Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Onion > Round galls on roots
Onion > Root > Round galls on roots
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Northern root knot nematode
Meloidogyne hapla
- Roots have small round galls
- Onion plant is stunted, leaves yellow and die early in the season
- Onion bulbs are unaffected but small when roots are severely infected
- More information on Northern Root Knot Nematode
