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Published online 1 January 1965
Published in Agron J 57:49-51 (1965)
© 1965 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Performance of Tillage Implements in a Stubble Mulch System. II. Effects on Soil Cloddiness1

N. P. Woodruff2, C. R. Fenster3, W. S. Chepil2 and F. H. Siddoway2

Synopsis: Under field conditions, effects of stubble mulch tillage implements on soil cloddiness varied widely from year to year. During initial tillage, 2-inch chisels, 32-inch sweeps, and a one-way disk operated 4 inches deep produced a more cloddy soil surface than a rodweeder with shovels, an 8-foot V-sweep, or a one-way disk operated 2 inches deep. During subsequent tillage, a given implement increased or decreased cloddiness depending on type of previous tillage and soil moisture at time of tillage.

1 Contribution from the Soil and Water Conservation Research Division, ARS, USDA, and the Kansas and Nebraska Agricultural Experiment Stations. Published with the approval of the Directors as Paper Numbers 848 and 1521, Journal Series, Kansas and Nebraska Agricultural Experiment Stations, respectively.

2 Agricultural Engineer, Research Investigations Leader (deceased), and Soil Scientist, respectively, USDA, Manhattan, Kansas.

3 Extension Agronomist, Box Butte Experiment Station, University of Nebraska, Lincoln, Nebraska. 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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Copyright © 1965 by the American Society of Agronomy.