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Registros recuperados: 30
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A parametric approach for evaluating the technical efficiency of the brazilian agricultural sector. Repositório Alice
SOUZA, G. da S. e; GOMES, E. G.; GAZZOLA, R.; WANDER, A. E.; SOUZA, R. da S..
In this study we assessed the technical efficiency of the 27 Brazilian states in the years 1995/96 and 2006. The ata on land and labor were otained from the agricultural census of the two considered periods. Data on credit for investment and running costs were obtained from the Brazilian Central Bank reports. In the analysis we used a DEA CCR model and a stochastic frontier with technical effects. The second model better fit the data, with 99% of correlation between predicted and observed values. The results show that Distrito Federal had the highest technical efficiency in agriculture in 2006 and the second highest in 1995/96. The lowest technical efficiency was found int Piauí in 2006 and in Tocantins in 1995/96. The estimated elasticities show that...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Technical efficiency; Stochastic frontier; Elasticity; Agriculture.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/661472
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A Stochastic Production Investigation of Fish Farms in Ghana AgEcon
Onumah, Edward E.; Acquah, H. de-Graft.
This paper considers the stochastic production frontier approach to analyse the technical efficiency and its determinants of fish farms in Ghana using a cross-section data of 150 farms. It considers the explicit effects of family and hired labour on production by setting the log-value of the zero-observation of these two sources of labour to zero with dummy variables. Results demonstrate that expected elasticities of mean output with respect to all input variables are positive and significant. Findings also show that family and hired labour used for fish farming in Ghana may be equally productive. Fish farms in Ghana are revealed to be characterised by technology with increasing return to scale. The combined effects of operational and farm specific factors...
Tipo: Journal Article Palavras-chave: Technical efficiency; Stochastic frontier; Elasticity; Return to scale; Farm Management; Productivity Analysis; GA; IN.
Ano: 2011 URL: http://purl.umn.edu/109738
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Assessing the Technical and Allocative Efficiency of Marketing Decisions by U.S. Organic Producers AgEcon
Lohr, Luanne; Park, Timothy A..
We develop measures of technical and allocative efficiency of producers in marketing certified organic products. A stochastic output distance frontier and the associated revenue share equations are estimated using comprehensive U.S. data on certified organic producers. Farm-level measures of technical efficiency are calculated and factors which enhance performance are identified. Factors that systematically influence allocative efficiency are assessed. The revenue mix of organic producers is systematically inefficient as both male and female producers rely too heavily on revenue from organic markets relative to conventional outlets.
Tipo: Conference Paper or Presentation Palavras-chave: Organic farming; Stochastic frontier; Technical efficiency; Allocative efficiency; Farm Management; Marketing; D21; C31; Q01.
Ano: 2011 URL: http://purl.umn.edu/103365
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Assessing the Technical and Allocative Efficiency of U.S. Organic Producers AgEcon
Park, Timothy A.; Lohr, Luanne.
We develop measures of technical and allocative efficiency of producers in marketing certified organic products. A stochastic output distance frontier and the associated revenue share equations are estimated using comprehensive U.S. data on certified organic producers. Farm-level measures of technical efficiency are calculated and factors that enhance performance are identified. Factors that systematically influence allocative efficiency are assessed. The revenue mix of organic producers is systematically inefficient as both male and female producers rely too heavily on revenue from organic markets relative to conventional outlets.
Tipo: Journal Article Palavras-chave: Organic farming; Stochastic frontier; Technical and allocative efficiency; Agribusiness; Farm Management; Marketing; Production Economics; Productivity Analysis; Public Economics; D21; C31; Q01.
Ano: 2010 URL: http://purl.umn.edu/90678
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Brazilian Agricultural Productivity and Policy AgEcon
Rada, Nicholas E.; Buccola, Steven T..
Replaced with revised version of poster 07/29/11.
Tipo: Conference Paper or Presentation Palavras-chave: Brazilian agriculture; Embrapa; Input distance function; Stochastic frontier; Total factor productivity; Technical change; Efficiency; International Development; Productivity Analysis; O2; O3.
Ano: 2011 URL: http://purl.umn.edu/103326
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Brazil's Rising Agricultural Productivity and World Competitiveness AgEcon
Rada, Nicholas E.; Buccola, Steven T.; Fuglie, Keith O..
