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Published byLillian Mason
Modified over 6 years ago
PRINCIPLES of PEST CONTROL
What is a PEST? Anything that competes, injures, spreads disease, or just annoys us Most organisms are not pests
Pest Categories Continuous pest Nearly always present –Requires regular control
Pest Categories Sporadic, migratory, or cyclical pest –Require control occasionally
Pest Categories Potential pest –Don’t require control under normal circumstances
Pest Control Goals Prevention When the pest’s presence and damage can be predicted
Pest Control Goals Suppression Reducing pest population to an acceptable level
Pest Control Goals Eradication Not common in outdoor conditions Indoor is possible
Threshold Level of pest population that action should be taken to prevent harm
Threshold Action threshold is based on visual damage or health
Threshold Economic threshold is the level at which cost of harm (yield) exceeds cost of control
Pest Monitoring Insects: trapping and scouting
Pest Monitoring Weed: visual inspection Timing emergence
Pest Monitoring Disease: scouting symptoms and conditions
Integrated Pest Management (IPM) Combining appropriate pest control tactics into a single plan
Integrated Pest Management (IPM) Host resistance Some species, and some varieties of species, resist pests
Integrated Pest Management (IPM) Host resistance Repel pest: chemicals produced naturally by plant
Integrated Pest Management (IPM) Host resistance Tolerance: grows vigorous enough to overcome damage
Integrated Pest Management (IPM) Host resistance Physical: some characteristic makes it difficult for pest Pubescent leaf
Biological Support predator populations –Diverse planting –Native plants Integrated Pest Management (IPM)
Biological Release predators Integrated Pest Management (IPM)
Biological Pheromone traps Integrated Pest Management (IPM)
Cultural : alter environment, host, or conditions Crop rotation Integrated Pest Management (IPM)
Cultural : alter environment, host, or conditions Fertilization Integrated Pest Management (IPM)
Cultural : alter environment, host, or conditions Pruning Integrated Pest Management (IPM)
Mechanical Physical controls –Handpick Integrated Pest Management (IPM)
Mechanical Screens and barriers Integrated Pest Management (IPM)
Sanitation Removal of debris that harbors pests Diseased foliage Integrated Pest Management (IPM)
Sanitation Overwintering pests Integrated Pest Management (IPM)
Chemical Destroys, controls, or prevents pests Integrated Pest Management (IPM)
Chemical failure Bad timing Wrong chemical Wrong dosage
Chemical failure Resistance Pest populations develop resistance to chemical Occurs when the same chemical is used Rotate chemicals
Integrated Pest Management
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