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Registros recuperados: 58 | |
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Lohr, Luanne; Park, Timothy A.. |
Responses from a national survey of U.S. organic farmers indicated dissatisfaction with the extension service. An ordered probit model was used to identify the factors influencing effectiveness ratings of extension advisors by farmers. Study findings show that part-time, higher income organic farmers who used a variety of highly rated private-sector information sources rated extension providers as more effective. Farmers in the Northeast and West regions rated extension usefulness more highly than in other regions. Not accounting for these demographic components in effectiveness ratings may result in under- or overestimation of results of organic-targeted extension programs. Extension agents can improve their usefulness to organic farmers by complementing... |
Tipo: Journal Article |
Palavras-chave: Extension service; Ordered probit model; Organic farming; Teaching/Communication/Extension/Profession. |
Ano: 2003 |
URL: http://purl.umn.edu/31055 |
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Park, Timothy A.; Lohr, Luanne. |
Organic farmers make system-level crop protection decisions that combine complementary insect, disease, nematode, and weed management strategies. Data from a national survey of U.S. organic farmers were used in a multivariate count data model to identify the farm and regional factors influencing the intensity of adoption across the linked pest management categories. The results showed that weed management is of greatest concern to organic farmers. More intensive information-seeking and on-farm experimentation, higher educational attainment, and intensity of commitment to organic farming were positively related to the number of weed control strategies adopted. Predictions of adoption intensity based on this model and customized to farm and region... |
Tipo: Working or Discussion Paper |
Palavras-chave: Farm Management. |
Ano: 2002 |
URL: http://purl.umn.edu/16655 |
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Lohr, Luanne; Park, Timothy A.. |
The impact of supply relationships and certification programs on the organic lettuce market is examined using an integrated partial adjustment and asymmetric supply response model. Costs associated with organic certification, production, and marketing have not restricted producers' abilities to respond to price signals. Organic growers allocate output between certified and noncertified markets in response to changing price premiums. Estimates of short-run supply elasticities indicate that organic lettuce growers are more responsive to price changes than producers of nonorganic lettuce. Long-run elasticity has increased since 1988, a change that coincides with the market entry of larger producers. |
Tipo: Journal Article |
Palavras-chave: Crop Production/Industries; Industrial Organization. |
Ano: 1992 |
URL: http://purl.umn.edu/30948 |
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Lohr, Luanne; Park, Timothy A.. |
A stochastic distance function frontier was estimated using data from a national survey of organic farmers to evaluate the effect of farm-specific attributes on efficiency. Farm-specific and regional variables that shift efficiency were incorporated into the multioutput distance function, including organic farming experience, use of soil-improving inputs, and farmer involvement in research. Participation in research projects reduces the level of on-farm technical inefficiency with mean technical efficiency of participating farmers 25 percent higher than nonparticipating farmers. The results suggest that differences in productivity across organic farmers are closely linked to input use and observable management decisions. |
Tipo: Conference Paper or Presentation |
Palavras-chave: Productivity Analysis. |
Ano: 2004 |
URL: http://purl.umn.edu/36244 |
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Park, Timothy A.; Florkowski, Wojciech J.. |
Timely adoption of new varieties is critical to profitable peach production, and peach quality is a primary factor driving adoption. An adoption model for peach varieties is estimated, incorporating grower evaluations of peach quality. The model identifies the impact of farm characteristics such as the farmer's quality preferences, on-farm agronomic and orchard conditions, as well as geographic effects in Georgia peach-growing regions. The relative impact of the key external and internal peach quality attributes on adoption is assessed. Decisions on new varieties are influenced by the age distribution of the orchard, information which can be used in targeting new varieties to growers. |
Tipo: Journal Article |
Palavras-chave: Count data; Peach variety adoption; Robust standard errors; Crop Production/Industries. |
Ano: 2003 |
URL: http://purl.umn.edu/30724 |
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Registros recuperados: 58 | |
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