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Synopsis: The amount and height of crop residue influenced the effectiveness of tillage sequences to conserve residue on the soil surface. Tillage sequences produced no noticeable effect on soil cloddiness at the end of season. Better weed control was obtained with tillage sequences including one one-way disking. Tillage sequences seem to influence wheat yields more in dry years than wet years.
2 Extension Agronomist, Box Butte Experiment Station, University of Nebraska, Lincoln, Nebraska.
3 Agricultural Engineer, Research Investigations Leader (deceased), and Soil Scientist, respectively, USDA, Manhattan, Kansas. Grateful acknowledgement is made to D. W. Fryrear and Leon Lyles, Agricultural Engineers, USDA; to D. V. Armbrust, Soil Scientist, USDA; and to Paul Ehlers, Superintendent of the Box Butte Experiment Station, University of Nebraska, for their assistance and cooperation in conducting these experiments.
Received for publication May 28, 1964.
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