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Managing nitrate pollution in a Tunisian irrigated area: A multi-criteria analysis approach AgEcon
Laajimi, Abderraouf; Ben Nasr, J.; Ferchichi, M..
In Tunisia, the extension of irrigated area is justified by its important role in the development and diversification of agricultural production. Nevertheless, the strong intensification of the agricultural activities may lead to the pollution of underground water resources due to an excess use of fertilisers and other chemical products. In fact, the high nitrate concentrations observed in some Tunisian irrigated areas, are related to the excessive use of nitrate fertilizers in intensive agriculture. The objective of the present study is to implement decision-making methods allowing a better combination of factors production by optimization of an economic objective and an environmental objective. This research is based on multi-criteria modelling through...
Tipo: Conference Paper or Presentation Palavras-chave: Nitrate pollution; Environmental impact; Multicriteria analysis; Environmental Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/44186
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Evaluating the efficiency of a N-input tax under different policy scenarios at different scales AgEcon
Petsakos, Athanasios; Jayet, Pierre-Alain.
Nitrate pollution from agriculture is an important environmental problem, caused by the excessive use of inorganic fertilizers. The internalization of this externality, via a tax on mineral nitrogen, could lead to a second best solution, reducing nitrate emissions. Several authors suggest that a reduction in agricultural support could produce similar results. In this paper we examine the effects of a nitrogen levy on nitrate pollution from agriculture in northern France under two different policy scenarios corresponding to (i) the Agenda 2000 and (ii) the Luxembourg reform of 2003, including the 2006 arrangement. The analysis aims at revealing what synergies or conflicts are created between a fertilizer levy and the policy scenarios, with respect to...
Tipo: Conference Paper or Presentation Palavras-chave: Crop model; Mathematical programming; Nitrogen response curves; Nitrate pollution; Nitrogen tax; Agricultural and Food Policy; Environmental Economics and Policy; Farm Management; Food Security and Poverty; Land Economics/Use; Production Economics.
Ano: 2010 URL: http://purl.umn.edu/109397
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Technical efficiency and environmental pressures of pig farms in Hungary AgEcon
Latruffe, Laure; Desjeux, Yann; Fogarasi, Jozsef; Bakucs, Lajos Zoltan; Ferto, Imre.
Pig farming is one of the strongest polluters of water resources due to its intensive production techniques and slurry rejection. Several European countries have already introduced environmental regulations aiming at reducing the pollution caused by nitrates from agricultural sources, but not yet Hungary. This paper investigates how Hungarian pig farms would be affected if such regulations are to be enforced. We calculate farm technical efficiency separately for two types of pig production systems – namely farrowing only and farrow-to-finish farms (FAFI farms) and finishing only farms (FI farms) – using 2001 data on pig activity and Data Envelopment Analysis (DEA). We then investigate whether environmental regulations would affect the farms’ technical...
Tipo: Conference Paper or Presentation Palavras-chave: Technical efficiency; DEA; Pig farms; Nitrate pollution; Hungary; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Security and Poverty; Land Economics/Use; Livestock Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/109385
Registros recuperados: 3
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