Onion (Allium cepa)-Nematode, Lesion

Cause Pratylenchus penetrans, a migratory endoparasitic nematode that overwinters in plant debris. P. penetrans affects a wide range of plant species.

Symptoms Plants are stunted and lesions can be found on roots, which also lack fine roots.

Biological control

  • MeloCon WG at 2 to 4 lb/A for nematode suppression. See label for specific application types and timings. 4-hr reentry. O