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FrostProof

Diploid Annual Ryegrass

Cold hardy, high yielding diploid ryegrass.

A recent release from the University of Florida, FrostProof is an improved ryegrass that handles cold weather and provides superior forage production.

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Features

Cold Hardy

Specifically bred for improved cold tolerance, FrostProof has many potential uses for both southern and northern regions.

Disease Resistant

FrostProof’s better crown rust resistance allows it to keep producing in tough conditions.

High Yielding

This dependable diploid provides high yields for grazing, hay, haylage, baleage and silage.

Uses

Grazing

Yes. Yes. And YES! Graze it with all livestock species. FrostProof is a great option for both rotational grazed and continuous grazed pastures. As is true with other ryegrasses, continuous grazing can adversely affect yield and survivability. If possible, always choose rotational grazing practices.

Hay and Silage

Looking for a single-cut harvest? No problem. Bale it, roll it, wrap it, or chop it. Then feed it as needed. Good cold and disease resistance equals more quality feed in the bag.

Wildlife

Draw in the big racks or grow the herd for next year. FrostProof comes up quick and is ryegrass-sweet; ideal for wildlife food plots.

Cover Crop

Need a cover crop to go through winter? FrostProof is up for the challenge. Grab that excess nitrogen, break up your hard soil, build the carbon bank. High tonnage means lots and lots of biomass. Use by itself or as part of a multi-species cover crop mixture.

HistoryBred for Cold Told Tolerance

FrostProof is the result of a multi-location breeding process including cycling germplasm at the Noble Foundation in Ardmore, OK, selections in Scottsbluff, NE, as well as germplasm from selection in North Carolina and Florida. FrostProof has been evaluated extensively for over ten years before being released to the marketplace.

Illustration showing the breeding history of FrostProof.

Regional PerformanceRegional Performance

In the South

Resists Cold Winters and Disease Pressures

Southerners need ryegrass that can perform well under grazing and also be resistant to cold snaps and disease. During the winter of 2016-17, North-Central Florida experienced nine separate freezing events with the coldest temperature of 25°F on March 16, followed by a high temperature of 88°F on March 22 and 92.5°F on April 2. Crown rust was also a significant disease that "became epidemic" by early March. FrostProof's ability to resist crown rust gave it the ability to continue to produce high yields. Even under these tough conditions, FrostProof was one of the highest performing entries with excellent early season yields, as well as overall forage yields.

University of Florida

Forage Yields (DM/A)

Gainesville, FL

|

2016-2017

EntryJan. 12Feb. 28Apr. 26Total
Highest yield4922*4612*3200*11681*
FrostProof4764*4211*220011175*
Nick4487*4359*208010926*
Jackson4563*3740*226510568*
Nelson4444*32032610*10257*
Marona4708*4114*10079829*
Marshall4389*330720789774
Jumbo4110*318320309323
Marmid39873956*10078950
Tetrastar4099*316814548721
Arnie4178*312912738580
Vortex3421343016808531
Lonestar370631608297695
Lowest yield185416767454484
LSD* (0.05)8339128061804
*Equal to top score based on LSD.
Complete results available upon request.

University of Florida

Crown Rust

Gainesville, FL

|

March 6, 2017

EntryDisease Level
Least Disease1.7*
Jumbo2.3*
Nelson2.7*
FrostProof3.7*
Marmid3.7*
Jackson4.7
Arnie5.3
Lowboy5.3
Lonestar6.0
Passerel Plus6.0
Marshall8.3
Greatest Disease8.3
LSD± (0.05)2.1
Crown Rust Rating: 0 - 10, where 0 = no disease and 10 = 100% coverage or death.
*Equal to top score based on LSD.

Dependable Diploid for Southern Hay, Pastures and Silage

What do we mean by dependable? When disease comes, it’s not knocked out. When there’s a cold snap, it’s not hammered. It can be grazed intensely, and still be there. FrostProof has been tested in numerous locations throughout the southern United States and has good yields. These tables are a sampling of some of the results.

Dry Matter Yields (Total DM/A)

2016-2017

VarietyTallassee, ALHeadland, ALCrossville, ALThree location ave.
Highest yield4413*4749 *10326*6496
FrostProof3815*4429*8881*5708
Nelson3415*4662*8991 *5689
TAMTBO3815 *3991*8359*5388
Wax Marshall29784063 *8815 *5285
Diamond T3283*4315*79415180
McKinley3269*3651*8557 *5159
Passarel Plus4045*296782025071
Double Diamond3614*4157*73255032
Andes3219*343280024884
Flying A31034078*73754852
Gulf (Local)2836 65354686
Lowest yield2712261864003910
LSD (0.1)12009602049 
*Yielded statistically the same as the top-yielding entry.