Brazil now is the largest coffee, sugar, and fruit juice producer, second-largest soybean and beef producer, and third-largest corn and broiler producer. It has overtaken the U.S. in poultry exports, nearly matches the U.S. in soybean exports, and dominates global trade in frozen orange juice. To test and better understand these advances, we draw on decennial farm censuses to examine technical change and efficiency in Brazilian agriculture. Our approach is to estimate a stochastic, multi-product, output distance frontier, using a translog functional form and data disaggregated to the micro-region (sub-state) level. Using two consecutive decennial farm censuses, we combine state-level Fisher productivity-change indexes with state-level translog distance...
Tipo: Conference Paper or Presentation Palavras-chave: Brazil; Shephard distance function; Stochastic frontier; Technical change; Technical efficiency; International Development; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2009 URL: http://purl.umn.edu/49317
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Decomposition of Total Factor Productivity Change in the U.S. Hog Industry AgEcon
Key, Nigel D.; McBride, William D.; Mosheim, Roberto.
The U.S. hog industry has experienced dramatic structural changes and rapid increases in farm productivity. A stochastic frontier analysis is used to measure hog enterprise total factor productivity (TFP) growth between 1992 and 2004 and to decompose this growth into technical change and changes in technical efficiency, scale efficiency, and allocative efficiency. Productivity gains over the 12-year period are found to be explained almost entirely by technical progress and by improvements in scale efficiency. Differences in TFP growth rates in the Southeast and Heartland regions were found to be explained primarily by differences in farm size growth rates.
Tipo: Journal Article Palavras-chave: Hog production; Scale efficiency; Stochastic frontier; Technical change; Total factor productivity growth; Livestock Production/Industries; Production Economics; D24; Q12.
Ano: 2008 URL: http://purl.umn.edu/45512
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Detecting Technological Heterogeneity in New York Dairy Farms AgEcon
del Corral, Julio; Alvarez, Antonio; Tauer, Loren W..
Agricultural studies have often differentiated and estimated different technologies within a sample of farms. The common approach is to use observable farm characteristics to split the sample into several groups and subsequently estimate different functions for each group. Alternatively, unique technologies can be determined by econometric procedures such as latent class models. This paper compares the results of a latent class model with the use of a priori information to split the sample using dairy farm data in the application. Latent class separation appears to be a superior method of separating heterogeneous technologies.
Tipo: Conference Paper or Presentation Palavras-chave: Parlor milking system; Stanchion milking system; Latent class model; Stochastic frontier; Production Economics.
Ano: 2009 URL: http://purl.umn.edu/49293
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Detecting Technological Heterogeneity in New York Dairy Farms AgEcon
del Corral, Julio; Alvarez, Antonio; Tauer, Loren W..
Agricultural studies have often differentiated and estimated different technologies within a sample of farms. The common approach is to use observable farm characteristics to split the sample into several groups and subsequently estimate different functions for each group. Alternatively, unique technologies can be determined by econometric procedures such as latent class models. This paper compares the results of a latent class model with the use of a priori information to split the sample using dairy farm data in the application. Latent class separation appears to be a superior method of separating heterogeneous technologies.
Tipo: Working or Discussion Paper Palavras-chave: Parlor milking system; Stanchion milking system; Latent class model; Stochastic frontier; Agribusiness; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/51143
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Determinants of Credit Constraint Conditions and Production Efficiency Among Farming Households in Southwestern Nigeria AgEcon
Omonona, Bolarin T.; Lawal, Justina Oluwayemisi; Oyinlana, A.O..
Sustaining and improving production efficiency of resource poor smallholder farmers under the existing credit constraint conditions require the improvement of access to credit facilities and other factors involved. The study examined the factors influencing credit constraint (CC) and production efficiency of farming households in Oyo State, Nigeria. Primary data was randomly collected using structured questionnaire from 120 mixed farmers in the study area. Data was analyzed using descriptive analysis, probit regression and stochastic frontier analysis. The results shows that 79.2 percent of the respondents were credit constrained and this has negative influence on their production efficiency as credit constrained farming households (CCFH) were found to be...
Tipo: Journal Article Palavras-chave: Credit constraint; Production efficiency; Farming households; Stochastic frontier; Nigeria; Agricultural Finance.
Ano: 2010 URL: http://purl.umn.edu/95775
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Determinants of Profit Efficiency Among Small Scale Rice Farmers in Nigeria: A Profit Function Approach AgEcon
Kolawole, Ogundari.
