Broad Bean Beetle (Bruchus rufimanus)
Seed beetle attacking developing broad beans and reducing seed quality.
Broad bean beetle (Bruchus rufimanus) lays eggs on developing pods; larvae bore into seeds, reducing quality and germination. In field crops this is often managed culturally, but for seed production and specialist growers it is more significant. Biological control includes entomopathogenic fungi and nematodes in soil, plus trapping and sanitation to reduce adult populations.
Biological Controls for Broad Bean Beetle (Bruchus rufimanus)
The species below are examples of beneficial organisms commonly used against broad bean beetle (bruchus rufimanus). 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.
Steinernema carpocapsae
Environment: outdoor
Temperature Range: 10.0 – 25.0°C
Rate: Apply as per label to infested soil zones
Frequency: Single treatment, repeat if monitoring indicates
Larvae in soil can be suppressed with suitable nematodes; integrate with adjusted drilling dates and variety choice.
Atheta coriaria
Environment: all
Temperature Range: 10.0 – 30.0°C
Rate: 10–50/m²
Frequency: support only; top up as needed
Support-only predator layer around soil/debris interfaces; not a primary control for bean beetles. Keep expectations realistic.
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 broad bean beetle (bruchus rufimanus) often also monitor these pests as part of a complete IPM programme: