Native remnant vegetation can support beneficial predatory insects. Pest suppressive landscapes are those that have the right mix of habitats that support beneficial insects and allow them to move into crop fields, while discouraging the build-up of pest insect species.
- Both pests and beneficial insects (also known as beneficials) can be found in a range of habitats in grain cropping landscapes, throughout the year.
- Pests are more commonly found on exotic weeds than on native plants.
- Weedy pastures can provide habitat for pest populations.
- Stands of native vegetation offer both opportunities and risks for pest management. Native vegetation remnants in good condition (containing few weeds and with an intact understory) may reduce the number of pests and support beneficials, but can also harbour some crop pests.
- Generally, native vegetation remnants in the landscape mean that crop paddocks are in a better position to suppress pests throughout the season.
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GRDC Project Code
National, North, South, West