CONTROL GUIDE
Nematode Control Options
Photo Credit: Todd Lowe
Indemnify
Active ingredient: Fluopyram Chemical class / MOA: SDHI fungicide (FRAC 7) Rate: 8.5 – 17.1 fl oz/A
Nimitz Pro
Active ingredient: Fluensulfone Chemical class / MOA: Fluoroalkenyl thioether Rate: 40 lbs/acre as broadcast granular application
Controls via contact and systemic activity root-feeding nematodes, including but not limited to sting, root-knot, and stunt and the foliar-feeding nematode Anguina pacificae. Indemnify can be used as a preventive or curative to control nematodes and application is straightforward with minimal personal protection equipment. Indemnify should be applied prior to and during active root growth and watered- into the root zone to maximize turf recovery following periods of significant turf stress. Trefinti Active ingredient: Tymerium Chemical class / MOA: SDHI fungicide (FRAC 7) Rate: 3.8 – 7.6 fl oz/A or 3.8 – 7.6 fl oz/10,000 sq ft (spot treatment, greens) Broad-spectrum efficacy to reduce nematode populations (including sting, root-knot, and lance, among others) while controlling select fungal diseases (spring dead spot, take-all root rot, mini ring, and fairy ring) to increase root growth and promote healthier turf. To maximize nematode control and prevent resistance, a rotation program using Trefinti nematicide/fungicide and Divanem nematicide is recommended, particularly when nematode thresholds are high or significant damage has already occurred. Trefinti alone may be sufficient for many situations.
Contact acting nematicide with activity against sting, lance, lesion, and root-knot nematodes. For warm season turfgrass only. Apply to actively growing turf and irrigate immediately to move product into the root zone. Avoid use on cool-season turfgrass.
Zelto
Active ingredient: Burkholderia spp. Chemical class / MOA: Biological Rate: 6-12 flo oz/1,000 sq ft
A unique biological nematicide for turfgrass containing heat‑killed Burkholderia spp. strain A396 cells and spent fermentation media. It provides true nematicidal activity against eggs, juveniles, and adult nematodes (including sting, lance, root‑knot, and ring) and supports root and turf density improvement. Apply to moist soil, irrigate lightly within 24 hours to move into the root zone, and use preventively or in IPM programs. OMRI listed, minimal REI.
Curfew
Active ingredient: 1,3‑dichloropropene Chemical class / MOA: Soil fumigant Rate: *Custom applied
A soil‑fumigant nematicide containing 1,3‑dichloropropene for high‑value turf. Applied by certified custom applicators, it is injected ≥5 inches deep, volatilizes in soil, and provides rapid, broad‑spectrum control of sting, lance, root‑knot, ring, spiral, and stubby‑root nematodes. Apply to actively growing turf, or during renovation projects, seal with irrigation immediately after application, and use once annually as a foundation treatment, followed by topical nematicides for season‑long management. Restricted Use Pesticide.
Divanem
Active ingredient: Abamectin Chemical class / MOA: Avermectin insecticide (IRAC 6) Rate: 12.2 fl oz/A or 12.2 fl oz/10,000 sq ft (spot treatment)
Broad-spectrum control nematicide with efficacy on some the most damaging nematode species – sting, root-knot, lance, spiral and Anguina. For best results, ensure turf is wet prior to application, and a soil surfactant is included in a tank-mix with Divanem. Applications should be made during mornings when light levels are low and dew is present. If no dew is present, a short irrigation cycle should occur prior to application followed by adequate watering-in of the product to move into the root zone.
Always read and follow label instructions. All products may not be registered for use in all states.
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