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The use of computer modelling to evaluate the agronomic, economic and environmental impacts of N management in contrasting organic rotations

Rayns, Francis; Schmutz, Ulrich; Firth, Chris; Thorup-Kristensen, Kristian; Zhang, Kefeng and Rahn, Clive (2006) The use of computer modelling to evaluate the agronomic, economic and environmental impacts of N management in contrasting organic rotations. In: Atkinson, C.; Ball, B.; Davies, D.H.K.; Rees, R.; Russell, G.; Stockdale, E.A.; Watson, C.A.; Walker, R. and Younie, D. (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 171-174.

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Summary

A new computer model (EU-ROTATE_N) has been developed with the aim of improving nitrogen management on all farms across Europe which include fi eld vegetables in their rotations. It brings together aspects of many existing models and contains a number of features to make it applicable to organic producers (e.g. taking account of nitrogen fixation by legume containing leys, nitrogen conservation by winter cover crops and nitrogen supply by manures and composts). A key feature is the model’s ability to simulate economic output and this enables it to be of value to policy makers when considering the impact of new measures to reduce environmental pollution. This paper describes the model and some initial work that has been conducted to evaluate it under UK organic field vegetable systems with contrasting fertility building strategies.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Organic farming, field vegetables, computer modelling, fertility building crops, rotational planning, farm economics
Subjects: Farming Systems > Farm nutrient management
Crop husbandry > Production systems > Vegetables
Farming Systems > Farm economics
Research affiliation: UK > Garden Organic (HDRA)
Denmark > AU - Aarhus University > AU, DJF - Faculty of Agricultural Sciences
UK > Colloquium of Organic Researchers (COR) > COR 2006
Deposited By: MILLMAN, Mrs Carol A
ID Code:10215
Deposited On:14 Dec 2006
Last Modified:12 Apr 2010 07:34
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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