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Evaluating the efficiency of a N-input tax under different policy scenarios at different scales 31
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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Greek cotton farmers' supply response to partial decoupling of subsidies 31
Rozakis, Stelios; Tsiboukas, Kostas; Petsakos, Athanasios.
A mathematical programming model based on a countrywide sample of farms is used to assess the impacts of the new C.A.P on the supply of the cotton sector in Greece. Results show a decrease in cotton cultivated area along with the introduction of a new production system called "semi-abandonment cotton". Farm income is practically unchanged, largely due to the decoupled payments. When these payments are not considered, farm income turns negative in some cases, thus leading towards abandonment of activities.
Tipo: Conference Paper or Presentation Palavras-chave: Cotton; C.A.P; Decoupling; Mathematical programming; Agricultural and Food Policy; Agricultural Finance.
Ano: 2008 URL: http://purl.umn.edu/44018
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Integrating risk and uncertainty in PMP models 31
Petsakos, Athanasios; Rozakis, Stelios.
Positive Mathematical Programming (PMP) is one of the most commonly used methods of calibrating activity linear programming (LP) models in agriculture. PMP applications published thus far focus on the estimation of a farm’s nonlinear cost or profit function and rely on the recovery of unobserved or implicit information that can explain the initial model’s inability to calibrate. In this paper we use the PMP procedure to calibrate an expected utility model under the assumption that this implicit information can reveal a farmer’s profit expectations and risk attitude. The perfect calibration shows that PMP can be applied not only to LP models, but also to models that incorporate risk and this provides an interesting alternative to the traditional PMP...
Tipo: Conference Paper or Presentation Palavras-chave: E-V analysis; Expected utility; Farm model; Positive Mathematical Programming; Risk.; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/114762
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