1. General Model Information

Name: Nitrogen Crop Response Model

Acronym: NCRM

Main medium: terrestrial
Main subject: agriculture, biogeochemistry
Organization level: ecosystem
Type of model: 2D,
Main application:
Keywords: nitrogen, fertilizer, N-response, N-fertilizer, crop response, N-cycle, crop residue incorporation, nitrate, leaching, soil, soil layers, yield, growth, rainfall, irrigation, temperature, humidity, climate, 2 D root development, online, www, interactive, N_ABLE


Ian E Currah

14, Eton Road,
Stratford-on-Avon, Warwickshire,
CV37 7EJ, UK
email: ian.currah@ibm.net


Greenwood, Rahn, Draycot


On-line dynamic simulation of response of 25 crops to applications of nitrogen fertilizers in 133 different climatic zones world-wide. Effects of organic material such as crop debris are taken into account. Results include effects on plant growth, soil conditions and leaching. Supporting documentation, diagrams and references are also on-line. This is a World Wide Web installation.

Flow diagram of the model

NCRM is the simplified Internet version of the N_ABLE Nitrogen Model, a stand-alone program developed at Horticulture Research International (HRI), UK by Clive Rahn and Ann Draycott (based on research models of Duncan Greenwood and Ann Draycott)

II. Technical Information

II.1 Executables:

Operating System(s): CGI Web server, Apply to authors.
Stand-alone version information

II.2 Source-code:

Programming Language(s): Apply to authors. FORTRAN, BASIC , HTML and Javascript

II.3 Manuals:

Apply to authors, User-friendly on-line instructions

II.4 Data:

Not applicable On-line input forms and weather data

III. Mathematical Information

III.1 Mathematics

Full references are on-line.

III.2 Quantities

See references on-line.

III.2.1 Input

On-line input forms are already filled with default data.

III.2.2 Output

Summary text output, detailed text output and graphical output are all on-line.

IV. References

Full list of references is on-line.

V. Further information in the World-Wide-Web

VI. Additional remarks

Full details are at the Web site
Last review of this document by: Ian E Currah Sat Apr 25 1998
Status of the document: Contributed by Ian E Currah
last modified by Joachim Benz Tue Feb 25 18:27:00 CET 2003

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