In the North

Good Performance for Forage and Cover Crop Use

FrostProof has been tested in multiple northern locations for use as a short-term spring forage crop and as a cover crop. Data from Kentucky indicates FrostProof has high forage yield potential. Data from Ohio shows that FrostProof is very cold tolerant.

University of Kentucky

Forage Yield Trials

Lexington, KY

|

2016-2017

VarietyHeight (inches)Yield (Tons DM/A)
  4/185/186/20Total
Highest score212.00*1.54*0.66*3.69*
FrostProof211.91*1.140.233.28*
TetraPrime141.201.54*0.363.11
Gulf211.770.940.272.98
Bruiser211.86*0.920.192.96
Feast II121.211.190.352.75
Lsd20.220.320.190.43
*Equal to top score based on LSD
Planted Sept 7, 2016

Ohio State University

Cover Crop Variety Trial

South Charleston, OH

|

2017-2018

Entry% Winterkill 3/26/18Yield (Total DM/A)
LowBoy50.68
FrostProof92.40
Koga101.79
Kodiak132.16
Winterhawk132.17
McKinley161.65
New Dawn181.74
Sheriff281.45
LSD P=.0511.730.52

Yield Data

Florida

University of Florida

Forage Yields (DM/A)

Gainesville, FL

|

2016-2017

EntryJan. 12Feb. 28Apr. 26Total
Highest yield4922*4612*3200*11681*
FrostProof4764*4211*220011175*
Nick4487*4359*208010926*
Jackson4563*3740*226510568*
Nelson4444*32032610*10257*
Marona4708*4114*10079829*
Marshall4389*330720789774
Jumbo4110*318320309323
Marmid39873956*10078950
Tetrastar4099*316814548721
Arnie4178*312912738580
Vortex3421343016808531
Lonestar370631608297695
Lowest yield185416767454484
LSD* (0.05)8339128061804
*Equal to top score based on LSD.
Complete results available upon request.

Louisiana

Louisiana State University

Annual Ryegrass Trials (Total DM/A)

2017-2018

VarietyFranklintonWinnsboroTwo Location Total
Highest yield8746*7886* 
FrostProof7619*7490*15109
Andes7782*706914851
Winterhawk74367405*14841
Jumbo7613*7155*14768
Prine7685*694814633
Double Diamond7726*688114607
Flying A7514705414568
Diamond T7273701114284
McKinley63247886*14210
Ribeye7175699114166
Nelson Tetraploid68457202*14047
Triangle T7020700714027
Gulf Certified6884706613950
Lagniappe7165665313818
Spicer6811700313814
Grits7018677813796
Jackson65877194*13781
Herdsman7218642313641
Earlyploid6964643513399
Passerel Plus6910648913399
Angusta6175671812893
Lowest yield54925882 
LSD (.1)1200774 
*Equal to top score based on LSD.
Complete results available upon request.

Alabama

Dry Matter Yields (Total DM/A)

Multiple Locations

|

2016-2017

VarietyTallassee, ALHeadland, AL
Highest yield4413*4749*
FrostProof3815*4429*
Nelson3415*4662*
TAMTBO3815 *3991*
Wax Marshall29784063*
Diamond T3283*4315*
McKinley3269*3651*
Passarel Plus4045*2967
Double Diamond3614*4157*
Andes3219*3432
Flying A31034078*
Gulf (Local)2836 
Lowest yield27122618
LSD (0.1)1200960
*Yielded statistically the same as the top-yielding entry.

Dry Matter Yields (Total DM/A)

Tallassee, AL

|

2019-2020

VarietyYield (Total DM/A)
Highest yield*2944
FrostProof*2752
Wax Marshall*2554
Passerel Plus2434
Nelson2305
Flying A2249
Trial average2222
Winterhawk2197
Double Diamond2023
TAMTBO1938
Diamond T1791
Lowest yield1532
LSD (0.1461
*Yielded statistically the same as the top-yielding entry.

Tennessee

University of Tennessee

Forage Yield (Tons DM/A)

Crossville, TN

|

2018

VarietyApr. 10May 2May 29Total
Highest score2.531.77*1.77*4.91*
Koga1.881.071.77*4.72*
FrostProof1.591.46*1.304.35*
Angusta1.721.26*1.254.24*
Kodiak1.551.241.454.23*
Passerel Plus1.471.50*1.224.19*
Credence1.561.30*1.103.97
GRAZER1.671.37*0.933.97
Maximus1.670.731.033.42
LSDns¹0.520.311.04
*Yielded statistically the same as the top‐yielding variety.
¹Non‐significant at the 0.05 level.
Nitrogen application: 45 lb/acre at planting, 60 lb/acre at green‐up, 30 lb/acre after first harvest.

