integrated pest management (ipm)
DESCRIPTION
Integrated Pest Management (IPM). What is a pest organism?. Depends on who is defining it!. What is a pest?. Unwanted or undesirable organism Reduces value of human resources (food, feed, water, or space) Injures humans, animals, crops, structures, and possessions - PowerPoint PPT PresentationTRANSCRIPT
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Integrated Pest Management(IPM)
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What is a pest organism?Depends on who is defining it!
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What is a pest?Unwanted or undesirable organism Reduces value of human resources
(food, feed, water, or space)Injures humans, animals, crops,
structures, and possessionsSpreads or causes diseaseCauses annoyance, discomfort,
inconvenience, interference
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What is Integrated Pest Management?A planned method to manage
pestsControl, not eradication is the
goalExamines ecosystem impactsExamines human health impactsEvaluates effectiveness
constantlyDoes not rely solely on chemical
pesticides (but includes them when appropriate)
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Biological Control(one method used in IPC)The planned introduction of living
organisms to control the population of pest organisms
Relies on predation, parasitism or herbivores
Usually done by government authorities (e.g. Ontario Ministry of Natural Resources)
Extensive research before it is done – examining ecosystem effects- such as potential for organism to become an invasive species
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Biological Control – 3 methodsConservation of natural enemies
(e.g. providing habitat / food source for predator/parasite species)
Classical – introduce a foreign species to prey on / parasitize another
Augmentation – supplemental release of natural enemies to increase their population
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ExamplesAsian ladybeetles released in
North America (1980s) to control aphidsVERY SUCCESSFUL!
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Maybe too successful!Outcompeted native ladybeetles
for food (aphids) and the native species population has decreased
Now considered a nuisance themselves by many as they tend to overwinter indoors and can stain things when squashed
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Parasitic Wasps or FliesWasps or flies lay their eggs on
or in another insect. Developing larvae use the host insect as food.
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Herbivores to control weedsExample: introduction of moth
species to control Leafy Spurge (British Columbia)
Before After
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Biological Control – 2 examples
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Parasitic Wasps
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Video linkshttp://www.youtube.com/watch?v
=Hj3DwimxvvY
http://www.youtube.com/watch?v=rLtUk-W5Gpk