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| Registros recuperados: 44 | |
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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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| Lohr, Luanne; Park, Timothy A.. |
| A stochastic frontier model is used to explain the performance evaluation of U.S. university extension providers by organic producers. The model makes explicit the nonmanagerial factors that influence both performance ratings and performance efficiency, defined as achieving a rating as close to the "best" rating as possible. Results indicate that extension agents are performing at relatively high mean efficiency of 0.92, but that the average rating is relatively low at 2.66 on a four-point scale. Several sources of potential bias in ratings are identified as a way for managers to more accurately conduct individual performance assessments. Programmatic changes to emphasize more collaborative research and training are suggested by the positive effects on... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2004 |
URL: http://purl.umn.edu/16721 |
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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; Krissoff, Barry. |
| Even if governments agree on equivalency of organic standards across countries, consumers may still believe domestically produced organic foods are superior to imports. We simulated a partial equilibrium model of trade in organic wheat between the United States and Germany to illustrate the welfare gains and losses associated with international harmonization of organic standards. Six cases were examined - no equivalency in standards (the status quo), equivalency of standards with complete and incomplete import acceptance, exporters certifying in importing country with complete and incomplete import acceptance, and exporters paying educational costs, with incomplete import acceptance. Results demonstrate that importing country consumers are better off if... |
| Tipo: Working or Discussion Paper |
Palavras-chave: International Relations/Trade. |
| Ano: 2001 |
URL: http://purl.umn.edu/16726 |
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| Lohr, Luanne; Salomonsson, Lennart. |
| Environmental and social justifications for organic conversion subsidies are as pervasive in the United States as in Europe, but national policy does not explicitly support organic agriculture. Using Sweden's experience, we analyze factors that affect whether a subsidy is required to motivate organic conversion. We use a utility difference model to compare farmers who converted before and after the subsidy. Significant factors in conversion without subsidies are greater livestock diversity and more sales outlets. Farmers requiring subsidies manage larger farms, are more concerned with organic inspection quality and adequacy of technical advice, and reside in areas with more organic farms. Results suggest that a subsidy induces mainly those already... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Organic agriculture; Utility difference model; Public policy; Agricultural and Food Policy; Production Economics. |
| Ano: 1998 |
URL: http://purl.umn.edu/16640 |
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| Lohr, Luanne; Park, Timothy A.. |
| We study the demand by organic farmers for technical advice using a quantile regression for the demand of organic farmers for consultations with private information providers. There is substantial heterogeneity in the impact of critical explanatory variables on consultations of organic farmer. Larger farm size has a positive effect on contacts, but the effect is absent for the highest number of consultations. Internet use has a positive marginal effect on visits to private information providers across each quantile, suggesting that expanded efforts to deliver programs through web-based resources are a useful investment for information providers. |
| Tipo: Article |
Palavras-chave: Organic farming; Technical assistance; Quantile regression model; Count data; Internet access; Marketing; C25; Q12; Q13; Q16. |
| Ano: 2012 |
URL: http://purl.umn.edu/123784 |
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| Lohr, Luanne; Hanson, Steven D.. |
| Number of suppliers, approximation of equal-shares market condition and market share held by in-state sources were calculated to determine diversity of sources for 10 fresh fruits and vegetables in eight U.S. wholesale markets. Specificity of growing conditions is associated with few supply sources, unequal market shares and limited purchases from in-state suppliers. For crops with few sources, lower perishability and greater transportability are correlated with greater balance in market shares. For crops with many supply sources, greater perishability and greater transportability are consistent with large market share from imports. Diversity across all commodities can increase market share for local producers. |
| Tipo: Journal Article |
Palavras-chave: Concentration index; Fruits and vegetables; Source diversity; Marketing. |
| Ano: 1995 |
URL: http://purl.umn.edu/15274 |
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| Paudel, Krishna P.; Lohr, Luanne. |
| Residue management system (RMS), comprised of no till cultivation, a winter cover crop, and poultry litter, could be an alternative to existing management system in cotton production in the Georgian Piedmont. We compare the productivity and profitability of RMS with the current system over time, focusing on the role of organic matter. Using dynamic bioeconomic modelling technique, we show that the net return and land value difference between these two systems increase as the terminal period increases. We conclude that if financial and capital markets based on organic matter work efficiently, farmers will choose RMS in cotton production. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Residue management; Organic matter; Productivity; Crop Production/Industries. |
| Ano: 1998 |
URL: http://purl.umn.edu/16677 |
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| Gubanova, Tatiana; Lohr, Luanne; Park, Timothy A.. |
| Organic farmers, wholesalers, and retailers need price forecasts to improve their decision-making practices. This paper presents a methodology and protocol to select the best performing method from several time and frequency domain candidates. Weekly farmgate prices for organic fresh produce are used. Forecasting methods are evaluated on the basis of an aggregate accuracy measure and several out-of-sample predictive ability tests. A seasonal autoregressive method is recommended for all planning horizons. The role of better price forecasts for the agents who deal in less common organic produce is highlighted. A confirmation for the claim that the organic produce industry needs better farmgate price forecasts to grow is provided. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Demand and Price Analysis. |
| Ano: 2005 |
URL: http://purl.umn.edu/19045 |
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| Registros recuperados: 44 | |
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