Jon Iverson, Langdon, N.D., and Robert Holzwarth, Hazelton, S.D., are among the national winners in the National Wheat Yield Contest.

The contest is divided into winter wheat and spring wheat categories, with two subcategories — dryland and irrigated. Yields are ranked by the percentage increase over USDA average yield for the county.

Iverson placed second and Holzwarth third in the dryland spring wheat division. Iverson had a yield of 97 bushels per acre that was 80.69% over the county average yield. Holzwarth’s entry yielded 102 bushels per acre, 65% over his county average yield.

Phillip Gross, of Washington, had the highest yield in the contest — 182 bushels per acre. His entry was in the irrigated winter wheat category.

National winners by division, rank, name, state, bushels per acre and variety are:

Winter wheat irrigated
1) Ty Anderson, Wyoming, 146.52, WY-Cowboy

2) Marc Arnusch, Colorado, 162.17, WB4303

3) Nathan Franklin, Kansas, 144.07, WB-CEDAR

4) Travis Freeburg, Wyoming, 113.35, AgriPro AP503

5) Nathan Rea, Oregon, 161.99, Limagrain Drive

Winter wheat dryland
1) Brandon Friesen, Kansas, 115.26, WB-Grainfield

2) Everett Tallman, Colorado, 72.80, Plains Gold Byrd

3) Matt Schupbach, Oklahoma, 94.70, WB4303

4) Mark Knobel, Nebraska Winter Wheat-Dryland; 119.00, AgriPro Sunrise

5) Brian Cochrane, Washington, 92.00, WaState Otto

Spring wheat irrigated
1) Dan Mills, Oregon, 137.85, WestBred Solano

2) Terry Wilcox, Idaho, 143.91, WB9668

3) James Getzinger, Washington, 152.92, WestBred Solano

Spring wheat dryland
1) Paul Solem, Minnesota, 103.42, WB9479

2) Jon Iverson, North Dakota, 97.57, Croplan 3530

3) Robert Holzwarth, South Dakota, 102.58, University of Minnesota Bolles

4) Doug Stout, Idaho, 114.05, WB9668

5) John Yerger, Montana, 58.78, Croplan HRS 3100

State winners were also named in each category.

The National Wheat Foundation organized the contest, which is in its second year. The sponsors were BASF, Croplan/Winfield, Indigo Ag, John Deere, McGregor, Monsanto and Syngenta. National winners will be recognized at the 2018 Commodity Classic in Anaheim, California, Feb. 27-March 1.

Find list of state winners and official rules and entry forms for 2018 at wheatfoundation.org.