This study employs a stochastic frontier approach to examine profit efficiency of small scale rice farmers in Nigeria using farm-level survey data collected from 200 farmers in the study area. Data were analysed using descriptive statistics and standard profit function. The result shows that about 60 percent of potential profit is gain due to production efficiency while the remaining can be attributed to both technical and allocative inefficiencies in the study area. Also, the result further revealed that age, educational level, farming experience and household size positively affected profit efficiency. These variables are thus important in policy formulation by government.
Tipo: Conference Paper or Presentation Palavras-chave: Stochastic frontier; Profit efficiency; Small-scale; Farmers; Nigeria; Crop Production/Industries; Productivity Analysis; C8; C21; Q12.
Ano: 2006 URL: http://purl.umn.edu/25238
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DETERMINANTS OF TECHNICAL EFFICIENCY IN AGRICULTURE AND CATTLE RANCHING: A SPATIAL ANALYSIS FOR THE BRAZILIAN AMAZON AgEcon
Igliori, Danilo Camargo.
The determinants of technical efficiency in agriculture and cattle ranching are closely related with the debate involving the conservation-development trade-off in the Brazilian Amazon. Concerned with balancing development and environmental conservation, policy makers and academics have emphasized the importance of choosing ways of selecting areas where land use restrictions would be established. In order to understand the relationship between spatial patterns of deforestation and the associated distribution and characteristics of economic activity, issues regarding technical efficiency are clearly important. This paper aims to identify the socio-economic and environmental determinants of technical efficiency in agriculture and cattle ranching in the...
Tipo: Working or Discussion Paper Palavras-chave: Stochastic frontier; Technical efficiency; Spatial analysis; Brazilian Amazon; Livestock Production/Industries; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2005 URL: http://purl.umn.edu/31927
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Economic performance of exotic dairy cattle under smallholder conditions in the marginal zones of Kenya using three analytical approaches AgEcon
Kavoi, Mutuku Muendo; Hoag, Dana L.; Pritchett, James G..
Smallholder exotic dairy cattle have been adopted in the dry marginal zones of Kenya from the high potential areas over the last two decades contrary to the opinion of experts. The objective of this study therefore was to evaluate the economic performance of this dairy establishment in the marginal zones. Three approaches were used for the evaluation: the stochastic cost frontier to determine inefficiencies and the causative institutional and socio-economic factors; cost-factor demand systems; and the supply response analyses to determine the elasticity estimates of policy variables. The results from these approaches are supplementary and seem to support the need for government interventions in institutional and socio-economic factors that have a high...
Tipo: Journal Article Palavras-chave: Marginal zones; Stochastic frontier; Systems analysis; Institutional and socio-economic factors; Institutional and Behavioral Economics.
Ano: 2010 URL: http://purl.umn.edu/61997
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Efficiency and technical change in the Western Australian wheatbelt AgEcon
Cattle, Nathan; White, Benedict.
The production performance of wheatbelt farms in Western Australia is analysed to determine whether potential to exploit scale economies and improve technical efficiency has driven the trend towards increased farm size. An input-orientated stochastic frontier model is used to estimate technical efficiency and scale economies using an unbalanced panel dataset provided by BankWest for the period 1995/1996 to 2005/2006. Differences in the relative efficiency of farms are explored by the simultaneous estimation of a model of inefficiency effects. The results show the majority of wheatbelt farms operate at high levels of technical efficiency and experience increasing returns to scale. Over the study period farms became bigger to benefit from economies of scale,...
Tipo: Conference Paper or Presentation Palavras-chave: Stochastic frontier; Agriculture; Farm size; Scale economies; Technical efficiency; Productivity Analysis.
Ano: 2007 URL: http://purl.umn.edu/10392
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Eficiência técnica na produção de manga em Petrolina (PE). Repositório Alice
FERREIRA, C. B.; ARAÚJO, J. A.; LIMA, J. R. F. de.
Neste estudo será abordada a produção total dos fatores (PTF) na produção de manga no semiárido brasileiro, em específico no Vale do Submédio São Francisco. A maior demanda por produtos agroalimentares de qualidade vem ocasionando mudanças significativas no comportamento da oferta de frutas no mundo inteiro. Neste contexto se encaixa o Vale; entre os produtos cultivados nessa região, a manga se destaca como um dos mais importantes. Em virtude da necessidade de identificar os componente s de eficiência técnica (ET) na produção de manga no Vale do Submédio São Francisco, o artigo tem como objetivo analisar o nível de eficiência técnica dos produtores de manga do Distrito de Irrigação Senador Nilo Coelho em Petrolina (PE). O estudo das variáveis deu-se também...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Produção; Mangifera indica; Economia; Manga; Mango; Total factor productivity; Stochastic frontier.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1004755
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Excess Capital in Agricultural Production AgEcon
Kumbhakar, Subal C.; Guan, Zhengfei; Oude Lansink, Alfons G.J.M..
