Seed Research of Oregon Improving Turfgrass through Research Choosing a Bentgrass Dr. Leah A. Brilman Director of Research and Technical Services Seed Research of Oregon
Apr 01, 2015
Seed Research of Oregon Improving Turfgrass through Research
Choosing a Bentgrass
Dr. Leah A. Brilman
Director of Research and Technical Services
Seed Research of Oregon
Seed Research of Oregon Improving Turfgrass through Research
Choosing a Bentgrass
Old and New Choices in Cultivars
and Species
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass decisions • Greens or fairways
• Wear - Amount, type and season
• Environmental stresses - heat, cold, humidity
• Budget and equipment for maintenance
• Type of course
Private or public
• Clientele expectations and competition
• Water quality and quantity
• Environmental concerns
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass breeding goals • Disease resistance
– Dollar spot– Brown patch– Anthracnose– Snow mold– Take-all resistance
• High density for greens - resist weed invasion• Winter active growth - winter color retention• Salt tolerance• Wear tolerance• Dense types without excessive thatch
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass breeding goals • Greens
Ballmark repair and recoverySpeed of greensStress tolerance
• Fairways
Divot repair and recovery
Stress tolerance• Both
Thatch controlPoa annua control
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass trials • Combine different species and types one trial
Differential herbicide/fungicide responseDifferent requirements for thatch control
• NTEP Trials at Universities
Most not managed as on golf courseLess mowing, mowing height differentNo trafficFungicide/no fungicide split but often only fungicide side reported
• New NTEP - no split. More trials with reduced fungicides
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass trials • NTEP/GCSAA On site trials
Putting Green only
High end courses - intensive management
Thatch control often geared to heavy
thatch producers
Preventative fungicide
Only four disease ratings in all trials
• Best trials on golf courses - often no feedback
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass trials Management influences - Four sands / One cultivar
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Traditional varieties - Penncross, Seaside
Lower density, horizontal growth• Standard improved varieties for greens and fairways :
SR 1119, SR 1120 (Brighton), Sandhill, Ninety- six two, L-93, Providence, SR 1020, Crenshaw, Seaside II, Pennlinks, Penneagle, Trueline, Backspin, Putter, Cato, Century, Princeville, Cobra, Viper, Grand Prix, Bengal
• Moderate density, more upright, versatile• Less thatch for fairways, disease and stress resistance important
characterstics
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • High density varieties - greens
Penn G-2, G-6, A-1, A-4, G-1 - all from selections
at Augusta, GA - very similar genetics• High thatch producers - must have budget and equipment to control• Slower repair aerification holes, ball marks• Use smaller diameter holes, topdress frequently• Upright, dense growth - good at low height• Good wear tolerance
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • New moderate density improved varieties
SR 1150 (SRX 1PDH), LS-44, Alpha, Independence, Penneagle II, Pennlinks II,
Benchmark DSR, Memorial, Kingpin• Intermediate versatile varieties - greens, tees and
fairways
007 (DSB), MacKenzie (SRX 1GPD) • New high density varieties
Tyee (SRX 1GD), Declaration, T-1, Authority, Shark
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Divot repair rate
Traditional > Improved >Versatile> High Density
Cover may be greater but not fully repaired
Higher density varieties sometimes ballmark less but recover slower
All bentgrasses - use sand/seed repair mix
Add Chewings fescue for faster germination• Green speed and smoothness
Some Improved cultivars faster than High Density. Dependent on health of plant and management practices.
l
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Ball mark repair study Bakalyar, Honors Course, Tennessee. Ball mark created as a hole.
– Sunny and shady plots healed differently– Repair rate related to growth pattern of cultivar - heat tolerant cultivars better in summer, Winter-active
types better in October– No consistent pattern in type
Mean % repair after 28 days over 4 dates
SR 1020 42.3 Penn G-2 38.2
Pennlinks 41.0 Crenshaw 38.0
L-93 39.5 Penncross 36.5
Penn A-1 39.0
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Damage control study Clemson, University
– Repair of damage from 2 inch hole in June and August– Repair rate differed by type - standard and improved typically better than dense.
