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| Registros recuperados: 31 | |
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| Serra, Teresa; Zilberman, David; Goodwin, Barry K.; Hyvonen, Keijo. |
| The objective of this research is to determine the contribution of recent agricultural policy reforms in the E.U. on the use of crop protection products. Specifically, we concentrate on the 1992 CAP reforms. Our theoretical model adopts the multi-output generalization of the Lichtenberg-Zilberman damage control technology model developed by Chambers and Lichtenberg. In the empirical application, farm-level data for a sample of French farms are utilized. Results suggest that price effects on the usage of crop protection products are always more elastic than the compensatory payment effects. This result indicates that a policy reform consisting of a reduction in price-support measures in favor of direct payments to farmers, such as the 1992 CAP reform,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agricultural and Food Policy; Environmental Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/20043 |
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| Lambarraa, Fatima; Gil, Jose Maria; Serra, Teresa. |
| Spain occupies the first position in the European and Mediterranean rankings of citrus production and trade. In our analysis we assess the technical efficiency with which this sector is operating. The main objective of this study is to analyze productivity and technical efficiency of Spanish citrus sector through citrus farms with high orange production. A stochastic frontier production model is estimated in which the technical inefficiency effects are defined by the time-varying inefficiency model. A primal approach is used to decompose Total Factor Productivity (TFP) growth into its various components. Results indicate improvement in efficiency scores of Spanish citrus farms along the period studied. Allocative efficiencies, technical efficiency change,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Productivity Analysis. |
| Ano: 2007 |
URL: http://purl.umn.edu/9393 |
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| Serra, Teresa; Zilberman, David. |
| Our paper looks at how price volatility in the Brazilian ethanol industry changes over time and across markets. Demand and supply forces in the energy and food markets are likely to ensure that crude oil, ethanol and feedstock prices co-move in the long-run. Hence, when assessing price volatility changes and spillovers in the ethanol industry, one should also pay attention to the notion of cointegration. Until recently, the methods proposed to estimate cointegration relationships, have not explicitly considered time varying volatility in the data. Seo (2007) suggests an estimator of the cointegration vector that explicitly models conditional heteroskedasticity. More specifically, he proposes a maximum likelihood estimator that estimates the error... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Volatility; Ethanol; Cointegration; Demand and Price Analysis; Research Methods/ Statistical Methods; Q11; C32. |
| Ano: 2009 |
URL: http://purl.umn.edu/49940 |
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| Serra, Teresa; Stefanou, Spiro E.; Gil, Jose Maria; Featherstone, Allen M.. |
| This paper assesses the impacts of decoupled government transfers on production decisions of a sample of Kansas farms observed from 1996 to 2001. Our model allows for risk, risk attitudes and the intertemporal investment decisions. We also allow for different adjustments of the decision variables depending on the predominant economic conditions. The theoretical model is estimated using the threshold regression methods proposed by Hansen (1999). Threshold effects are allowed to characterize the behavior of output supply and quasi-fixed and variable input demand.. The econometric results support the existence of three regimes characterized by different economic behavior. Our analysis suggests that in a dynamic setting with risk and non-risk neutral economic... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Investment; Decoupling; Threshold Behaviour; Farm Management; Risk and Uncertainty. |
| Ano: 2008 |
URL: http://purl.umn.edu/6511 |
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| Serra, Teresa; Zilberman, David; Gil, Jose Maria. |
| The growing importance of economic factors in farmers decision to go organic has raised interest in characterizing the economic behavior of organic versus conventional farms. Published analyses so far have not considered differential uncertainties and farmers risk preferences between conventional and organic practices when comparing these techniques. Our article attempts to assess this issue. We use a model of farmer decision under risk to analyze the differential values between Spanish COP organic and conventional farms and to assess the incentives for adoption of organic practices. Results show that organic and conventional farms do have different abilities to control production risk as well as different risk preferences. Organic price premiums and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries; Risk and Uncertainty. |
| Ano: 2007 |
URL: http://purl.umn.edu/9696 |
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| Lambarraa, Fatima; Serra, Teresa; Gil Roig, Jose Maria. |
| The concept of technical efficiency is critical to measuring the firm performance, determining the degree of innovative technology adoption and the overall production efficiency. Traditionally, technical efficiency has been measured as the ratio of observed output to maximum feasible output. Stochastic frontier models have been widely utilized to assess this issue. Our research evaluates technical efficiencies in the Spanish olive sector. Specifically, the main objective of this study is to estimate a stochastic frontier production model by using a farm- level panel of data. The non- negative technical efficiency effects are assumed to be a function of firm- specific variables. A sample of Spanish farms observed from 1999 to 2002 is obtained from the FADN... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries; Productivity Analysis. |
| Ano: 2006 |
URL: http://purl.umn.edu/10071 |
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| Serra, Teresa; Zilberman, David; Goodwin, Barry K.; Featherstone, Allen M.. |
| This paper studies the extent to which decoupled income support measures in agriculture can have production implications both at the extensive and intensive margins. We develop a theoretical framework that analyzes production responses of agricultural producers to apparently decoupled payments, by explicitly considering risk attitudes and uncertainty. We use farm-level data collected in Kansas to estimate the model. Technology and risk preference parameters are jointly estimated. Results show that though lump sum payments are not fully decoupled in the presence of risk and uncertainty, their effects on agricultural production are likely to be of a very small magnitude. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19194 |
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| Serra, Teresa; Goodwin, Barry K.; Featherstone, Allen M.. |
| The crop insurance purchase decision for a group of Kansas farmers is analyzed using data from 1990sa period that experienced many changes in the federal crop insurance program. Farm-level data are used. Results indicate a reduction in the elasticity of the demand for crop insurance with respect to premium rates by the end of the decade. This corresponded with a considerable increase in government subsidies by the end of the 1990s. This may also reflect the attractiveness of new revenue insurance products that may have made producers less sensitive to premium changes. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Risk and Uncertainty. |
| Ano: 2003 |
URL: http://purl.umn.edu/22019 |
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| Hassouneh, Islam; Radwan, Amr; Serra, Teresa; Gil, Jose Maria. |
| In recent years, health risks have received increasing attention among consumers and created interest in analysing the relationship between food scares, food consumption and market prices. One of the most relevant and recent food scares is the avian influenza that has had important effects not only on human and animal health, but also on the economy. We assess effects of avian influenza on price transmission along the Egyptian poultry marketing chain. Although Egypt has been one of the most affected countries by avian influenza, this article is the first attempt to understand this food scare’s impacts on Egyptian poultry markets. In doing so, a multivariate smooth transition vector error correction model (STVECM) is applied to monthly poultry price data.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food scare; Avian influenza; Price transmission; Egypt.; Production Economics; C22; Q13. |
| Ano: 2010 |
URL: http://purl.umn.edu/91830 |
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| Registros recuperados: 31 | |
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