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WSU Wilke Research and Extension Farm Operation, Production, and Economic Performance for 2015

WSU Wilke Research and Extension Farm Operation, Production, and Economic Performance for 2015

Aaron Esser, WSU Lincoln-Adams Area Extension, Derek Appel, WSU Lincoln-Adams Area Extension

The 320-acre WSU Wilke Research and Extension Farm remains in a direct-seed cropping system using no-till fallow, winter wheat, and spring cereals, providing assistance to University faculty with small plot research. This annual publication focuses on farmers and crop consultants in the intermediate cropping zone and outlines operations and production on the Wilke Farm.

The Washington State Oilseed Cropping Systems Research and Extension Project (WOCS) is funded by the Washington State Legislature to meet expanding biofuel, food, and feed demands with diversified rotations in wheat based cropping systems. The WOCS fact sheet series provides practical oilseed production information based on research findings in eastern Washington. More information can be found at: http://css.wsu.edu/biofuels/.

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Current Situation

The WSU Wilke Research and Extension Farm is a 320­acre facility located on the eastern edge of Davenport, WA, and is split (north and south) by State Highway 2. Washington State University maintains and operates this facility. The focus of this annual technical bulletin is on farmers and crop consultants in the intermediate cropping zone (12 to 17 inches of annual precipitation). It also provides documentation of the operations and production on the Wilke Farm to assist University faculty with small plot research experiments.

The Wilke Farm remains in a direct-seed cropping system utilizing no­till fallow, winter wheat, and spring cereals. Broadleaf crops remain a viable option and are substituted for spring and winter cereals when weed pressures and market prices create opportunities for profitable production. The predominant cropping system practiced by farmers in this region is a 3­year rotation, which includes summer fallow, winter wheat, and spring cereals. Farmers are interested in intensifying rotations to reduce fallow years and increase crop diversity to improve long­term agronomic and economic stability.

The south side of the farm is divided into seven plots; three plots are in a more traditional 3­year crop rotation, and four plots are in an intensified 4­year crop rotation. The north side of the farm remains in an intensified rotation that forgoes summer fallow and is in continuous cereal grain production. In 2010 through 2013, cereal rye (feral rye) infestations caused cropping decisions to be altered on the Wilke Farm, especially in the no-till fallow winter wheat portion of the rotations (these changes are noted in red italic in the data tables). In the fall of 2013, the no­till fallow winter wheat portion of the rotation was seeded as planned according to the rotation without alteration due to cereal rye.

Soil compaction and wireworm population data are collected each spring from GPS­recorded locations within each plot. Soil samples are also collected from these GPS locations prior to seeding each plot, and fertilizer is applied according to soil sample results and WSU recommendations.

Operation

Winter wheat into fallow was seeded with Crop Production Services Case IH direct­seed hoe drill with Anderson openers on 12­inch spacing, and recrop winter wheat was seeded by Mike Abbot’s Case IH direct­seed hoe drill with Kyle openers on 12­inch spacing. The spring crops were seeded with Rob Dewald’s 5810 Bourgault hoe drill on 12­inch spacing. The farm was harvested with the farm’s John Deere 6622 combine from July 27 through August 4.

Winter Wheat (3­year Plot 2; 4­year Plot 6; Continuous North)

Plot 2 and Plot 6 were seeded to ‘Crescent’ soft white winter club wheat on September 10, 2014, at 70 lb/acre into no­till fallow. Seed was treated with 1.0 oz/cwt CruiserMaxx Cereals plus Vibrance. Liquid ammonium Thio­Sul, 12­0­0­26, ammonium polyphosphate, 10­34­0­0, and Power Up, 6­18­6­1, were applied at a rate of 9­12.5­1­11 with the seed. In Plot 2, anhydrous ammonia was applied below the seed at 93 lb N/acre. Post-emergence herbicide application was applied on April 20, 2015. This application included 4.75 oz/acre Osprey, 13.5 oz/acre Huskie, 13.5 oz/acre Bison, 64 oz/acre UAN, and 2.0 qt/100 gal non­ionic surfactant. In Plot 6, anhydrous ammonium was applied below the seed at 68 lb N/acre. Post­emergence herbicide application was applied on April 20, 2015. This application included 13.5 oz/acre Huskie, 13.5 oz/acre Bison, 64 oz/acre UAN, and 2.0 qt/100 gal non­ionic surfactant.

Continuous North was seeded to ‘Sprinter’ hard red winter wheat on October 8, 2014, at 77 lb/acre into ground previously cropped to spring wheat. Seed was treated with 0.33 oz/cwt CruiserMaxx Cereals. Liquid ammonium Thio­Sul and 10­34­0­0 were applied at a rate of 7­10­0­1 with the seed. Anhydrous ammonium was applied below the seed at 47 lb N/acre. Post­emergence herbicide application was applied on April 20, 2015. This application included 4.75 oz/acre Osprey, 13.5 oz/acre Huskie, 13.5 oz/acre Bison, 64 oz/acre UAN, and 2.0 qt/100 gal non­ionic surfactant. Post­harvest herbicide application was applied on August 5, 2015, because of heavy broadleaf weed pressure. This application was applied at 20 gal/acre and included 48 oz/acre Gramoxone, 5 qt/100 gal Class Act, 2 oz/acre Interlock, and 12 qt/100 gal Solution 32.

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