Rayns, Francis, Rosenfeld, Anton, Schmutz, Ulrich and Rahn, C. (Clive). (2009) A comparison of two models to predict nitrogen dynamics in organic agricultural systems. Aspects of Applied Biology, 93 . pp. 219-222. ISSN 0265-1491

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Abstract

Two publicly available crop/soil models were compared. These were the EU-Rotate_N model (www.warwick.ac.uk/go/eurotaten) and the NDICEA model (www.ndicea.nl). Each simulation was also compared to measured data from an organically managed site in the English Midlands. Results showed that, overall, EU-Rotate_N gave a better estimation of soil mineral nitrogen, particularly after the incorporation of a long-term fertility-building crop. This model has a lot of flexibility but is aimed at researchers and requires more work before it is ready to be used by farmers or advisors. The NDICEA model is much simpler to use with a user-friendly interface.

Item Type:	Journal Article
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Faculty of Science > Life Sciences (2010- ) > Warwick HRI (2004-2010)
Library of Congress Subject Headings (LCSH):	Nitrogen cycle, Soils -- Nitrogen content, Organic farming -- Great Britain, Geochemical modeling
Journal or Publication Title:	Aspects of Applied Biology
Publisher:	Association of Applied Biologists
ISSN:	0265-1491
Date:	2009
Volume:	93
Page Range:	pp. 219-222
Status:	Not Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Great Britain. Dept. for Environment, Food & Rural Affairs (DEFRA)
References:	Allen R G, Pereira L S, Raes D, Smith M. 1998. Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56. Rome: FAO of the United Nations. Koopmans C J, van der Burgt G. 2005. NDICEA as a user friendly model tool for crop rotation planning in organic farming. Poster presented at Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, 21–23 September 2005. Rayns F, Schmutz U, Firth C, Thorup-Kristensen K, Zhang K, Rahn C. 2006. The use of computer modelling to evaluate the agronomic, economic and environmental impacts of N management in contrasting organic rotations. Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, pp. 171–174. Smith J, Smith P, Addiscott T. 1996. Quantitative methods to evaluate and compare Soil Organic Matter Models. In Evaluation of Soil Organic Matter Models. Eds D Powlson, P Smith and J Smith. Berlin, Heidelberg: Springer-Verlag. Van der Burgt G J H M, Oomen G J M, Rossing W A H. 2006. The NDICEA model as a learning tool: experiences in 2005. Paper presented at Joint Organic Congress, Odense, Denmark, 30–31 May 2006.
URI:	http://wrap.warwick.ac.uk/id/eprint/2202

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