General Information

Protein is just one of many attributes that determines end-use quality and marketability of winter wheat. In fact, some millers and bakers would argue that functionality of wheat protein is more important than the quantity of protein. While varietal differences exist, variability in protein among environments is generally much larger than variability among varieties. Factors such as nitrogen (N) fertilization and drought stress, for example, can sharply impact final wheat protein concentration.

To reflect these management and environmental impacts on wheat protein concentration, data are reported by variety and location in Table 1. In Table 2, the wheat protein concentration is reported by variety as a deviation from the location mean. This allows for easier comparison of wheat protein among varieties across locations. Doublestop CL Plus and Green Hammer, for example, showed positive deviation from the location mean in about 95% of this year's trials, indicating a tendency for above-average wheat protein concentration. Iba, on the other hand, showed a negative deviation from location mean in 85% of the trials, indicating a tendency for lower-than-average wheat protein concentration. Adequate and timely nitrogen fertility as recommended by a recent soil test or sensor-based nitrogen management program can help ensure varieties with lower than average protein produce wheat or flour protein within the acceptable range for the end users.

However, protein quantity should not be used as a barometer for protein quality (i.e., dough strength and functionality). Although, there are few exceptions to this, with Doublestop CL Plus being one example. Iba is also a prime example of how protein data can sometimes be misused, as the functionality of the protein in Iba is above average, which can offset lower absolute protein concentration. More information on end-use quality is available in Current Report 2165 Wheat and Flour Quality for Varieties Tested in the 2016 OSU Variety Performance Tests.

Procedures

Approximately 600-gram subsamples of wheat grain were collected at harvest from four field replicates of all entries for each OSU Wheat Variety Performance Test. Each test was properly fertilized and managed according to OSU Extension recommendations. Additional information on test locations and management practices is available in Current Report 2143 2019-2020 Oklahoma Small Grains Variety Performance Tests online at www.wheat.okstate.edu. Samples were analyzed nondestructively immediately after harvest for wheat protein concentration on a 12% moisture basis, using a Diode Array Near Infrared (NIR) moisture and protein determinator (model DA 7200, Perten Instruments, Sweden).

Funding provided by:

• Oklahoma Wheat Commission
• Oklahoma Wheat Research Foundation
• Oklahoma Cooperative Extension Service
• Oklahoma Agricultural Experiment Station
• Entry fees from participating seed companies

We sincerely thank our variety trial cooperators for donation of land, time and resources. Variety trial cooperators include:

• Afton – Greg Leonard
• Altus – OSU Southwest Research and Extension Center
• Alva – Jerad Bradt & Wes Mallory
• Apache – Bryan Vail
• Balko – Teryl Rorabaugh
• Buffalo – NRCS
• Cherokee – Kenneth Failes
• Chickasha – OSU South Central Research Station
• El Reno – Jerry Lingo
• Goodwell – Oklahoma Panhandle Research and Extension Center
• Homestead – Brook Strader
• Hooker – Ernest & Dan Herald
• Keyes – J.B. Stewart
• Kildare – Don Schieber
• Kingfisher – Tary Helt
• Lahoma – OSU North Central Research Station
• Lamont – Don & Roger Kirby
• Thomas – Brownie Brown
• Walters – Jimmy Kinder

Table 1. Wheat protein concentration (12% moisture basis) of varieties and experimental lines tested in the 2019-2020 Oklahoma Wheat Variety Performance Tests.

Note: underline values are not statistically different from the greatest value within a column (i.e., location).

Continue Table 1.  Wheat protein concentration (12% moisture basis) of varieties and experimental lines tested in the 2019-2020 Oklahoma Wheat Variety Performance Tests.

Note: underline values are not statistically different from the greatest value within a column (i.e., location).

Table 1. Wheat protein content (12 percent moisture basis) of varieties and experimental lines tested in the 2018-2019 Oklahoma Wheat Variety Performance Tests (cont'd).

Note: underline values are not statistically different from the greatest value within a column (i.e., location).

