Conservation Biological Control Flashcards
Conservation Biological Control
to integrate beneficial insects back into crop systems for natural pest control. This strategy is based upon ongoing research that now demonstrates a link between the conservation of natural habitat and reduced pest problems on farms.
Fungicides and herbicides
Minimal effect on beneficials
Insecticides
Lethal effect on beneficials ; result in two pest flare ups
Pest Resurgence
natural enemies are eliminated due to pesticide application.
Pest density is initially reduces, but pest numbers may return to outbreak levels
Pest Replacement
Occur in cases with two potential pests. Pest 1 reaches outbreak levels, apply pesticide, pest 1 is density reduced. Pest 2 then reaches outbreak levels.
Monitoring (sampling/scouting)
Treat only WHEN and WHERE it is needed
Selective Physiologically
Pesticides that are known to be less harmful to beneficials.
Selective Ecologically
Reduced pesticide dosages (lowest recommended rate)
Selective Formulations and Materials
Systemic pesticides
Spatial Selectivity
Spot treating and trap crops
Temporal Selectivity
Non-persistent materials
Halo Effect
GMO’s - area wide protection against pests
Crop Management
tillage, fertilization, use of resistant plants, GMO’s etc
Cropping Patterns involve…
managing the amount, type and distribution of vegetative crop and non-crops
Individual Field Level
Vegetative growth within and immediately surrounding an individual field can provide shelter habitat for beneficials.
