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A Bayesian Total Factor Productivity Analysis of Tropical Agricultural Systems in Central-Western Africa And South-East Asia AgEcon
Tonini, Axel; Matus, Silvia Saravia; Gomez y Paloma, Sergio.
This paper computes and analyses total factor productivity (TFP) growth rates for tropical agricultural systems in Central-Western Africa and South-East Asia. Two regions that despite sharing common agro-ecological conditions, have pursued different adoption rates of green revolution technology and have reported dissimilar yields per hectare. A panel data set is constructed for the period 1987-2007 from the FAOSTAT database. A Bayesian stochastic frontier model with country specific temporal variation in technical efficiency is estimated. Technical efficiency estimates reveal that there is substantial room for improvement in both continental sub-sets and that TFP estimates show on average larger rates of growth for South-East Asian countries as compared to...
Tipo: Conference Paper or Presentation Palavras-chave: Bayesian Inference; Stochastic Production Frontier; Time Varying Technical Inefficiency; Total Factor Productivity Growth; Tropical Agricultural Systems; Farm Management; Productivity Analysis; C15; D24; O47.
Ano: 2011 URL: http://purl.umn.edu/116088
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A META-ANALYSIS OF TECHNICAL EFFICIENCY IN NIGERIAN AGRICULTURE AgEcon
Ogundari, Kolawole.
This study sheds light on how study specific-characteristics impact mean technical efficiency (MTE) in Nigerian agriculture. Also the paper extracts consensus message about MTE and its drivers in Nigerian agriculture based on studies covering the period 1999-2008. A meta-analysis using truncated regression was employed on a total of sixty four studies which yield eighty six observations for the econometric analysis. The regression results show that MTE in Nigerian agriculture increased significantly over the years. Study specific-characteristics such as sample size, number of inputs used as well as studies with focus on crop and livestock production were found to significantly impact MTE. Further analyses show that studies in the Northcentral, Southwest,...
Tipo: Conference Paper or Presentation Palavras-chave: Meta-regression; Technical Efficiency; Truncated Regression; Agriculture; Nigeria; Agricultural and Food Policy; Production Economics; Productivity Analysis; D24; Q12.
Ano: 2009 URL: http://purl.umn.edu/50327
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A metafrontier approach to measuring technical efficiencies across the UK dairy sector AgEcon
Barnes, Andrew Peter; Revoredo-Giha, Cesar; Sauer, Johannes.
A regional approach is applied to measure technical efficiencies on dairy farms which employs the deterministic metafrontier approach. We construct six super regions for the UK, i.e. Eastern, Western, Northern England, Wales, Scotland and Northern Ireland. Data are collected through three different administrative systems, all be it under the same FADN guidance. We find for dairy farming comparative indicators of performance in all three data sets. The stochastic frontier approach is applied to construct 6 regional frontiers and a pooled (UK) dataset for comparison. A likelihood ratio test rejects the null hypothesis that these regions operate under a common frontier which may indicate bias in previous attempts to measure dairying efficiency at the country...
Tipo: Conference Paper or Presentation Palavras-chave: Stochastic Production Frontiers; Metafrontiers; UK Farm Account Data; Dairy farming.; Agricultural and Food Policy; Q12; D24; C23; C51.
Ano: 2011 URL: http://purl.umn.edu/99369
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A Multi-Period Analysis of Two Common Livestock Management Strategies Given Fluctuating Precipitation and Variable Prices AgEcon
Ritten, John P.; Frasier, W. Marshall; Bastian, Christopher T.; Paisley, Steven I.; Smith, Michael A.; Mooney, Sian.
Many areas of the US recently endured a severe drought and management strategies to cope with the lack of forage production varied. A multi-period mathematical model is presented that estimates the outcomes of two common producer responses to changes in precipitation, partial liquidation and purchasing hay, given fluctuating cattle prices over a long term planning horizon. Results were further summarized with regression analysis and selected elasticities were calculated to reflect the sensitivity of outcomes to variability in precipitation and livestock prices. Although little impact was seen from utilizing additional hay as a strategy during drought, producers who follow this strategy are in a position to market more animals immediately post drought in...
