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Danner Diker Versus Chisel for Fall Tillage

Objective

Compare reservoir tillage versus chisel for fall stubble treatment before summerfallow.

Location: Reardan, WA
Annual precipitation: 15 inches
Rotation: Oats

Treatments

Chisel - 9 inches deep on 16 inch centers
Dammer Diker - 13 inches deep on 36 inch centers

Comments

The Dammer Diker is a subsoiler followed by a paddle wheel which creates pits that could potentially increase water infiltration. The plots were 60 by 602 ft. The Diker and chisel treatments were applied to oat stubble the fall before summer fallow. Rely club wheat was planted the fall following summer fallow, and 24 ft strips were harvested from the center of each plot for yield.

Data

Yield, bu/ac

Treatment	Rep 1	Rep 2	Rep 3	Rep 4	Average
Chisel	17.1	16.3	15.1	17.0	16.4a
Diker	15.3	15.5	15.6	13.9	15.1a
LSD (5%)					2.4
CV					6.9%

Conclusion

There was very little potential for runoff during the winter before fallow, so we would not expect the fall tillage to have much effect. Yield, protein and test weight did not differ between treatments. Average protein was 11.3%, and average test weight was 57.9 lb/bu.

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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