RPR: Regenerating Perennial Ryegrass

RPRÂŽ Trials In recent years, RPR performance has been

In separate studies conducted by Iowa

evaluated by turf researchers at several

State in 2010, the establishment of

different universities where it was analyzed

RPR was evaluated under various levels

for fundamental turf characteristics including

of traffic and compared with mixtures

establishment under traffic, traffic tolerance

containing both Kentucky bluegrass and

and recovery. The results: RPR is superior

SOS Turf Annual Ryegrass. Conducted in

in traffic tolerance trials when compared to

both the spring and fall, and using a traffic

traditional perennial ryegrass and maintains

simulator, the trial area was subjected

high turf quality under these conditions of

to various levels of traffic intensity. For

heavy traffic.

the spring study, traffic started six days

At The Ohio State University, research plots

after planting in mid-April. The Kentucky

were rigorously subjected to damage by a traffic simulator. In the graph below, data supports RPR’s ability to maintain quality and integrity despite three days of traffic applied.

Intense Traffic Recovery

bluegrass never established and the SOS turf annual transitioned as early summer temps spiked. Only the RPR and mixtures containing it thrived and maintained cover during the trial duration through August.

In the Iowa State fall study, an early

9

September planting was again subjected

6

to various intensities of traffic simulation 13 days after planting. Similar to the

3 0

RPR Ohio State University

spring, the Kentucky bluegrass was again Non-RPR

RPR was also tested for traffic tolerance at the Southeastern Turfgrass Research Center in Lexington, Kentucky. As in The Ohio State

the poorest performer, while the RPR and SOS, alone or in mixtures, topped the trial with superior ground cover.

Summer Performance

University study, the results showed RPR to

9

be superior to traditional perennial ryegrass

6

when evaluating traffic tolerance.

Intense Wear Tolerance 9 6 3 0

RPR Non-RPR Southeastern Turfgrass Research Center

3 0

RPR Iowa State University

Non-RPR

To learn more, visit: www.barusa.com

RPR® Varieties ‘Barbeta’

Leaf Color Chart

This regenerating perennial ryegrass exhibits extreme traffic tolerance with the ability to recover following significant wear events. This fine textured grass is endophyte enhanced

1

to provide additional stress tolerance. This variety is medium green in appearance, and responds very well to fertilizer applications.

2

‘Barlennium’ This turf-type perennial ryegrass exhibits rapid germination and exceptionally fast establishment. Its fine leaf texture, very dark

3

green color and excellent mowing quality make this dense turf widely adaptable for multiple uses.

‘Linn’ PR

4 ‘Barlibro’ RPR ‘Barbeta’ RPR

5

Bargamma ‘Barprium’ RPR

6

7

Barbeta

‘Barlennium’ PR

8

9

Traditional*

RPR® Products Turf Star® RPR® A mixture of RPR varieties and elite perennial

Characteristics

ryegrass, Turf Star RPR is the solution for all golf, sports, and recreational facilities where elite perennial ryegrass quality is required.

Color

Turf Star RPR’s extreme wear tolerance and

Turf Quality

ability to recover thin and damaged turf

Wear Tolerance

is unique to the industry. Extremely fast

Aggressiveness

germinating and quick to establish, Turf Star RPR can also be over-seeded into traditional

Mowing Frequency

cool season turf lawns, such as Kentucky

Close Mowing

bluegrass, fine fescue, and traditional

Tolerance

perennial ryegrass.

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