Plant-Parasitic Nematodes

Pathogen: Ring nematodes, Sting nematodes, Root-knot nematodes, Lance nematodes, Stunt nematodes, Spiral nematodes

Identification

Symptoms

Irregular thinning or wilting patches
Often mistaken for drought or nutrient deficiency
Root symptoms can include galls, lesions, stubby tips, or swelling

Season: Jun, Jul, Aug, Sep
Regions: South, Transition Zone, Warm West (CA / AZ / NM), Northeast
Turf Hosts: All

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Sources

This is identification help, not a diagnosis. Symptoms described here can overlap between diseases and other causes (drought, wear, nutrient deficiency). When you're not sure, or before applying any treatment, contact your state's Cooperative Extension office - most offer free or low-cost diagnosis and know your local conditions best.