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