Percent repair after 6 weeks 1998Cultivar June Aug. Cultivar June Aug. Penncross 43 a 33 cd Crenshaw 33 b-e 45 abSouthshore 41 ab 36 a-d Penn G-2 32 b-e 36 a-dPutter 41 ab 39 abc Crens/Cato 31 cde 37 a-dPennlinks 41 ab 33 cd Cato 30 cde 37 a-dMariner 39 abc 28 d Penn A-1 30 cde 35 a-dViper 38 a-d 37 a-d Penn G-1 30 cde 30 cdSR 1020 37 a-d 35 a-d Providence 29 de 35 a-dSR 1119 37 a-d 34 bcd Penn A-4 29 de 35 a-dL-93 36 a-e 45 ab Penn G-6 27 e 33 cdDominant 34 a-e 46 a
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Dollar spot - most fungicides used to control. Variability in resistance in trials by location and management
Mean % dollar spot on greens 1999-2002 data, 3 locations
Cutlivar % DS Cultivar % DS
Providence 3.0 Penn A-2 6.7
Sandhill 3.4 Ninety-six two 6.8
Penn G-6 3.4 Penncross 7.6
Penn G-1 3.8 Backspin 7.8
Bengal 4.3 Penn A-4 10.2
Pennlinks 4.4 Crenshaw 11.2
Brighton 4.7 Imperial 11.4
Penn A-1 4.8 Century 16.8
L-93 5.6
SR 1119 6.2 LSD@5% 8.3
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Dollar spot - most fungicides used to control. Variability in resistance in trials by location and management
Dollar spot ratings grown on green 1999-2002, Mean of 12 location
Cutlivar Mean Cultivar Mean
Penncross 7.9 SR 1119 6.7
L-93 7.9 Imperial 6.5
Pennlinks 7.7 Brighton 6.5
Penn A-1 7.6 Providence 6.2
Penn A-2 7.6 Backspin 5.9
Penn G-6 7.2 Ninety-six two 5.6
Sandhill 7.2 Century 5.4
Penn G-1 7.1 Crenshaw 5.2
Bengal 7.1
Penn A-4 7.1 LSD@5% 0.8
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Dollar spot - most fungicides used to control. Variability in resistance in trials by location and
managementDollar spot ratings grown on green 1993 - 97, Mean of 12 location
Cutlivar Mean Cultivar Mean
L-93 7.7 Penn A-4 6.5
Penn A-1 7.4 Mariner 6.1
Pennlinks 7.4 Imperial 5.7
Providence 7.2 SR 1020 5.6
Penncross 7.1 Backspin 5.5
Seaside 7.0 Century 4.9
Penn G-2 6.8 18th Green 4.5
Penn G-6 6.8 Crenshaw 4.5
Trueline 6.6
Southshore 6.5 LSD@5% 0.4
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Dollar spot resistance• Two to three major genes involved - only one strain used to determine. Additional genes may be
necessary for resistance to other strains.• Density of grass important, leaf to leaf transmission. Penncross sometimes shows less due to
low density• Reduce hours of moisture - mowing, irrigation, rolling• Nitrogen management - low levels currently used for faster greens increase levels• Usually good resistance - Providence, SR 1119, L-93, Cato, Sandhill, Penn A-1, G-1, G-2, G-6,
Pennlinks• New cultivars with promise - Declaration, 007, Pennlinks II, Memorial, SR 1150, 13-M, Benchmark
DSR, Kingpin
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Brown patch - Variability in resistance in trials by location and management
Brown patch ratings grown on green 1999-2002, Mean of 7 locations
Cutlivar Mean Cultivar Mean
Ninety-six two 7.2 Century 6.2
Penn G-6 6.9 Penn A-2 6.2
Sandhill 6.7 Bengal 6.1
SR 1119 6.7 Backspin 5.9
Brighton 6.5 Imperial 5.7
L-93 6.4 Penn A-1 5.7
Pennlinks 6.4 Providence 5.6
Penn G-1 6.3 Penn A-4 5.6
Crenshaw 6.3
Penncross 6.3 LSD@5% 1.2
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Thatch Development - measured after 1 and 2 years
Thatch in mm grown on green 1999, 2000, Mean of 2 locations
Cutlivar Mean Cultivar Mean
Penn A-4 13.9 Sandhill 12.1
Penn A-1 13.6 Crenshaw 12.0
Penn A-2 13.3 L-93 12.0
Century 12.8 Pennlinks 12.0
Penn G-6 12.8 Providence 11.9
Penn G-1 12.8 Imperial 11.9
Ninety-six two 12.8 SR 1119 11.8
Bengal 12.3 Penncross 11.6
Brighton 12.2
Backspin 12.2 LSD@5% 1.9
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Thatch Control• Critical in newer bentgrasses • Thatch development dependent on cultivar, environment, nitrogen, irrigation, mowing
height, traffic• Topdressing weekly or bimonthly most critical. Irrigate to integrate during heat stress
rather than brushing. • Hollow-tine aeration most critical in maintaining reduced organic matter, high saturated
hydraulic conductivity, high root oxygen content - reduces quality short term• Hydojet, solid tines, spiker should start 5-8 weeks after hollow-tine to maintain SHC
during summer• Vertical mowing, grooming can help reduce OM - can influence quality.
