IPMP3.0, Oregon State University, Copyright 2000





Registered Nematicides



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Stubby-Root Nematode Studdy-Root Nematode Head
Stubby-root Nematode Body stubby-root Nematode Head
Stubby-root nematodes (Paratrichodorus spp.) are migratory ecoparasites, which occur in mint occasionally, but their impact on mint production is unknown. Stubby-root nematodes generally do best in sandy soils and are capable of considerable vertical migration between the surface and depths greater than three feet. The life cycle is completed in as short as 2 1/2 weeks at 30 C, but at cooler temperatures may take as long as six weeks. Feeding by stubby-root nematodes causes the root tip to stop growing, stunting root growth.  Lateral roots often emerge from behind the root tips, which are also fed upon. These become stunted and produce lateral roots on their own. Swelling of roots is also common, producing a prolific system of many short, branched, "stubby" appearing roots, which do not explore sufficient soil volume to take up adequate water and nutrients for the plant. Thus, plant tops show water and nutrient stress.
General Description General Description of Damage Symptoms