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Research ArticleResearch

Comparison of methods used to calculate tillage translocation using plot-tracers

D.A. Lobb, T.A. Quine, G Govers and G.J. Heckrath
Journal of Soil and Water Conservation October 2001, 56 (4) 321-328;
D.A. Lobb
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T.A. Quine
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G Govers
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G.J. Heckrath
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ABSTRACT:

Tillage translocation is measured in the studies of soil dispersion and soil crosion. The translocation of soil by tillage is normally measured with a tracer. Using plots, a volume of soil is labelled and then tilled. There are two methods of calculating translocation using plot-tracers. For the more common method, translocation is calculated directly from the distributions of tracer before and after tillage (Distribution-Curve Method). For the less common method, a summation curve is generated from the distribution of tracer after tillage by employing convolution, and translocation is calculated from this curve (Summation-Curve Method). In this paper, the two methods are described and compared using hypothetical and experimental data. Both methods provide accurate measures of gross translocation. The Summation-Curve Method provides a measure of error associated with gross translocation and a more thorough characterization of the dispersion of translocated soil; therefore, it was considered to be the superior of the two methods.

Footnotes

  • David A. Lobb is an assistant professor in the Department of Soil Science at the University of Manitoba in Winnipeg, Canada; Timothy A. Quine is a senior lecturer in the Department of Geography at the University of Exeter in Exeter, United Kingdom; Gerard Govers is a professor at the Katholieke Universiteit Leuven, in Leuven, Belgium; Goswin J. Heckrath is a research scientist, Danish Institute of

  • Copyright 2001 by the Soil and Water Conservation Society

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Journal of Soil and Water Conservation: 56 (4)
Journal of Soil and Water Conservation
Vol. 56, Issue 4
Fourth Quarter 2001
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Comparison of methods used to calculate tillage translocation using plot-tracers
D.A. Lobb, T.A. Quine, G Govers, G.J. Heckrath
Journal of Soil and Water Conservation Oct 2001, 56 (4) 321-328;

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Comparison of methods used to calculate tillage translocation using plot-tracers
D.A. Lobb, T.A. Quine, G Govers, G.J. Heckrath
Journal of Soil and Water Conservation Oct 2001, 56 (4) 321-328;
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