Field Identification
Semi-endoparasitic nematode that embeds its front half in cotton, soybean, and vegetable roots while the swollen rear stays outside—causing stunting, nutrient deficiency symptoms, and yield loss in warm sandy soils.
Females are kidney-shaped on roots; eggs in gelatinous masses; damage combines with Fusarium wilt complexes on cotton. Soil assays quantify eggs per gram before you commit cash crops.
How to Deal With It
Organic Control Methods
Neem cake and mustard seed meal soil amendments show nematicidal activity in trials; pasteurized compost topdressings support competitive microbiomes—not instant fixes.
Pasteuria spp. and Purpureocillium lilacinum (Paecilomyces) products; cover crops of marigold (Tagetes patula) and certain sorghum-sudangrass biofumigant cycles.
Long rotations with poor hosts; summer fallow with tillage timed to desiccate eggs where erosion risk allows; organic matter to feed antagonists; avoid moving infested subsoil on equipment.
Solarization of beds; steam treatment of propagation mix.
Test fields before lease; clean boots and blades between blocks; use nematode-free transplants.
Let Nature Handle It
Natural Enemies
- Pasteuria spp.
- Purpureocillium lilacinum
- Predatory Nematodes
Threat Map