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| Ewing, Patrick M; University of Minnesota, Department of Agronomy and Plant Genetics ; ewing069@umn.edu; Runck, Bryan C; University of Minnesota, Department of Geography, Environment and Society; runck014@umn.edu. |
| The importance of corn production to the midwestern United States cannot be overestimated. However, high production requires high nitrogen fertilization, which carries costs to environmental services such as water quality. Therefore, a trade-off exists between the production of corn yield and water quality. We used the Groundwater Vulnerability Assessment for Shallow depths and Crop Environment Resource Synthesis-Maize models to investigate the nature of this trade-off while testing the Simple Analytic Framework trade-offs featured in this Special Feature. First, we estimated the current levels of yield and water quality production in northeastern Iowa and southern Minnesota at the 1-square-kilometer, county, and regional scales. We then constructed an... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Agriculture; Agroecology; Corn belt; DSSAT; Fertilization rate; Frontier analysis; Groundwater nitrate; GWAVA-S; Land use; Nitrogen; Rotation; Row crops; Simple Analytics Framework; Yield. |
| Ano: 2015 |
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| Akinleye, S.O.. |
| The objective of this study was to estimate the efficiency of arable crop farming in Ijebu Division of Ogun State with Ijebu North East and Odogbolu Local Governments selected as the study area. To achieve this objective, primary data were collected with the use of well structured questionnaires from 120 respondents. Of these, 90 were usable for the analyses. Frontier production function was used in analysing the data. The results show that 56 male and 34 female respondents were interviewed, out of which 73 per cent had formal education and 53 per cent had less than 10 years of farming experience. The computed technical efficiency index shows that maize had the highest number of variables with high technical efficiency index. Based on the fact that the... |
| Tipo: Report |
Palavras-chave: Technical efficiency; Frontier analysis; Maize; Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/54403 |
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| Piot-Lepetit, Isabelle; Brümmer, Bernhard; Kleinhanss, Werner. |
| This paper develops a methodology for asymmetric treatment of desirable and undesirable outputs. First, a hyperbolic output efficiency measurement is used to describe a middle term transformation of production processes where producers try to improve their competitiveness together with a reduction of the negative impact on the environment. Second, a radial efficiency measurement, called directional output distance function, is used to depict a long-term transformation of the production process. A non-parametric Data Envelopment Analysis (DEA) and a Stochastic Frontier Analysis (SFA) are used to evaluate the impact of agricultural policy changes, both in France and Germany, on the technical and environmental efficiency of arable farms, taking into account... |
| Tipo: Journal Article |
Palavras-chave: Frontier analysis; Technical and environmental efficiency; Environmental regulations; Agricultural and Food Policy; Environmental Economics and Policy; Productivity Analysis. |
| Ano: 2001 |
URL: http://purl.umn.edu/98867 |
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