DLF International Seeds (US)
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KEYSTONE/Lolium perenne

Perennial ryegrass
High performance

Rating
DensityWear toleranceColorDisease resistance

Dark Green Color
Consistent
High Disease resistance
Low Maintenance


Quick Facts 

Consistency is the keyword describing the regular high performance of KEYSTONE. In the final report from NTEP-USA published recently, KEYSTONE shows consistent high ranking whether expressed as lowest/highest score over all locations or when expressed as "sum of ranks". The consistency also shows in the wide adaptation to various uses from golf fairways via athletic fields to home lawns. KEYSTONE is perfect in blends for professional or private use. Throughout spring, summer and autumn the live ground cover ratings of KEYSTONE are consistently good. So is the resistance towards all major turfgrass diseases like Leafspot, crown rust, snow mold, dollar spot and red thread. The visual performance is underlined by a very high density and fine leaf texture. The color is intense dark green. KEYSTONE performs very well in the NTEP "home lawn" trials, meaning high performance with a low input of nutrients, water and pesticides.  


GROWTH HABIT
Bunch

ESTAB. RATE
Medium: 7-10 days

LHC TOL. to .5"
Very Good

MOW. FREQUENCY
2x p/week

TRAFFIC TOL- Brink.
Very Good

THATCH PROD.
None

COMP. MIX
Fair-Good

NITROGEN REQ.
Medium-High

SHADE TOLERANCE
Fair-Good

COLD TOLERANCE
Fair-Good

DROUGHT TOL.
Fair

ET RATE mm/day
High 9-10

ENDOPHYTE
Yes>40%

SALINITY TOL. mmhos
6 - poor

SEEDING RATE
6-8 lbs/1000 sf