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TURFGRASS SCIENCE

Evaluating Traffic Stress by the Brinkman Traffic Simulator and Cady Traffic Simulator on a Kentucky Bluegrass Stand

^a New Dimensions Turf, Inc., 9 Colvin Ave., Buffalo, NY 14216
^b Univ. of Connecticut, Dep. of Plant Science, 1376 Storrs Rd., Unit 4067, Storrs, CT 06269-4067
^c Univ. of Tennessee–Knoxville, Ellington Plant Science Bldg., 2431 Center Dr., Knoxville, TN 37996
^d Michigan State Univ., Dep. of Crop and Soil Sciences, 162 Plant and Soil Science Bldg., East Lansing, MI 48824. Funding was provided by Project GREEEN and the Michigan Turfgrass Foundation

^* Corresponding author (ndturf{at}mac.com).

The Brinkman Traffic Simulator (BTS) has been a useful tool to simulate sports field traffic. However, rate of traffic stress produced by the BTS, a pull-behind unit with two differentially connected studded rollers, has been questioned. The Cady Traffic Simulator (CTS), a modified walk-behind core cultivation unit, was developed and tested to potentially produce more aggressive traffic stress. A comparison study was initiated between the BTS and CTS to evaluate these simulators on a Kentucky bluegrass (Poa pratensis L.) stand. Playing surface data collected were surface hardness, traction, soil moisture, bulk density, porosity, and plant counts. Higher surface hardness, lower traction, and lower plant count values resulted when the CTS applied 10 passes per week (PPW) compared with other treatments. Surface hardness, traction, and bulk density values were statistically similar when the CTS applied 2 PPW, and BTS applied 10 PPW.

Abbreviations: BTS, Brinkman Traffic Simulator • B2, 2 passes wk^–1 applied with the BTS • B10, 10 passes wk^–1 applied with the BTS • CTS, Cady Traffic Simulator • C2FF, one pass forward/one pass forward, respectively, applied with the CTS for a total of 2 passes wk^–1 • C10FF, one pass forward/one pass forward, respectively, applied five times with the CTS for a total of 10 passes wk^–1 • C2FR, one pass forward/one pass reverse, respectively, applied with the CTS for a total of 2 passes wk^–1 • C10FR, one pass forward/one pass reverse, respectively, applied five times with the CTS for a total of 10 passes wk^–1 • PPW, passes per week.