Whitefly Environment & Risk Factors
Whitefly pressure is influenced by temperature, crop continuity and plant growth.
Temperature
Warm conditions increase whitefly development and egg laying.
Crop Continuity
Whitefly populations often persist where crops are continuously present.
Nitrogen
Soft, lush growth can favour whitefly population development.
Protected Environments
Glasshouses provide ideal conditions for many whitefly species.
Practical Risk Indicators
- Warm temperatures
- Continuous cropping
- Soft growth
- Whitefly adults on lower leaves
- Previous infestations