants grow in
some shade
Control
dust with
diatomaceous
earth
Pyrethrum
Rotenone
Cultivation & Identification, Chapter 8, Insects
Hornworm
Prevention
attract native
parasites by
planting pollen
& nectar-rich
flowers
Control
handpick
spray with
BT when
caterpillars
are small
Cultivation & Identification, Chapter 8, Insects
Imported Cabbageworm
Prevention
row covers
attractive
predatory wasps
yellow sticky
traps
Control
handpick
spray BT
Neem
Pyrethrin
Sabadilla
Cultivation & Identification, Chapter 8, Insects
Photo
courtesy Dr. Lloyd Dosdall, Alberta Agriculture
Imported Cabbageworm
Cultivation & Identification, Chapter 8, Insects
Japanese Beetle
Prevention
treat lawn w/
milky-spore
disease
hanging traps
Control
handpick
early am
Sabadilla
Pyrethrum
Rotenone
Cultivation & Identification, Chapter 8, Insects
Leafhopper
Prevention
row covers
Control
diatomaceous
earth
insecticidal soap
Pyrethrum
Rotenone
Cultivation & Identification, Chapter 8, Insects
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
remove
infected leaves
attract beneficials
- parasitic wasps
Control
prevention
is best
larvae in leaves;
it is too late
Neem for adults
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
Cultivation & Identification, Chapter 8, Insects
Mites
Prevention
spray plants with
water to discourage
attract predators
- ladybugs
- lacewings
Control
insecticidal soaps
Sabadilla
Pyrethrum
Rotenone
Cultivation & Identification, Chapter 8, Insects
Onion Maggot
Prevention
row covers
diatomaceous earth
fall clean up
plant onions
as a trap crop
elsewhere
Control
prevention best
when eggs are
laid in bulb,
too late
Cultivation & Identification, Chapter 8, Insects
Pickleworm
Prevention
fall clean up
deep cultivation
early maturing
cultivars
summer squash
as trap crop
Control
prevention best
once entered
the plants,
difficult to
remove
Cultivation & Identification, Chapter 8, Insects
Slugs & Snails
Prevention
traps
grapefruit rinds
cabbage leaves
copper flashing
beer
Control
wood ashes
diatomaceous
earth
Cultivation & Identification, Chapter 8, Insects
Squash Bug
Prevention
row covers
fall clean up
free of debris
attract beneficials
trellises
Control
handpick
Sabadilla
Pyrethrum
Rotenone
Cultivation & Identification, Chapter 8, Insects
Vegetable Pests
squash vine borer
stinkbugs
tarnished plant bug
thrips
webworms
whitefly
wireworm
Cultivation & Identification, Chapter 8, Insects
Squash Vine Borer
Prevention
Control
row covers until
slit open infested
blossoms appear
vines/crush pests
wrap stem bases with dust base w/
stockings/ prevent
Pyrethrum,
egg laying
Sabadilla,
Rotenone
Cultivation & Identification, Chapter 8, Insects
Stinkbugs
stinkbug 2
Prevention
fall clean up
attract native
beneficials
parasitic wasps
Control
handpick
Pyrethrum
Sabadilla
Rotenone
Cultivation & Identification, Chapter 8, Insects
Tarnished Plant Bug
Prevention
fall clean up
white sticky traps
attract native
beneficials
Control
row covers
Rotenone
Sabadilla
Cultivation & Identification, Chapter 8, Insects
Thrips
Prevention
Control
fall clean up
insecticidal soap
aluminum foil mulch
Pyrethrum
yellow sticky traps
Rotenone
attract lacewings
Cultivation & Identification, Chapter 8, Insects
Webworms
Prevention
row covers
attract native
beneficials
Control
handpick
spray BT
Pyrethrum
Cultivation & Identification, Chapter 8, Insects
Whitefly
Prevention
yellow sticky traps
attract beneficials
check transplants
from greenhouse
Control
insecticidal soap
Pyrethrum
Rotenone
Cultivation & Identification, Chapter 8, Insects
Wireworm
Prevention
Control
parasitic nematodes
trap w/
pieces of potato
cultivate soil
buried in soil
deeply & often
to expose
change every
to predators
other day
Cultivation & Identification, Chapter 8, Insects
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