Tipo: Journal Article Palavras-chave: Drought management; Mathematical programming; Herd liquidation; Price cycle; Cattle management; Agribusiness; Agricultural Finance; Farm Management; Livestock Production/Industries; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods; Q12; C61; D24.
Ano: 2010 URL: http://purl.umn.edu/90673
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A Reappraisal of the Role of Agriculture in Economic Growth in Melanesian Countries AgEcon
Fleming, Euan M.; Fleming, Pauline.
Fortunes in the agricultural sectors of four of the largest South Pacific countries are traced in recent decades by estimating the single factoral terms of trade index. The single factoral terms of trade are measured for agriculture in four Melanesian countries-Fiji, Papua New Guinea, Solomon Islands and Vanuatu-over the period, 1970 to 2002. This index provides a useful method to assess changes in returns to factors employed in agricultural production in these countries. Except in Solomon Islands, farmers experienced a deteriorating index, indicating that they have reaped progressively lower returns to their resources. In Solomon Islands, returns to resources are shown to have increased slightly. A sustained contribution by the agricultural sector to...
Tipo: Conference Paper or Presentation Palavras-chave: Factoral terms of trade; Melanesia; Smallholders; Total factor productivity; International Development; D24; O12; O47; Q17.
Ano: 2006 URL: http://purl.umn.edu/25715
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A two-stage productivity analysis using bootstrapped Malmquist index and quantile regression AgEcon
Kaditi, Eleni A.; Nitsi, Elisavet I..
This paper examines the effects of farm characteristics and government policies in enhancing productivity growth for a sample of Greek farms, using a two-stage procedure. In the 1st-stage, non-parametric estimates of Malmquist index and its decompositions are computed, while a bootstrapping procedure is applied to provide their statistical precision. In the 2nd-stage, the productivity growth estimates are regressed on various covariates using a bootstrapped quantile regression approach. The effect that the covariates exert on productivity growth of the average producer is analyzed, as well as the marginal effect of a given covariate for individuals at different points in the conditional productivity distribution. The results indicate that there exists...
Tipo: Conference Paper or Presentation Palavras-chave: Malmquist productivity index; Quantile regression; Bootstrap; Research Methods/ Statistical Methods; C14; C21; D24.
Ano: 2009 URL: http://purl.umn.edu/52845
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Accounting for agronomic rotations in crop production: A theoretical investigation and an empirical modeling framework AgEcon
Carpentier, Alain; Gohin, Alexandre; Letort, Elodie.
As far as crop acreage choices are concerned, a consensus seems to exist among agricultural scientists and extension agents: crop rotation effects and the related constraints are major determinants of farmers’ crop choices. Crop rotation effects are inherently dynamic. They are generally ignored in multicrop models with land as an allocable input found in the literature since most of these models are developed within a static framework. The aim of this paper is twofold (i) to propose a new approach and tools for investigating dynamic crop acreage choices accounting for crop rotation benefits and constraints and (ii) to illustrate the impacts of crop rotation effects and constraints on farmers’ acreage choices through simulation examples. The models...
Tipo: Conference Paper or Presentation Palavras-chave: Crop rotation; Dynamic programming; Acreage choice; Crop Production/Industries; Land Economics/Use; Q12; D21; D24; D92.
Ano: 2011 URL: http://purl.umn.edu/103431
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Agricultural Prices, Selection, and the Evolution of Food Industry AgEcon
Gaigne, Carl; Le Mener, Leo.
In this paper, we set up a simple model that explains the relation between low input price, high exit rates and industrial oncentration. More precisely, we argue that falling input prices force firms with low productivity to exit and induce expansion of more efficient incumbents at the expense of less productive producers. Our model helps reconcile some well‐established empirical results regarding the food processing industry. Indeed, agricultural prices have been declining between the early 1900s until 2006 while, over the same period, concentration and firm productivity have been increasing in the agri‐food industry.
