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| Ceddia, M. Graziano; Bartlett, Mark; Perrings, Charles. |
| Pollen-mediated gene flow is one of the main concerns associated with the introduction of genetically modified (GM) crops, since growers of GM varieties normally do not take into account its possible impact on conventional and organic growers therefore generating negative externalities. Should a premium for non-GM varieties emerge on the market, 'contamination' with GM pollen would generate a revenue loss for growers of non-GM varieties. The existence of such externalities has led the European Union (EU) to put forward the concept of coexistence in order to guarantee farmers' freedom to plant both conventional and GM varieties without generating economic losses to conventional farmers. The first part of this paper develops a simple economic model analysing... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Coexistence; Pollen-mediated gene flow; Monte Carlo simulation; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/44193 |
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| Nkegbe, Paul K.; Shankar, Bhavani; Ceddia, M. Graziano. |
| Both governmental and non-governmental organizations are engaged in the promotion of soil and water conservation practices in northern Ghana, but adoption is believed to be low. This study thus examines the determinants of conservation practices by farming households in the area. Data for the study was collected from 445 households located in 15 communities in northern Ghana. Univariate, bivariate and multivariate probit models were used to analyse the decision to adopt six conservation practices in the area. Results show the major determinants of adoption are plot and cropping characteristics such as location; and socio-economic and institutional variables such as number of contacts with extension officers, membership in farmer association and distance to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Conservation practice; Multivariate; Selectivity bias; Ghana; Resource /Energy Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/114608 |
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