Nematode Knowledge | GreenCast | Syngenta

Nematodes in Turfgrass

A hidden threat

Many types of plant parasitic nematodes can threaten turf quality by feeding on plant roots. Turfgrass roots with nematode damage are less capable of absorbing water and nutrients from the soil, and require more frequent watering and are more susceptible to disease. As a result of nematode damage, turf may become chlorotic, wilt, thin out and die. Learn proper nematode sampling methods and find a local lab to test them.

Did You Know?

  • Nematodes are among the most abundant multicellular animals on earth. TWEET THIS
  • Nematodes occur in every soil type, but are most prevalent in sandy soils. TWEET THIS
  • Nematode damage is often mistaken for other issues such as drought, disease and nutrient deficiencies. TWEET THIS
  • The only way to accurately diagnose nematode damage is through a soil sample analysis. TWEET THIS

Importance of Proper Nematode Scouting

Courses across the country are susceptible to nematodes, regardless of their soil type, and their turf may have suffered root damage because of nematode feeding. It is important for every course to properly scout for nematodes by taking soil samples and having them analyzed by a local lab or extension service. With the results of these samples, superintendents can get to the root of existing problems and stay ahead of nematode damage during times of stress.

Watch this video on how to collect nematode samples.

Divanem® nematicide is an effective option for season-long control of a broad spectrum of nematodes. For additional protection against nematodes and the stress they may cause roots, Divanem is recommended for use with Heritage® Action fungicide as part of a comprehensive control program.

Nematode Control

Divanem nematicide contains the proven active ingredient abamectin that delivers excellent turf quality and broad-spectrum control of plant parasitic nematodes on tees, greens and fairways. Divanem is designed to move quickly into the soil where nematodes are most active to defend roots from the most troublesome nematode species – including lance, root-knot and sting. Additionally, Divanem can help significantly improve root system quality and mass. Healthier roots allow for stronger turf that maintains the highest quality above and below ground for quicker recovery from stress, including drought and aerification. Divanem also provides flexible application rates and timings to integrate into a range of agronomic programs on all turf species.


Heritage Action
Nematode and Disease Control

Nematodes weaken turf root systems, decreasing the plant's ability to defend against biotic and abiotic stressors like heat, drought and disease. Combining Divanem with Heritage Action can help manage nematodes, diseases and abiotic stressors. Heritage Action fungicide delivers hybrid technology that couples the proven disease control of Heritage® fungicide with a boost of acibenzolar-S-methyl (ASM) for enhanced biotic and abiotic stress management. This powerful combination is the number-one recommendation for nematode control from Syngenta.

Help improve root quality with Divanem + Heritage Action

The disease-fighting effects of azoxystrobin combined with the plant performance benefits of ASM in Heritage Action helps:

  • Protect plant roots against diseases that can easily effect areas where nematodes have fed
  • Improve the plants natural defenses against abiotic stress like heat and drought
  • Enhance turf quality of both warm and cool-season grasses for consistent playing conditions
  • Increase drought tolerance through increased root function, more efficient transpiration and improved soil water retention
  • Improve control of more than 20 diseases including anthracnose, patch disease, gray leaf spot and bacterial wilt suppression
To help control nematodes and diseases using a season-long agronomic program, visit our complimentary agronomic programs tool.

Customer Stories

"'The greens are the best I've seen them since I've been here,' says Jason Morris. 'Right now the proof is out there. It's pretty good.' Morris adds that the roots on the courses' greens are deeper than ever and the turf is denser than in years past. The addition of Divanem has been a part of that change."

-Jason Morris, Orange County National; Winter Garden, Florida

Concern about nematodes is increasing among golf course superintendents nationwide. Read "Nematodes - How Do I Know If I Have a Problem?" by Dr. Billy Crow to learn more.

WEBINAR: Diagnosing and Managing Nematodes; Dr. Lane Tredway, technical manager, Syngenta

GCSAA Education Points: 0.1



Divanem nematicide is now registered for use in New York

Golf course superintendents in New York can now manage lance, root knot and sting nematodes through the proven control of Divanem® nematicide from Syngenta.  Read more »


Seeing the unseen: how to scout for turf nematodes

Often, nematodes are overlooked pests in turfgrass. The above-ground symptoms that result from their feeding are extremely variable, including lack of wear tolerance, slow recovery from aerification, heat and drought stress, nutrient deficiency and increased susceptibility to disease.  Read more »


Program approaches for season-long nematode management

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