Get to know nematodes

Nematodes are detrimental turf pests found in golf course greens, fairways and tees across the United States. They are small, microscopic, unsegmented worms that feed on turfgrass roots, disabling their ability to take up water and nutrients. Nematodes can be devastating to root formation and overall turf health.

Nematode Damage on Roots

Feeding habits

Nematodes are most abundant when the turf is actively growing – in the spring and fall for cool-season grasses, and in the summer months for warm-season grasses. In addition to direct feeding, nematodes can promote fungal infection and development, resulting in greater turf damage.

What to Look For in Nematode Damage
What to look for

Above ground: Patchy yellowing of turf, thinning, wilting, poor response to fertilizers and weed invasion

Below ground: Reduced rooting, root lesions, root knots or root galls, excessive root branching, injured root tips and root rots (Associated with take-all root rot, Pythium root rot and other opportunistic pathogens.)


Indemnify can deliver strong results in as little as one application with the flexibility to apply up to four times per year.

Derek Settle
PhD, Bayer Green Solutions Team Specialist

Derek Settle talks about nematode solutions

Nematode Solutions

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Meet the next-generation nematicide

Find out why Indemnify® is the end of the road for nematodes and how this innovative nematicide controls nematodes and improves root health.


Stop nematode problems before they start

Learn how Nortica® protects turf roots from nematodes while delivering exceptional benefits to the root systems.

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Other things you can do to control nematodes

You can also use these tips to help reduce turf stress and increase turf tolerance.
  • Raise the height of cut
  • Use lightweight mowing and rolling equipment
  • Apply adequate and balanced fertility
  • Aerify to reduce compaction
  • Monitor irrigation/soil moisture
  • Apply foliar nitrogen to compensate for root loss
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