Research

Photo: Austin Brown

Primo Maxx: To reapply or not?

June 6, 2018 By , and
Making the decision to apply a plant growth regulator like Primo Maxx (Syngenta, trinexapac-ethyl) on ultradwarf bermudagrass (Cynodon dactylon x C. transvaalensis) is easy. In addition to growth suppression, Primo can provide enhanced color, increased density and more consistent green ...

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Photo: Brian Whitlark

A new index for sodicity risk assessment of irrigation water

May 22, 2018 By , and
Golf courses with poor quality irrigation water must worry about sodium accumulation in soil. Sodium adsorption ratio (SAR) is the primary criterion of estimating sodium hazard of irrigation waters. However, SAR has been shown to underestimate the risk of sodium ...

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Photo by: Gregg Munshaw.

Winter bermudagrass overseeding: Does it hurt or help?

May 14, 2018 By , , , , and
Bermudagrass (Cynodon dactylon) is the choice for golf course fairways and tees in the South and in the Transition Zone because it tolerates close mowing (less than 3/4 inch) and forms a dense, durable and persistent turf. One of the ...

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Photo by: Damon Smith

Predicting dollar spot just got easier

April 12, 2018 By , , and
As spring approaches, some especially devastating diseases once again rear their ugly heads. Argued to be the costliest disease of turfgrass worldwide, dollar spot will be on a lot of minds and in a lot of budgets. With warmer temperatures, ...

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Photos by: Mark newton (1,2), Syngenta (3), Bruce Martin, Ph.d. (4, 5), Derek Settle, Ph.D. (6)

Invisible intruders

March 26, 2018 By
In the summer of 2015, Mark Newton, CGCS at Canyon Farms Golf Club in Lenexa, Kan., was worried he might lose his job. He and his two assistant superintendents were spot-watering greens up to five times a day. His greens ...

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Hydrocarbon machine fluid injury on greens: What do we know?

March 26, 2018 By
Motorized turfgrass management equipment uses hydrocarbon-based machine fluids, including fuels, lubricants and hydraulic oils. Leaks of these machine fluids injure turf, especially on greens (Photo 1). The most pronounced visual symptom of machine-fluid injury is an area of turf exhibiting ...

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