Continue Table 1. Wheat protein content (12 percent moisture basis) of varieties and experimental lines tested in the 2018-2019 Oklahoma Wheat Variety Performance Tests (cont'd).

Note: underline values are not statistically different from the greatest value within a column (i.e., location).

 
Table 2. Wheat protein concentration relative to the location mean (expressed as a deviation) for varieties and experimental lines in the 2019-2020 Oklahoma Wheat Variety Performance Tests.

Continue Table 2. Wheat protein concentration relative to the location mean (expressed as a deviation) for varieties and experimental lines in the 2019-2020 Oklahoma Wheat Variety Performance Tests.

Table 2. Wheat protein concentration relative to the location mean (expressed as a deviation) for varieties and experimental lines in the 2019-2020 Oklahoma Wheat Variety Performance Tests (cont'd).

Continue Table 2. Wheat protein concentration relative to the location mean (expressed as a deviation) for varieties and experimental lines in the 2019-2020 Oklahoma Wheat Variety Performance Tests (cont'd).

Participating Seed Companies

AgriMAXX Wheat Company
Matt Wehmeyer
7167 Highbanks Road
Mascoutah, IL 62258
Phone: (855) 629-9432
Email: matt@agrimaxxwheat.com
www.agrimaxxwheat.com
Variety: AM Cartwright, AM Eastwood

AgriPro
Greg McCormack
8750 NW 66th St.
Silver Lake, KS 66539
Phone: (620) 532-6283
Email: greg.mccormack@syngenta.com
www.agriprowheat.com
Varieties: AP EverRock, Bob Dole, SY Achieve CL2, SY Benefit, SY Rugged, SY Wolverine

AGSECO, Inc.
Steve Ahring
P.O. Box 7
Girard, KS 66743
Phone: (620) 724-6223
Email: steve@delangeseed.com
www.agseco.com
Varieties: AG Icon, TAM 114

CROPLAN by Winfield United
Cameron Aker
500 North 1st street
Vincent, IA 50594
Garrison, ND 58540
Phone: (515) 356-4524
Email: claker@landolakes.com
www.croplan.com
Variety: CP7010, CP7869, CP7909

Dyna-Gro Seed
Shawn Carter
3492 Long Prairie Road Suite 200
Flower Mound, TX 75022
Phone: (318) 282-9804
Email: shawn.carter@nutrien.com
www.dynagroseed.com
Variety: Long Branch

Kansas Wheat Alliance (KWA)
Daryl Strouts
1990 Kimball Ave. Suite 200
Manhattan, KS 66502
Phone: (785) 320-4080
Email: kwa@kansas.net
www.kswheatalliance.org
Varieties: KS Dallas, KS Silverado, KS Western Star, Zenda

Limagrain Cereal Seeds (LCS)
Nathan Miller
6414 N Sheridan street
Wichita, KS 67204
Phone: (316) 755-2042
Email: nathan.miller@limagrain.com
www.limargraincerealseeds.com
Varieties: LCS Chrome, LCS Photon AX, T173

Oklahoma Genetics Inc. (OGI)
Mark Hodges
201 South Range Road
Stillwater, OK 74074
Phone: (405) 744-4347
Email: hodgesm1@cox.net
www.okgenetics.com
Varieties: Baker's Ann, Bentley, Doublestop CL Plus, Duster, Gallagher, Green Hammer, Iba, Lonerider, OK Corral, Ruby Lee, Showdown, Skydance, Smith's Gold, Spirit Rider

PlainsGold
(Colorado Wheat Research Foundation)
Brad Erker/Tyler Benninghoven
4026 S. Timberline Road Suite 100
Fort Collins, CO 80525
Phone: (970) 449-6994
Email: tbenninghoven@coloradowheat.org
www.plainsgold.com
Variety: Canvas, Crescent AX, Guardian, Langin

WestBred
John Fenderson
1616 E. Glencoe Road
Stillwater, OK 74075
Phone: (620) 243-4263
Email: john.fenderson@bayer.com
www.westbred.com
Varieties: WB4269, WB4401, WB4515, WB4595, WB4699, WB4792