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Cultivars that develop more thatch. Recommended primarily for greens only. Higher budget for
maintenance.• Penn A-2• Penn A-2• Penn A-4• Penn G-1• Penn G-2• Penn G-6
• New cultivars that develop more thatch• Declaration (Bentgrass bloat)• Tyee (SRX 1GD)• T-1• Authority (235050)• Kingpin• Shark
Seed Research of Oregon Improving Turfgrass through Research
Why Blends/Mixtures
• Increased genetic diversity
• Strengths and weaknesses matched
• Natural Selection for microenvironments
• Match color, growth form carefully
Seed Research of Oregon Improving Turfgrass through Research
Science and nonscience of blends
Kentucky bluegrass
(Vargas and Turgeon, 1980. Proc. Third ITRC 45-52.)
Melting-out resistance of blend of two
cultivars intermediate between same
cultivars in monostands
Inoculum from susceptible cultivar reduced
resistance of resistant cultivar
Blends of two cultivars generally show resistance intermediate between each alone
Seed Research of Oregon Improving Turfgrass through Research
Science and nonscience of blends
Creeping bentgrass
(Abernathy et al. 2001 Crop Sci 41:806-809.)
Dollar spot resistance among blends of creeping bentgrass cultivars
Penn A-4, Crenshaw, L-93, Mariner and Penncross, monostands and two or three-way blends
L-93 suppressed dollar spot in blends, Crenshaw increased
Blending Crenshaw with any reduced dollar spot centers 46 to 67% and blighted areas 71 to 98%
Seed Research of Oregon Improving Turfgrass through Research
Science and nonscience of blends
Seed Research of Oregon Improving Turfgrass through Research
Example:Dominant X-treme Creeping Bentgrass Blend• Blend of SR 1119 and Providence
• Excellent for northern areas to transition zone
• Combines heat tolerance and cold tolerance
• Disease resistance
• Similar in color, texture
• Little segregation
Seed Research of Oregon Improving Turfgrass through Research
Stress tolerance in bents One month with no water 2002 NJ drought
Seed Research of Oregon Improving Turfgrass through Research
Science and nonscience of blends
Color and density
should be matched
Large variability in colors - blue-green to true greens
Variability in density makes for uneven surface
Seed Research of Oregon Improving Turfgrass through Research
Science and nonscience of blends
Color and density
should be matched
Large variability in colors - blue-green to true greens
Variability in density makes for uneven surface
Penncross
Tyee
Seed Research of Oregon Improving Turfgrass through Research
Creeping bentgrass • Additional characteristics important in choosing cultivars or making blends• Winter-active growth - critical in Southern areas where bent is used for resorts,
CA, PNW• Snow mold resistance• Heat / drought resistance• Salinity tolerance - most studies do not properly evaluate since not mown or in
sand medium– Primarily monitor top growth– Recent study in Colorado better - repeat with more cultivars
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass Conversion• From Poa - Trials at Rutgers University• Poa aerated, topdressed, verticut before overseeding,
seed broadcast• No effect from PGRs• Seeding date influenced establishment with July 1, Aug.
17 dates best one study, June 19, Aug. 20 another study.• SR 7200 velvet best, A-4, L-93, Providence all better than
Penncross• Can use water injection for placement • Velocity can provide better, safer, faster conversion
Seed Research of Oregon Improving Turfgrass through Research
Bentgrass Conversion• From one bent to another
More difficult if original bent is healthyMore difficult under fairway conditions
• Prepare as for Poa conversionVerticut, aerate, top dress. The aim is to weaken existing
bent to give seedlings a chance.• Further reduce growth with PGR or Roundup• Multiple seedings needed• Dormant seedings useful in some locations• Seeding in late spring, summer more competitive
Seed Research of Oregon Improving Turfgrass through Research
Roundup Ready BentgrassScotts and Monsanto
USDA Application was refiled , Environmental Impact Assessment currently underway
Currently fairway variety, greens type later
Parents used in backcross have high dollar spot resistance, excellent agronomic characterstics
Poa annua control - must rotate with other herbicides
Stewardship program to prevent escape
Available USA (?)
Seed Research of Oregon Improving Turfgrass through Research
New Creeping Bentgrasses007 (DSB) MacKenzie
Tyee (SRX 1GD) Benchmark DSR
SR 1150 (SRX 1PDH) Alpha
T-1 13-M
Declaration Kingpin
Authority(235050) Pennlinks II
Memorial (A03-ED1) CY-2
Independence Cobra II (ISI-AP 9)
LS-44
Seed Research of Oregon Improving Turfgrass through Research
Tyee Creeping Bentgrass(SRX 1GD)
• Dr. Leah Brilman + Rutgers• Stress tolerant germplasm• Very high density for greens• High summer density, no bloat• Bright medium green color• High turf quality• Dollar Spot resistance level
similar to L-93• High Brown Patch resistance• High fall color retention
Tyee
Photo Puyallup, WA November, 2004
Seed Research of Oregon Improving Turfgrass through Research
Tyee Creeping Bentgrass
Rutgers Univ.
July, 2004
Greens Trial
High stress environment
Tyee rated a 9 by supers
Germination in 4 days
Tyee
Seed Research of Oregon Improving Turfgrass through Research
007007 Creeping Bentgrass
• Developed by Dr. Rich Hurley, in cooperation with Rutgers University
• Excellent Dollar Spot resistant• Related to L-93• High turf quality• Excellent for greens, tees and
fairways• Moderately high density• Bright dark green colorPicture Arkansas May 2004
007
Seed Research of Oregon Improving Turfgrass through Research
007007 Creeping Bentgrass
Rutgers Univ.
July, 2004
Greens Trial
High stress environment007
Seed Research of Oregon Improving Turfgrass through Research
Rutgers University -2002 Greens
High dollar spot
resistance
Seed Research of Oregon Improving Turfgrass through Research
SR 1150 Creeping BentgrassSRX 1PDH
• Rutgers University
– Dr. Stacy Bonos• Dollar Spot resistant• Moderately high density for
greens and fairways• Color, texture match with
SR 1119, Brighton, Sandhill• High turf quality• High Brown Patch resistance• High performance in Reduced
Fungicide Trials
Picture Rutgers Univ., Fairway Trial, July 04
SR 1150
Seed Research of Oregon Improving Turfgrass through Research
Percent dollar spot ratings of Creeping Bentgrass cultivars on a fairway or tee at Lexington, KY. 2003 NTEP – Fairway or tee 2004 Data
Cultivar % dollar spot
Declaration 0.6
Pennlinks II 3.4
SR 1150 (SRX 1PDH) 5.3
Kingpin 5.4
Mackenzie 7.4
Penncross 8.6
L-93 8.7
SR 1119 8.9
Alpha 9.1
Shark 9.3
T-1 12.2
Independence 17.1
LSD @ 5% 4.5
New Creeping bentgrass
Seed Research of Oregon Improving Turfgrass through Research
Mackenzie Creeping Bentgrass
Rutgers Univ.
