Steinernema kraussei
Overview
Steinernema kraussei is an entomopathogenic nematode used mainly for biological control of vine weevil larvae. It is valued because it can remain active at lower temperatures than many other nematode species.
Type
Entomopathogenic nematode.
Target Pests
- Vine weevil larvae
- Some other soil-dwelling insect larvae
Why Steinernema kraussei is Important
Vine weevil larvae feed on plant roots and can cause severe damage before symptoms are visible above ground.
Steinernema kraussei allows biological control during cooler periods, making it especially useful in spring and autumn programmes.
Environmental Preferences
Moisture
Requires moist growing media.
Temperature
Useful at lower temperatures than many other nematodes.
Crops Commonly Used In
- Ornamentals
- Nursery stock
- Soft fruit
- Container crops
Strengths
- Good vine weevil control
- Useful in cooler seasons
- Suitable for container-grown crops
Limitations
- Requires moist substrate
- Sensitive to drying
- Needs good application coverage
Monitoring Establishment
Look for:
- Reduced larval activity
- Healthier root systems
- Reduced plant collapse
- Fewer larvae during root inspections