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Biological Control Modified Banker Plants
L.S. Osborne
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ModifiedBanker Plants

• Uses alternate hosts
• Uses confined hosts
• Potential to sell entire system
• May be specific to region
• Can move plants out if pesticides are needed

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ModifiedBanker Plants

• Used to establish natural enemies
• Used to augment natural enemies
• Used to increase natural enemy numbers
• Used to evaluate quality of natural enemies

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ModifiedBanker Plants

• Used to evaluate quality of natural enemies
• Used to slow PESTICIDE RESISTANCE
• Can be integrated with pesticides if necessary
• TRAINING!

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SCOUTSCOUT SCOUT SCOUT SCOUT SCOUT SCOUT SCOUT
SCOUT SCOUT SCOUT SCOUT SCOUT SCOUT SCOUT SCOUT
SCOUT SCOUT SCOUT SCOUT SCOUT
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Biological Control WHY?
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100 Reliance on Pesticides

• RESISTANCE

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Crisis!
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Biological Controls

• Parasites
• Predators
• Pathogens

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• Natural enemies
• Parasitoid
• Pathogen or nematode

• Parasite

• Hyperparasite

• Predator

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TYPICAL RELEASEMETHODS
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Seasonal Inoculative
Introduce natural enemies
EIL
Begin Cycle
Begin Cycle
End Cycle
Time (months)
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Economics
Problems-
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Availability
Problems-
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Quality Control
Problems-
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PesticideInteractions
Problems-
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Modified Banker Plants(Open Rearing Systems)
Solution?
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Clean Host Plants
Isolation Area 1
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Isolation Area 2
Infested Host Plants
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Isolation Area 3
Infest with Natural Enemies
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Banker Plants
Introduce banker plants
EIL
Begin Cycle
Begin Cycle
End Cycle
Time (months)
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THRIPS

• BP Pollen Producing Plants or
• Grain
• AH Stored Product Mite or
• Pollen
• NE Amblyseius swirskii, A. cucumeris, Orius

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Banker System (without a plant)
Amblyseius swirskii
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A sachet contains bran, Carpoglyphus lactis
(Dried Fruit Mite or Sugar Mite) and the
predatory mite A. swirskii.
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MEALYBUGS(open rearing system)

• BP Potato or Squash
• AH The mealybug pest
• NE Parasitoids and Predators

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