In this article we propose a theoretical model for analyzing capital requirement in agricultural production and define excess capital thereupon. We develop a two-step method that allows endogenous regressors in the maximum likelihood estimation. The two-step procedure is also capably of recovering the parameters of time invariant variables in fixed effect models. The model and method are applied to a capital requirement study using data from cash crop farms in the Netherlands. Empirical results show that excess capital widely exists on the farm. The implications of excess capital are further demonstrated with a production frontier analysis.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural production; Capital requirement; Endogeneity; Excess capital; Fixed effect; Maximum likelihood estimation; Stochastic frontier; Production Economics.
Ano: 2007 URL: http://purl.umn.edu/9813
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Farmers’ health and agricultural productivity in rural Ethiopia AgEcon
Ulimwengu, John M..
This paper estimates a stochastic production using household survey data to analyze the relationship between farmers’ health impediments and agricultural production efficiency in Ethiopia. The results show that healthy farmers produce more per unit of inputs, earn more income and supply more labor than farmers affected by sickness. The model results show that production inefficiency increases significantly with the number of days lost to sickness. This finding suggests that investing in the health sector in rural areas will not only improve farmers’ agricultural performance but also increase their income. Policymakers should therefore devise strategies that will maximize the contribution of health investments to agricultural productivity and the overall...
Tipo: Journal Article Palavras-chave: Health; Productivity; Stochastic frontier; Efficiency; Ethiopia; Health Economics and Policy; Productivity Analysis.
Ano: 2009 URL: http://purl.umn.edu/56902
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Investigation of Factors Influencing the Technical Efficiency of Agricultural Producers Participating in Farm Credit Programs: The Case of Greece AgEcon
Rezitis, Anthony N.; Tsiboukas, Kostas; Tsoukalas, Stauros.
This study investigates a number of factors influencing technical efficiency of Greek farms participating in the 1994 European Union (EU) farm credit program. Technical efficiency measures are obtained within the framework of a parametric stochastic frontier. Factors showing a positive effect on technical efficiency are value of liabilities, number of hours of mechanical operation, large land size, and rental land, whereas those showing a negative effect are value of EU product subsidies, value of off-farm family income, and hired labor. The value of investments incurred by farms because of their participation in the 1994 farm credit program does not show any significant effect on technical efficiency. The predicted levels of technical efficiency...
Tipo: Journal Article Palavras-chave: Farm credit program; Stochastic frontier; Technical efficiency; Q10; Q12; Q16; Q19.
Ano: 2003 URL: http://purl.umn.edu/43157
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Measurement of the technical efficiency of small pineapple farmers in Santander, Colombia: a stochastic frontier approach Rev. Econ. Sociol. Rural
Trujillo,Juan C.; Iglesias,Wilman J..
The objective of this study is to estimate the levels of technical efficiency of the small pineapple farmers of Santander, Colombia, using the stochastic frontier approach. In addition, this study attempts to determine whether the acreage and some of the socio-economic characteristics of farmers can influence the efficiency of their pineapple farms. By exploiting the information that was gathered in a survey of 194 pineapple farmers in the region, these farmers' technical efficiency was estimated using a Cobb-Douglas-type stochastic frontier model and a technical inefficiency model. The results suggest that acreage and the variables that are associated with the human capital, e.g., the level of schooling and the years of experience in agricultural...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Technical efficiency; Stochastic frontier; Cobb-Douglas production function; Pineapple.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032013000600003
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Migration and Farm Efficiency: Evidence from Northern Thailand AgEcon
Nonthakot, Phanin; Villano, Renato A..
This paper investigates the relationship between labour migration and agricultural productivity in the Northern Province of Thailand. Drawing on maize production data from a household survey, we estimate a stochastic production function to evaluate the effects of migration, remittances and salient characteristics of migrants on the mean maize output and levels of technical efficiency. Evidence shows that remittances and number of migrant workers facilitate maize production. It was also found that remittances, duration of migration, gender and education of migrants enhance the productive capacity of maize farmers.
Tipo: Conference Paper or Presentation Palavras-chave: Migration; Stochastic frontier; Technical efficiency; Maize; Thailand; Crop Production/Industries; Labor and Human Capital.
Ano: 2008 URL: http://purl.umn.edu/5981
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