Sciarid Fly (Bradysia impatiens)
Common fungus gnat species in propagation and pot crops.
Bradysia impatiens is one of the main fungus gnat species found in propagation and container production. Adults resemble small black flies; larvae live in moist compost, feeding on algae, fungi and fine roots. High populations damage seedlings and cuttings. Biological control uses Steinernema feltiae, Dalotia coriaria and Stratiolaelaps scimitus, alongside water management and reduction of algae.
Biological Controls for Sciarid Fly (Bradysia impatiens)
The options below are examples of beneficial insects and biological products commonly used against sciarid fly (bradysia impatiens). Always refer to supplier guidance and product labels for crop safety and local registration status.
Hypoaspis miles + Atheta coriaria
Product: Hypoline + Staphyline
Environment: glasshouse
Temperature Range: 10.0 – 28.0°C
Rate: Hypoline 50–100 mites/m²; Staphyline 0.5–1 beetles/m²
Frequency: Top up according to monitoring
Combined predation from soil mites and rove beetles gives strong suppression.
Related Biological Solutions
Growers dealing with sciarid fly (bradysia impatiens) often also monitor these pests as part of a complete IPM programme: