Biological Control & Modified Banker Plants

L.S. Osborne

Modified Banker Plants

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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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Modified Banker Plants Used to establish natural enemies Used to augment natural enemies Used to increase natural enemy numbers Used to evaluate quality of natural enemies

Modified Banker Plants

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

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Biological Control

WHY ?

100% Reliance on Pesticides =

RESISTANCE

Crisis!

Biological Controls Parasites Predators Pathogens

Natural enemies

Parasitoid • Parasite • Hyperparasite • Pathogen or nematode • Predator

TYPICAL RELEASE METHODS

0.5

Seasonal Inoculative 1 Introduce natural enemies EIL 0 1 Begin Cycle 2 3 4 5 Time (months) 6 End Cycle Begin Cycle

Problems-

Economics

Problems-

Availability

Problems-

Quality Control

Problems-

Pesticide Interactions

Solution?

Modified Banker Plants

(Open Rearing Systems)

Isolation Area 1

Clean Host Plants

Isolation Area 2 Infested Host Plants

Isolation Area 3 Infest with Natural Enemies

0.5

Banker Plants 1 Introduce banker plants EIL 0 1 Begin Cycle 2 3 4 5 Time (months) 6 End Cycle Begin Cycle

THRIPS BP= Pollen Producing Plants or Grain AH= Stored Product Mite or Pollen NE=

Amblyseius swirskii, A. cucumeris, Orius

Banker System (without a plant)

Amblyseius swirskii

A sachet contains bran,

Carpoglyphus lactis

(Dried Fruit Mite or Sugar Mite) and the predatory mite

A. swirskii

.

MEALYBUGS (open rearing system) BP= Potato or Squash AH= The mealybug pest NE= Parasitoids and Predators