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Research ArticleResearch

Conservation tillage for long-term amelioration of plow pan soils

C. B. Elkins, D. L. Thurlow and J. G. Hendrick
Journal of Soil and Water Conservation May 1983, 38 (3) 305-307;
C. B. Elkins
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D. L. Thurlow
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J. G. Hendrick
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ABSTRACT:

Plow pans that restrict root growth, depriving plants of subsoil water and nutrients, cause problems in developing conservation tillage systems on many soils. Sub-soiling under the row at planting is an accepted practice that often deals effectively with the plow pan problem. But subsoiling requires high energy requirements, has short-term beneficial effects, and leaves an undesirable mix of soil horizons. A deep tillage system that requires less energy than subsoiling, provides long-term amelioration of plow pans, and does not mix soil horizons was investigated. A narrow, vertical slit is cut through the plow pan beneath the row at planting. The slit eliminates soil strength and low soil oxygen as deterrents to roots growing through the pan. Once the slit is filled with organic material from decaying roots, it becomes a lasting feature of the soil profile, promoting root growth through the plow pan for an indefinite period of time.

Footnotes

  • C. B. Elkins is a soil scientist and research leader. Soil and Water Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Auburn University, Alabama 36849; D. L. Thurlow is an associate professor, Department of Agronomy and Soils, Auburn University. Alabama 36849; and J. G. Hendrick is an agricultural engineer. National Tillage Machinery Laboratory. Auburn, Alabama 36830. This article is a contribution from ARS, USD A, and the Department of Agronomy and Soils, Alabama Agricultural Experiment Station, Auburn University.

  • Copyright 1983 by the Soil and Water Conservation Society

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Journal of Soil and Water Conservation: 38 (3)
Journal of Soil and Water Conservation
Vol. 38, Issue 3
May/June 1983
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Conservation tillage for long-term amelioration of plow pan soils
C. B. Elkins, D. L. Thurlow, J. G. Hendrick
Journal of Soil and Water Conservation May 1983, 38 (3) 305-307;

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Conservation tillage for long-term amelioration of plow pan soils
C. B. Elkins, D. L. Thurlow, J. G. Hendrick
Journal of Soil and Water Conservation May 1983, 38 (3) 305-307;
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