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Page ContentThe MOVES Lab and its research team constantly develop new research ideas and questions. In October 2007, a study was started at the OTF Research & Education Facility at Ohio State looking at perennial ryegrass cultivars and their performance during heavy traffic. Traffic Simulation: Traffic was applied each year with the SISIS wear machine, developed sy SISIS and STRI. For the duration of the trial, data was collected every 2 weeks and included turf quality (color, density and uniformity) on a 1-9 scale, with 1 representing poorest and 9 representing best. At 2-inch mowing height, treatments that showed the best quality over the 2009 season were, in order: Barbeta, LPC 2, Traditional blend, LPC blend, LPC 14, LPC 8, Turfstar + Turfblue, LPC 4, and Baralpha. Generally, perennial ryegrass is very wear tolerant and has excellent recuperative abilities and color. The RPR variety Barbeta, performed very well in the trial and ranked high for wear tolerance, recuperation, stolon growth and color. The RPR variety Baralpha did not perform well in the trial and ranked low for wear tolerance and color.
This project was sponsored by The Royal Barenbrug Group, The Ohio Turfgrass Foundation and The Ohio Sports Turf Managers Association.


Monostands and blends of ryegrasses were evaluated, as well as one ryegrass mixed with Kentucky bluegrass. The machine is equipped with cleats on weighted rollers that have a differential slip and cause cleat damage and tearing of the grass.
In the second season (2009), stolon counts were also made by pulling cores with a golf green plugger and counting individual plants that clearly displayed stoloniferous growth. Effect of Mowing Height on Quality: There were differences in quality among treatments in relation to mowing height.
LPC blend + Turfblue did not rank in the top statistical group for the duration of the season. Two of the treatments, namely Baralpha and Barbeta are currently being promoted as spreading or regenerating perennial ryegrasses (RPR) that have prolific tillers and the ability to spread laterally via stolons. At 2-inch mowing height, treatments that showed the greatest number of stolons were, in order: Barbeta, LPC 2 and LPC 14, LPC blend, LPC 4, and Baralpha.
Stolons were not long in length, as seen with turfgrass plants like creeping bentgrass or bermudagrass, but they were clearly stolons and not extended tillers that were counted. Also, there was some rough bluegrass (Poa trivialis) contamination in the plots, so counts were made slowly and carefully, to ensure no Poa trivialis was included in the counts.


Ryegrass at 2-inch height lost density, became somewhat clumpy and was not as wear tolerant.
However, formal data was not collected on severity of disease, winter dormancy or other stress characteristics. More stolons were counted at the 2-inch mowing height, compared to 1.5-inch and 1-inch mowing height.
The 1.5 and 2-inch mowing heights were maintained with a walk-behind rotary mower and the 1-inch plots were maintained with a walk-behind reel mower. Stolon counts were not made during the first season in 2008 because close monitoring suggested that very few, if any, stolons were present.
All treatments recuperated adequately that no over-seeding was necessary during the trial and very few weeds encroached.



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