floral careers plant propagation. major insect pests in the greenhouse
Post on 19-Dec-2015
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TRANSCRIPT
INSECTS, DISEASES AND GREENHOUSE
SAFETY
Floral Careers Plant Propagation
Major Insect Pests in the Greenhouse
Aphids Thrips Whiteflies Mealybugs Spider Mites
Aphids
Immature & Adult Greenhouse Thrips
Greenhouse Whiteflies
Mealybug excreting honeydew
Two-spotted Spider Mite
Red Spider Mite
Insect & Disease Scouting
Also called “monitoring’. Perform weekly. Use sticky cards for insects
Yellow: attracts most flying insectsBlue: for thrips
Look for disease symptoms.
Controlling Insects and Diseases
Sanitation
The goal of sanitation is to eliminate all possible sources of the pest.weed removal.quarantine infested plants.medium pasteurization (especially if it
contains soil).algae control-fungus gnats.
Watering
Too much moisture:leaf diseasesroot rotsfungus gnatsalgae
Too little moisture:stresses the plants and predisposes it to
diseasehot, dry conditions favor spider mites
Variety Selection
Choose insect/disease resistant varieties.
Greenhouse Safety
Pesticide Labels
Caution: slightly toxic Warning: moderately toxic (a
teaspoonful to one ounce could kill an average size adult).
Danger/Poison: highly toxic (one teaspoonful could kill an average size adult).
Restricted Entry Interval (REI) Posted on greenhouse door. The time immediately following pesticide
application when entry is restricted. For example REI 12 hours.
Pesticide Storage
Pesticides must be stored in a separate, ventilated room.
General Safety Concerns
No smoking. Keep hoses off the floor. Watch out for wet floors that may be
slippery. Wash your hands after handling plants. Don’t drink the water!
End