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1994 Winter Wheat Yields from On-Farm Tests in Adams County

Jerry Knodel, Tim Smith, Curtis Hennings, Steve Taylor, Grant Miller, and Bill Schillinger

Objective

To obtain better information on the performance of winter wheat varieties in
low-rainfall areas under actual field conditions.

Location: Several farms in Adams County
Annual precipitation: Less than 12 inches
Rotation: Winter wheat-summer fallow

Treatments

Lewjain, Eltan, Madsen, Rod, Rely, and Tres were each planted in single drill strips 1000 to 2500 feet long at five locations.

Data

1994 Grain Yield (bu/ac) from On-Farm Tests in Adams County

Variety J. Knodel T. Smith C. Hennings S. Taylor G. Miller Average

Lewjain 45.3 47.4 50.4 44.7 44.5 46.5a

Eltan 45.5 60.6 48.6 50.0 42.2 49.4a

Madsen 45.5 46.5 47.1 48.1 35.6 44.6a

Rod 51.6 45.2 50.3 46.4 33.1 45.3a

Rely 48.1 47.4 47.7 47.8 45.6 47.3a

Tres 48.4 45.0 50.8 47.7 36.9 45.8a

LSD (5%) 5.0

CV 8.2%

Conclusion

Although there was almost a 5 bushel difference in average yield between the highest and lowest performing variety, yields among varieties were not statistically different. Certified wheat seed was generously donated by United Grain Growers in Harrington, WA. Grant funds have been provided by the Lincoln-Adams Crop Improvement Association for continuation of this project.

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Hans Kok, WSU/UI Extension Conservation Tillage Specialist, UI Ag Science 231, PO Box 442339, Moscow, ID 83844 USA Redesigned by Leila Styer, CAHE Computer Resource Unit; Maintained by Debbie Marsh, Dept. of Crop & Soil Sciences, WSU