Research

Accurate or precise?

June 19, 2017 By Curt Harler

When you are deciding whether or not to spray, it is important to know whether your threshold levels should be termed accurate or precise. Consider a superintendent who estimates that clover has infested more than five percent of a fairway. ...

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Super Science: Managing unmellow yellow nutsedge

May 22, 2017 By Luqi Li, Roch Gaussoin, Ph.D. and Zac Reicher, Ph.D.

Yellow nutsedge is a difficult-to-control weed that increasingly is a problem on golf courses. Its yellow-green color, coarse foliage and fast growth decrease visual quality, uniformity and, in the worst case, playability. Yellow nutsedge is a perennial that reproduces primarily ...

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Clark Talks Turf: Digging deep into fraze mowing

May 2, 2017 By Clark Throssell, Ph.D.

Brian Whitlark is a USGA agronomist in the West Region. Brian conducts course consulting visits, writes for USGA publications and is a conference speaker. Brian has observed several golf courses using fraze mowing to improve their turf. You may reach ...

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Nematodes in southern turfgrasses

May 2, 2017 By Bruce Martin, Ph.D.

Nematodes have been recognized as significant pests of turfgrasses in the South for more than 60 years, corresponding with increased U.S. economic vitality after World War II and heightened interest in golf. That heightened interest added dollars to promote better ...

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Bermudagrass adaptability in northern climates

April 17, 2017 By Matt Williams, David S. Gardner, Ph.D. and John R. Street, Ph.D.

Superintendents always look for ways to increase playability and durability of turfgrass stands, particularly under periods of stress. They often achieve this by selecting a species or a group of species for a specific climatic zone (i.e. warm-season grasses in ...

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Getting to know the nematode

April 14, 2017 By Glenn Galle and Jim Kerns, Ph.D.

Turfgrasses on many golf courses are under constant disease pressure, especially from nematode feeding damage. Sting nematode (Belonolaimus longicaudatus) is one of the most damaging turf pathogens. Root-knot nematode (Meloidogyne spp.) is also damaging, but feeds and reproduces within the ...

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