Dry Matter Yields (Tons DM/A)

Crossville, TN

|

2016-2017

VarietyYield (Tons DM/A)
Highest yield5.95*
Kodiak4.83
Nelson4.64
FrostProof4.47
Angusta4.44
Credence4.31
Vortex4.28
McKinley4.27
Winterhawk4.27
Andes4.23
Jackson4.18
Arnie3.78
LSD (0.1)0.77
*Yielded statistically the same as the top-yielding entry.

Texas

Texas Trial Results (Six Harvests – Total DM/A)

Overton, TX

|

2017-2018

VarietyTotal Season
Highest12116*
FrostProof10385*
Kodiak10314*
Maximus9869
Gulf9803
TAMTBO9566
Tetrastar9301
Nelson9125
Winterhawk9009
Jackson8693
Ribeye8426
Passerel Plus8016
TAM 907885
Prine7628
Fria7227
LSD (0.05)2081
*Equal to top score based on LSD. 
Planted Oct 5, 2017.
Complete results available upon request.

Kentucky

University of Kentucky

Forage Yield Trials

Lexington, KY

|

2016-2017

VarietyHeight (inches)Yield (Tons DM/A)
  4/185/186/20Total
Highest score212.00*1.54*0.66*3.69*
FrostProof211.91*1.140.233.28*
TetraPrime141.201.54*0.363.11
Gulf211.770.940.272.98
Bruiser211.86*0.920.192.96
Feast II121.211.190.352.75
Lsd20.220.320.190.43
*Equal to top score based on LSD
Planted Sept 7, 2016

Ohio

Ohio State University

Cover Crop Variety Trial

South Charleston, OH

|

2017-2018

EntryYield (Tons DM/A)
FrostProof2.40
Winterhawk2.17
Kodiak2.16
Koga1.79
New Dawn1.74
McKinley1.65
Sheriff1.45
LowBoy0.68
LSD P=.050.52

New York

Cornell University

Forage Yields (Tons DM/A)

Ithaca, NY

|

2018

VarietyAugust 2October 252018 Total
FrostProof2.27*0.90*3.17*
Feast II1.740.99*2.73
True1.760.78*2.54
LSD0.200.200.23
Sown May 18, 2018.
*Statistically equal to top score.

Forage Quality

In 2017–2018, FrostProof was trialed in Crossville, TN. In addition to forage yield, University of Tennessee evaluators sampled entries for forage quality at each of the three cuttings. This chart compares FrostProof to the mean data of the 44 other entries.

University of Tennessee

Forage Quality

Springfield, TN

|

2019-2020

Harvest CPADFNDFTDN
April 22FrostProof8.2938.3558.5958.43
April 22Average*10.5025.7039.8071.70
      
May 31FrostProof8.4738.7055.8958.07
May 31Average*7.7037.7061.8059.10
*Average included 25 entries.

University of Tennessee

Forage Quality

Crossville, TN

|

2018

HarvestVarietyCPADFNDFTDN
April 10FrostProof18.3028.5057.6069.00
April 10Trial mean16.5030.2056.5067.30
      
May 2FrostProof12.4629.8046.0567.70
May 2Trial mean12.6030.9049.1066.60
      
May 29FrostProof11.6035.0755.3762.43
May 29Trial mean11.9034.4053.1063.10
Nutritive values represented at 100% DM Basis for CP, crude protein; ADF, acid detergent fiber; NDF, neutral detergent fiber; TDN, total digestible nutrients; (Analysis performed using Near Infrared Spectrometer [NIRS] Technology) Target stage of growth for harvest was late boot. Grass Hay Equation (NIRS Consortium, 2017).

Planting

Prior to Planting

For optimal performance, prior to planting, obtain a soil test. Amend soil according to recommendations and fertilize after planting according to recommendations and use. Optimal pH Range is 6.0–7.0.

When to Plant

FrostProof can be planted throughout the year. However, maximum utilization will be obtained by planting in the fall as soon as adequate moisture is available. If planted at other times of the year, performance will be limited.

How to Plant

FrostProof can be drilled or broadcast into either a prepared seedbed or an existing sod bed. For prepared seedbed, lightly disc and pack well. For existing sod bed, reduce existing sod height as much as possible.

Fertilization

Application of fertilizer (following soil test recommendations) throughout the growing season and/or use of legumes will provide maximum forage tonnage and root growth.

Seeding Rate - New Pastures25–35 lbs/ac
Seeding Rate - Overseeding10–15 lbs/ac
Planting Zones (map)green
Planting Depth⅛–½"
Optimal pH Range6.0–7.0
Germination5–10 days
Planting zones

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