Tipo: Working Paper Palavras-chave: Input price; Downstream industry; Entry/exit; Industrial concentration; Firm heterogeneity; Agricultural and Food Policy; Industrial Organization; International Relations/Trade; D24; L11; L25; L66.
Ano: 2012 URL: http://purl.umn.edu/125221
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AGRICULTURAL PRODUCTIVITY ANALYSIS OF EUROPEAN UNION AND EASTERN REGIONS AgEcon
Serrao, Amilcar.
This research work uses stochastic frontier analysis (SFA) and data envelopment analysis (DEA) to examine the sources of agricultural productivity growth over time and of productivity differences among countries and regions in European Union over the period 1980-1998. A comparison of the mean productivity scores obtained by the two approaches show that DEA results are higher than in SFA results, because DEA fits a tighter (more flexible) frontier than the translog frontier. This study is a valuable warning for people to be carefully about the effects of the methodology choice upon their results and to use more than one approach if they suspect that it may have some influence.
Tipo: Conference Paper or Presentation Palavras-chave: Data Envelopment Analysis; Stochastic Frontier Analysis; Technical Efficiency Change; Technical Change; Total Factor Productivity Change; European Union.; Productivity Analysis; Q12; D24.
Ano: 2003 URL: http://purl.umn.edu/22167
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An Examination of the Tradeoff between Net Return, Risk, and Water Quality for Crop Rotations in South Central Kansas AgEcon
Langemeier, Michael R.; Nelson, Nathan; Parajuli, Prem; Perkins, Seth.
This paper determined the optimal crop rotation in South Central Kansas. The model incorporated net return, risk, and water quality. In general, water quality improved as tillage was reduced within a rotation type and by adding an alfalfa rotation. The optimal crop rotation mixes included wheat, grain sorghum, soybeans, and alfalfa.
Tipo: Conference Paper or Presentation Palavras-chave: Water quality; Optimal crop rotation; Risk and return; Farm Management; D24; D81.
Ano: 2010 URL: http://purl.umn.edu/56407
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An Updated Look at the Recovery of Agricultural Productivity in Sub-Saharan Africa AgEcon
Nin Pratt, Alejandro; Yu, Bingxin.
We analyze the evolution of Sub-Saharan Africa’s agricultural total factor productivity (TFP) over the past 40 years, looking for evidence of recent changes in growth patterns using a nonparametric Malmquist index. Our TFP estimates show a remarkable recovery in the performance of Sub-Saharan Africa’s agriculture during between 1984 and 2003 after a long period of poor performance and decline. That recovery is the consequence of improved efficiency in production resulting from changes in the output structure and an adjustment in the use of inputs, including an overall net reduction in fertilizer use but increased fertilizer use in most of the best-performing countries. Policy changes implemented by African countries between the mid-1980s and the second...
Tipo: Conference Paper or Presentation Palavras-chave: Agriculture; Total factor productivity; Sub-Saharan Africa; Agricultural and Food Policy; Productivity Analysis; D24; Q18.
Ano: 2009 URL: http://purl.umn.edu/51731
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Analisis Malmquist y DEA intertermporal de las agriculturas de la Union Europea AgEcon
Aldaz, Natalia; Millan, Joaquin A..
En este trabajo se realiza un análisis comparado de dos métodos no paramétricos de medida de productividad total de los factores con datos de panel basados en programación: índices de Malmquist y un modelo DEA intertemporal que permite acotar las medidas de eficiencia y progreso técnico, suponiendo cambio técnico no regresivo. La aplicación se realiza sobre las agriculturas de los países de la Unión Europea, encontrándose algunas diferencias importantes entre ambos enfoques. Los resultados sugieren menor crecimiento de productividad agraria y, sobre todo, una ordenación distinta de países en relación con dichos crecimientos que los encontrados en otros trabajos. Palabras clave: Productividad, DEA, Agricultura, Europa, Datos de panel. SUMMARY This paper...
