Dr. Phyto
pea-and-bean weevil
Sitona lineatus
Symptoms
Distinctive U-shaped notches around leaf margins from adult feeding (looks like someone took bites with a hole punch), larvae visible inside Rhizobium root nodules when pulled up, stunted + yellowed plants from compromised nitrogen fixation, severe attack in cold wet springs delays flowering.
Plants affected
Treatment
Dr. Phyto builds a dated, step-by-step treatment plan with country-approved products — start a free diagnosis to get yours.
Common questions
- How do I recognise pea-and-bean weevil on alfalfa / lucerne?
- Distinctive U-shaped notches around leaf margins from adult feeding (looks like someone took bites with a hole punch), larvae visible inside Rhizobium root nodules when pulled up, stunted + yellowed plants from compromised nitrogen fixation, severe attack in cold wet springs delays flowering.
- Do I have to report pea-and-bean weevil?
- No. pea-and-bean weevil is not a notifiable organism, so there is nothing to report to an authority. Treat it as a normal garden problem.
- How is pea-and-bean weevil treated?
- Mainly with biological and cultural measures — removing affected material, changing the conditions that favour it, and treating with agents approved in your country. The exact steps and their timing depend on the plant, the season and where you live: Dr. Phyto works them out in a free diagnosis.
Diagnose my plant
Free first diagnosis · no sign-up to start