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Tillage in the growing season is ineffective as a tool of increased soil N mineralization

Thomsen, Ingrid Kaag and Sørensen, Peter (2004) Tillage in the growing season is ineffective as a tool of increased soil N mineralization. DARCOFenews (1).

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Summary

Soil tillage serves a number of purposes such as control of weeds, incorporation of crop residues and manures, and maintenance or improvement of soil mechanical properties, including seedbed preparations. As a side-effect, soil tillage may affect turnover of organic matter (OM) by changing the particle size and spatial distribution of crop and manure residues in soil and by increasing the intimacy of residue/soil contacts. By breaking soil structural elements, tillage may contribute further to N mineralization by exposing physically protected organic matter to microbial turnover. Therefore, adjusting the time, intensity and frequency of soil tillage operations may enable optimization of synchrony, defined as the matching through time of N availability and crop N demand. This idea was experimentally investigated in the present study.


EPrint Type:Journal paper
Subjects: Soil > Nutrient turnover
Research affiliation: Denmark > DARCOF II (2000-2005) > I. 4 (NIMAB) Enhanced bread wheat production
Deposited By: Thomsen, Senior scientist Ingrid Kaag
ID Code:4579
Deposited On:23 Mar 2005
Last Modified:12 Apr 2010 07:30
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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