Psyllid
Sap-feeding pest causing leaf cupping, honeydew and distorted new growth.
Psyllids affect tomatoes, salads, soft fruit and ornamentals. Nymphs produce waxy filaments and develop rapidly in warm conditions. Symptoms include leaf cupping, curling, honeydew, sooty mould and reduced growth. Biological control uses Anthocoris nemoralis, Orius species and entomopathogenic fungi such as Beauveria bassiana, combined with removal of alternate host plants and avoidance of excessive nitrogen.
Biological Controls for Psyllid
The species below are examples of beneficial organisms commonly used against psyllid. Recommendations are based on published biological control information and practical IPM experience. Always confirm suitability for your crop, growing system and local conditions before use.
Anthocoris nemoralis
Environment: outdoor
Temperature Range: 12.0 – 28.0°C
Rate: Under review — consult current supplier guidance
Frequency: Consult current supplier guidance
Specialist predator of pear sucker and related psyllids. Introduce early before heavy honeydew and sooting occur.
Adalia bipunctata
Environment: outdoor
Temperature Range: 14.0 – 28.0°C
Rate: Under review — consult current supplier guidance
Frequency: Consult current supplier guidance
Ladybird predator contributing additional suppression.
Chrysoperla carnea
Environment: outdoor
Temperature Range: 14.0 – 28.0°C
Rate: Under review — consult current supplier guidance
Frequency: Consult current supplier guidance
Lacewing larvae feed on psyllid nymphs and other soft-bodied pests.
Further BioWiki Reading
For more background on pest biology, beneficial insects and environmental factors, use the BioWiki alongside this practical control guide.
Related Biological Solutions
Growers dealing with psyllid often also monitor these pests as part of a complete IPM programme: