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Estimating Farm Level Multivariate Yield Distribution Using Nonparametric Methods AgEcon
Zheng, Qiujie; Wang, H. Holly; Shi, Qinghua.
Modeling crop yield distributions has been an important topic in agricultural production and risk analysis, and nonparametric methods have gained attention for their flexibility in describing the shapes of yield density functions. In this article, we apply a nonparametric method to model joint yield distributions based on farm-level data for multiple crops, and also provide a way of simulation for univariate and bivariate distributions. The results show that the nonparametric models, both univariate and bivariate, are estimated quite well compared to the original samples, and the simulated empirical distributions also preserve the attributes of the original samples at a reasonable level. This article provides a feasible way of using multivariate...
Tipo: Conference Paper or Presentation Palavras-chave: Yield distribution; Multi-variate nonparametric; China; Farm-level; Risks; Farm Management; Risk and Uncertainty.
Ano: 2008 URL: http://purl.umn.edu/6509
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Agricultural land tax and farm-level resource use and output supply response AgEcon
Olubode-Awosola, Femi.
This study develops and uses a programming model for farm-level resource use and output supply response to estimate the effects of agricultural land tax in South Africa: A case study of Free State, a region of extremely large commercial farms that gained their size and economic heft during the apartheid years of aggressive subsidies, favorable tax treatment, lucrative state grants and gifts, and all manner of financial assistance. The results indicate that changes in land use and output supply are marginal. The highest effects are observed on irrigated farming. Relevant policy responses raised by the findings are discussed.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural land tax; Farm-level; Resource use; Output supply; Land reform; South Africa; Case study; Programming model; Agricultural and Food Policy; Farm Management; Food Security and Poverty; Land Economics/Use; Political Economy; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2009 URL: http://purl.umn.edu/51664
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