July, 2004
Fairway Trial
High stress environment
Dr. Jim Murphy likes this one for fairways
High performer greens and fairways
SR 1119 Mackenzie
Seed Research of Oregon Improving Turfgrass through Research
MacKenzie Creeping Bentgrass
Utah State University
July, 2005
Comparison with Kingpin
Brighter color, densitySR 1119 MacKenzie
Kingpin Mackenzie
Seed Research of Oregon Improving Turfgrass through Research
New Creeping Bentgrass 2003 NTEP grown on sand, Mean of 12 locations
2004 data, 1-9, 9 = Ideal Turf
Cutlivar Mean Cultivar Mean
Tyee (SRX 1GD) 6.3 LS-44 5.9
Authority (235050) 6.2 MacKenzie 5.9
CY-2 6.1 Bengal 5.9
Penn A-1 6.1 Alpha 5.7
T-1 6.1 Benchmark DSR 5.7
Shark (23R) 6.1 13-M 5.7
Declaration 6.1 Kingpin (9200) 5.7
007 (DSB) 6.0 Pennlinks II 5.6
Memorial (A03-ED1) 6.0 Penncross 5.1
Independence 5.9 LSD@5% 0.3
Seed Research of Oregon Improving Turfgrass through Research
New Creeping Bentgrass Quality ratings of Creeping Bentgrass cultivars grown on a green at 10 locations using an 1/8 inch (3.2 mm) or lower cutting height
2003 NTEP – Putting Green 2005 Data
Turfgrass Quality ratings 1-9, 9 = Ideal Turf
Cultivar Quality Cultivar Quality
Declaration 6.8 Kingpin 6.4
MacKenzie 6.7 Memorial 6.4
Authority 6.7 T-1 6.3
Tyee (SRX 1GD) 6.6 Benchmark DSR 6.2
CY-2 6.6 Alpha 6.0
Penn A-1 6.5 Pennlinks II 5.5
007 (DSB) 6.5 Penncross 5.0
LSD @ 5% 0.2
Seed Research of Oregon Improving Turfgrass through Research
New Creeping Bentgrass 2003 NTEP grown on sand, Logan, UT
2004 data, 1-9, 9 = Ideal Turf
Cutlivar Mean Cultivar Mean
007 (DSB) 7.7 13-M 6.3
Shark 7.1 Alpha 6.3
Authority (235050) 6.8 Benchmark DSR 6.3
T-1 6.8 Bengal 6.1
Independence 6.6 CY-2 6.1
Penn A-1 6.6 LS-44 6.1
Tyee (SRX 1GD) 6.6 Kingpin (9200) 6.0
MacKenzie 6.6 Pennlinks II 5.5
Memorial (A03-ED1) 6.4 Penncross 4.5
Declaration 6.4 LSD@5% 0.8
Seed Research of Oregon Improving Turfgrass through Research
New Creeping BentgrassCultivar Mean Quality Rutgers Cultivar Mean Quality RutgersTyee (SRX 1GD) 7.5 Century 5.0Shark (23R) Mt. View 6.6 SR 1119 5.0CY-2 Snow Brand 6.6 Pennington 13-M 4.8Lesco Authority (ended year down) 6.6 L-93 4.7Penn G-2 6.6 Simplot Alpha 4.6MacKenzie 6.4 Imperial 4.5Penn G-6 6.1 Kingpin ( 9200) 4.4007 (DSB) 6.0 Pennlinks II 4.4Penn A-2 6.0 Penneagle 4.4Simplot T-1 5.8 (BP, CS) Crenshaw 4.4DLF IS AP 9 5.7 Pennlinks 4.2Links Seed LS-44 5.6 TMI Benchmark DSR 3.9Penn A-4 5.4Scotts Memorial 5.3 LSD@5% 0.7Barenbrug Bengal 5.2
Seed Research of Oregon Improving Turfgrass through Research
New Creeping Bentgrasses
Alpha and T-1
T-1 dark blue-green color
T-1 high density
Seed Research of Oregon Improving Turfgrass through Research
New Creeping BentgrassesKingpin and MacKenzie
MacKenzie brighter green, Kingpin blue-green.
Seed Research of Oregon Improving Turfgrass through Research
New Creeping BentgrassesKingpin and MacKenzie
LS-44 - developed from L-93 germplasm
Density not as great as 007
Benchmark DSR - moderate density, good dollar spot resistance
Seed Research of Oregon Improving Turfgrass through Research
New Creeping Bentgrasses• Declaration - Developed for improved dollar spot resistance.
