Use of available information at a European level to construct crop nitrogen response curves for the regions of the EU
| Autor: | Nadine Brisson, Jean Roger-Estrade, Caroline Godard, P.-A. Jayet, C. Le Bas |
|---|---|
| Přispěvatelé: | Institut Polytechnique LaSalle Beauvais, Agronomie, Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Economie Publique (ECO-PUB), Agroclim (AGROCLIM), Institut National de la Recherche Agronomique (INRA), InfoSol (InfoSol), AgroParisTech-Institut National de la Recherche Agronomique (INRA), UE Agroclim (UE AGROCLIM), Unité INFOSOL (ORLEANS INFOSOL) |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Decision support system
EXPERT RULES Yield (finance) Context (language use) Agricultural engineering NITROGEN FERTILIZATION Agricultural economics FERTILISATION AZOTEE MODELE ECONOMIQUE AGRIENVIRONMENTAL POLITICS MODELE AGRONOMIQUE 0502 economics and business AGRONOMIC MODEL Production (economics) Agricultural policy AGRONOMIE 2. Zero hunger business.industry 05 social sciences [SDV.SA.AEP]Life Sciences [q-bio]/Agricultural sciences/Agriculture economy and politics 04 agricultural and veterinary sciences Render farm DECISION SUPPORT Agriculture 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Animal Science and Zoology Economic model 050202 agricultural economics & policy business Agronomy and Crop Science ECONOMIC MODEL |
| Zdroj: | Agricultural Systems Agricultural Systems, Elsevier Masson, 2008, 97 (1-2), pp.68-82. ⟨10.1016/j.agsy.2007.12.002⟩ |
| ISSN: | 0308-521X |
| DOI: | 10.1016/j.agsy.2007.12.002⟩ |
| Popis: | Nowadays European agriculture is evolving in a context where policy-making and environmental concerns play a key role. To better assess agro-environmental policies, the AROPAj agricultural supply model needs to take into account the technical characteristics of crop management for different farms. A method to build up specific relationships between yield and nitrogen fertilization that takes into account agronomic techniques is proposed in this paper. The nitrogen response curve is based on an exponential function that integrates economic properties consistently from an agronomic point of view. In AROPAj, individual production systems (farm types) do not have a given location within a specified region and in databases technical information is scarce. The method involves determining technical and physical characteristics, inputs that allow the STICS crop model to assess the yield response to nitrogen of each crop on every farm type. From this information, a nitrogen response curve can be drawn up for each crop of each one of the farms. It can take into account both nitrogen from purchased fertilizer and nitrogen from animal effluents produced on farm. The method was designed to be adaptable to any European region, and tests carried out on two French regions covering a wide range of situations (crops, soils, climates and techniques) showed it was able to cope with varying prices and environments. The agronomic consistency of STICS inputs and curve shapes was also checked. When incorporated into the AROPAj economic model, the response curves can be used to render farms more sensitive to agricultural policy scenarios, by allowing their optimal fertilization level to be adjusted. |
| Databáze: | OpenAIRE |
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