1. General Model Information
Name: Nitrogen Dynamics In Crop rotations in Ecological Agriculture
Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: compartment model
Keywords: soil, nitrogen balance, nitrogen dynamic, nitrogen availability, organic matter, crop rotation, water balance, capacity cascade soil water model
Wageningen Agricultural University
Dept. Ecological Agriculture
6709 RZ Wageningen
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
Operating System(s): PC >= 2 Mb RAM
Programming Language(s): Quattro Pro
III. Mathematical Information
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