Fertility may need to be watched. Develops Bentgrass Bloat - summer scalping
• Memorial - Improved dollar spot resistance.
• Authority and Shark (23R) - Developed from same material. High dollar spot resistance, quality
• CY-2 - developed in Japan for dollar spot resistance
Seed Research of Oregon Improving Turfgrass through Research
SRO Creeping Bentgrasses• All developed for high performance with lower nitrogen use. Levels
similar to what is being used by superintendents
• Less summer bentgrass bloat so reduced summer scalping potential
• High summer density for wear tolerance
• Little or no winter purpling
• High density can dominate Poa
Seed Research of Oregon Improving Turfgrass through Research
Velvet Bentgrass Agrostis canina • Best putting surface
• Wear tolerant - better than any creeping
• Excellent drought and heat resistance
• Best shade tolerance
• Low fertility (after established)
• Best in acid sands or soils - needs acid
fertilizer and iron in alkaline conditions
• Reduced water requirements - 40 to 60% ET
Seed Research of Oregon Improving Turfgrass through Research
Velvet Bentgrass Puyallup,
Washington
Greens Trials
Color difference
between velvets
and creepers
Seed Research of Oregon Improving Turfgrass through Research
Velvet Bentgrass• Thatch control important
• Ball marks
• Less than creeping bents, repair similar to high density creeping bents
• Fairway usage
• Thatch control, holds ball upright, wear tolerant, dollar spot resistant
Seed Research of Oregon Improving Turfgrass through Research
Velvet Bentgrass Eagle’s Nest
Golf Course
Ontario, Canada
Greens, tees, and fairways velvet bentgrass
Seed Research of Oregon Improving Turfgrass through Research
Colonial bentgrass Agrostis capillaris• Fairway usage
• Dollar spot resistant against most strains
• More brown patch susceptible than creepers
• Less thatch than creepers
• Best at low fertility
• Better wear resistance than creepers
• Hold ball upright
• Low water use - in Utah maintain density 50% ET
Seed Research of Oregon Improving Turfgrass through Research
Colonial bentgrass• In fairway or tee usage best combined with
Chewings and/or creeping red fescue
Use fine fescues in divot repair mixes
• More sensitive to ethofumesate
• Varieties - SR 7150, SR 7100, Bardot, Egmont, Tiger, Tiger II, Alistair, Glory, Heriot, Revere, Viter
• Use low fertility
Seed Research of Oregon Improving Turfgrass through Research
SR 7150 Colonial bentgrass• Darkest green colonial bentgrass
Color similar to other turf species
• High dollar spot resistance
• Improved brown patch resistance
• Best at low fertility
• Blend with Chewings or other fine fescues
• Fairways or home lawns
• Overseeding on greens
Seed Research of Oregon Improving Turfgrass through Research
Colonial bentgrass• Low Input Trial
• Oregon State Univ.
• 1lb. N Preplant
• Irrigated for Establishment
• No fertilizers/pesticides
• Mown at 1/2”, Clippings removed
• Irrigation only if severely stressed
Seed Research of Oregon Improving Turfgrass through Research
Colonial bentgrassBest Performers after 7 years
Mix #9 Mix #7 Mix # 4
90% SR 5100 95% SR 5100 50% SR 3100
10% SR 7100 5% SR 7100 45% SR 5100 5% SR 7100
Upright, dense, high quality turf with few weeds, not segregated.
Colonial/Chewings Fescue also tested at URI for 5 years.
SR 5100 is Chewings fescue
SR 3100 is hard fescue
Seed Research of Oregon Improving Turfgrass through Research
Dryland Colonial‘Highland’A. castellana A. capillaris
blue-green true green
stolons stolons
long rhizomes usually no rhizomes
scalp/false crown more upright
Seed Research of Oregon Improving Turfgrass through Research
Choosing your bentgrass • Decide which species will meet your needs best
• Define your budget
• Which management options, diseases, other characteristics are your primary concerns
• Do you want a cultivar with a track record or willing to look at newest options
• Resources and people available to help in your decision
• New construction, renovation or conversion
• 2003 Fairway Trial many top ranked heavy thatch