Protein Content of Winter Wheat Varieties in Oklahoma — 2017–2018

August 2018

General Information
Protein is just one of many attributes that determine 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 commonly exist, variability in protein content among environments is generally much larger than variability in protein content among varieties. Factors such as N fertility and drought stress, for example, can sharply impact final wheat protein content.
To reflect these management and environmental impacts on wheat protein content, data are reported by variety and location in Table 1. In Table 2, we report the wheat protein content by variety as a deviation from location mean, as this allows for easier comparison among varieties across locations. Doublestop CL Plus, for example, is a variety which showed a positive deviation from the location mean in 92 percent of this year’s trials, indicating it has a tendency for above-average wheat protein content. Iba, on the other hand, showed a negative deviation from the location mean in 91 percent of the trials, indicating a tendency for lower than average wheat protein content. However, protein quantity should not be used as a barometer for protein quality (i.e., dough strength and functionality). There are a few exceptions to this, with Doublestop CL Plus being one example of relatively high protein content and protein quality.
Adequate N fertility as recommended by a recent soil test or sensor-based nitrogen management program can help ensure that varieties such as Iba produce wheat or flour protein within the acceptable range for end-use customers. 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 content. More information on end-use quality is available in Current Report CR-2165 Wheat and Flour Quality for Varieties Tested in OSU Variety Performance Tests.

Approximately 600-gram subsamples of wheat grain were collected from the OSU Wheat Variety Performance Test plots at harvest. These plots were well-fertilized and managed according to OSU Cooperative Extension recommendations. Additional information on test locations and management practices is available in Current Report 2143 2017-2018 Oklahoma Small Grains Variety Performance Tests on the web at Samples were stored in plastic containers for approximately one month following harvest. Samples were nondestructively analyzed for protein content on a 12 percent moisture basis using a Diode Array Near Infrared instrument (NIR) (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
Goodwell – Oklahoma Panhandle Research and Extension Center
Homestead – Brook Strader
Hooker – Dan Herald
Keyes – J.B. Stewart
Kildare – Don Schieber
Kingfisher – Tary Helt
Lahoma – OSU North Central Research Station
Lamont – Don & Roger Kirby
Marshall – Dean Fuxa
Thomas – Keith Miller & Bill Jackson
Union City – Don & Ray Bornemann
Walters – Jimmy Kinder


AgriMAXX Wheat
Matt Wehmeyer
7167 Highbanks Road
Mascoutah, IL 62258
Phone: (855) 629-9432
Variety: AM Eastwood

Steve Ahring
P.O. Box 7
Girard, KS 66743
Phone: (800) 962-5429
Varieties: AG Gallant, AG Icon, TAM 114

Colorado Wheat Research Foundation (PlainsGold)
Brad Erker
4026 S. Timberline Road. Ste. 100
Fort Collins, CO 80525
Phone: (970) 449-6994
Variety: Langin

CROPLAN by Winfield United
Paul Gregor
1080 County Road F West
Shoreview, MN 55126
Phone: (651) 375-6620
Variety: CP78-26

Dyna-Gro Seed
Ryan Klamfoth
Phone: (419) 310-6370
Variety: Long Branch

Kansas Wheat Alliance (KWA)
Daryl Strouts
1990 Kimball Ave.
Manhattan, KS 66502
Phone: (785) 320-4080
Varieties: Joe, Larry, Oakley CL, Zenda

Limagrain Cereal Seeds (LCS)
Drew Hendricker
2040 SE Frontage Road
Fort Collins, CO 80525
Phone: (970) 498-2218
Varieties: LCS Avenger, LCS Chrome, LCS Mint, LCS Pistol, T158

John Fenderson
1616 E. Glencoe Road
Stillwater, OK 74075
Phone: (620) 243-4263
Varieties: WB4269, WB4303, WB4458, WB4515, WB4721, WB-Grainfield, Winterhawk

Oklahoma Genetics Inc. (OGI)
Mark Hodges
P.O. Box 2113
Stillwater, OK 74076
Phone: (405) 744-7741
Varieties: Bentley, Doublestop CL Plus, Duster, Gallagher, Iba, Lonerider, Maton II, NF 101, NF 201, NF 402, Ruby Lee, Smith’s Gold, Spirit Rider, Stardust

AgriPro|Syngenta Seeds
Greg Gungoll
1517 Osage Ave.
Enid, OK 73703
Phone: (405) 714-2839
Varieties: Bob Dole, SY Achieve CL2, SY Benefit, SY Flint, SY Grit, SY Monument, SY Rugged

Watley Seed
Andy Watley
Box 51
Spearman, TX 79081
Phone: (806) 659-3838
Varieties: TAM 112, TAM 204



David Marburger
Small Grains Extension Specialist

Robert Calhoun
Senior Agriculturalist

Brett Carver
Wheat Breeder

Branden Watson
Graduate Research Assistant

Christopher Gillespie
Graduate Research Assistant

DASNR Extension Research CASNR
OCES  Contact
139 Agricultural Hall
Oklahoma State University
Stillwater, OK 74078