1. General Model Information

Name: Nitrogen Dynamics In Crop rotations in Ecological Agriculture

Acronym: N_DICEA


Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: compartment model
Main application:
Keywords: soil, nitrogen balance, nitrogen dynamic, nitrogen availability, organic matter, crop rotation, water balance, capacity cascade soil water model

Contact:

G.J.M. Oomen
Wageningen Agricultural University
Dept. Ecological Agriculture
Haarweg 333
6709 RZ Wageningen
THE NETHERLANDS
Tel +31.8370.83522
Fax +31.8370.84995

Author(s):

G.J.M. Oomen

Abstract:

This nitrogen dynamics model is designed to calculate the availability of nitrogen in a crop rotation. It includes a simple water balance to estimate soil moisture content and water leaching. Mineralisation of initial soil organic matter, and of the consecutive additions of crop residues and organic manure to the soil, are calculated using Janssen's one parameter formula for the decomposition of organic matter with a correction for soil moisture and temperature. Crop uptake is based on actual yield data and derived amounts of crop residues and roots. Fixation by legume crops is estimated. A nitrogen balance is made including mineralisation, deposition, fixation, uptake and (leaching) loss.

Author of the abstract:
CAMASE Register of Agro-ecosystems Models


II. Technical Information

II.1 Executables:

Operating System(s): PC >= 2 Mb RAM

II.2 Source-code:

Programming Language(s): Quattro Pro

II.3 Manuals:



II.4 Data:



III. Mathematical Information


III.1 Mathematics


III.2 Quantities


III.2.1 Input

III.2.2 Output


IV. References

Habets, A.S.J. & G.J.M. Oomen, 1993.
Modellering van de stikstofdynamiek binnen gewasrotaties in de biologische landbouw.
Wageningen, Department of Ecological Agriculture, Wageningen Agricultural University.

V. Further information in the World-Wide-Web


VI. Additional remarks


Last review of this document by: T. Gabele: 07.07. 1997 -
Status of the document:
last modified by Joachim Benz Mon Jul 2 18:31:37 CEST 2007

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