Tipo: Journal Article Palavras-chave: Productivity; DEA; Agriculture; Europe; Panel data; Agricultural and Food Policy; D24; O47; Q10.
Ano: 2003 URL: http://purl.umn.edu/28796
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Analyzing the Economics Values of An Alternative Preprocessing Facility in the Biomass Feedstocks - Biorefinery Supply Chain AgEcon
Yu, Tun-Hsiang (Edward); Larson, James A.; Gao, Yuan; English, Burton C..
It is generally believed that preprocessing procedure can reduce the transportation and storage costs of biomass feedstock for biofuel production by condensing the feedstock’s size. However, the capital costs of preprocessing facilities could be significant in the feedstock logistics system. Applying a GIS and mixed-integer mathematical programming model, this study evaluates the economic values of a preprocessing technology, stretch‐wrap baling, in the biomass feedstock supply chain for a potential commercial-scale switchgrass biorefinery in East Tennessee. Preliminary results suggest that the stretch-wrap baling equipment outperforms the conventional hay harvest methods in terms of total delivered costs. Although the densification process involves...
Tipo: Conference Paper or Presentation Palavras-chave: Biomass feedstock; Cellulosic biofuel; Logistic costs; Preprocessing technology; Crop Production/Industries; Resource /Energy Economics and Policy; Q16; D24.
Ano: 2011 URL: http://purl.umn.edu/103993
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Applying regression quantiles to farm efficiency estimation AgEcon
Kaditi, Eleni A.; Nitsi, Elisavet I..
This article is concerned with the methodological question of frontier production functions estimation for agriculture, and the appropriateness of regression quantiles, as a useful semi-parametric approach. Better insights are reached using the proposed methodology that provides robust farm efficiency scores estimates. Using the 2007 Farm Accountancy Data Network (FADN) data for Greece, analysis shows that the distribution of efficiency scores is closer to normality when employing regression quantiles, while underestimation of efficiency obtained by other parametric or deterministic methods based on the conditional mean can be avoided. The results further suggest that government support aimed at enhancing farms viability should be directed towards payments...
Tipo: Conference Paper or Presentation Palavras-chave: Efficiency; Quantile Regression; Agriculture; Agricultural and Food Policy; Productivity Analysis; Research Methods/ Statistical Methods; C14; D24; Q18.
Ano: 2010 URL: http://purl.umn.edu/61081
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Assessing the Perspectives of EU Cotton Farming: Technical and Scale Efficiencies of Greek Cotton Growers AgEcon
Pantzios, Christos J.; Rozakis, Stelios; Tzouvelekas, Vangelis.
Utilizing the stochastic frontier approach, this paper estimates output and input-oriented technical and scale efficiency levels for a sample of cotton-growing farms in Thessaly, Greece. The empirical results suggest that Greek cotton farm operations are technically and scale inefficient. There is a considerable scope for improvement in resource use and thereby in farm income of cotton farms; Greek cotton farmers could reduce production costs by 20.4%, making more efficient utilization of the existing production technology. Factors responsible for the technical efficiency differentials observed among cotton-growers include the farmer's age and education as well as the farm's land fragmentation and output specialization.
Tipo: Conference Paper or Presentation Palavras-chave: Technical and scale inefficiency; Stochastic frontier models; Cotton production; Greece; Crop Production/Industries; C33; D24; O13.
Ano: 2002 URL: http://purl.umn.edu/24844
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Buyback Programs: Goals, Objectives, and Industry Restructuring in Fisheries AgEcon
Kirkley, James E.; Walden, John B.; Waters, James R..
National Oceanic and Atmospheric Administration Fisheries has conducted several buyback programs to reduce harvesting capacity in fisheries. These programs have attempted to maximize capacity reduction given a fixed budget. However, restructuring issues have not been considered. We explore the possibility of satisfying three different buyback objective We examine the black sea bass trap fishery and determine the number of vessels given different allowable catch levels and objectives of maximizing technical efficiency, capacity utilization, and vessels in the fishery. We find considerable variation in the number of vessels allowed to remain in the fishery given the different objectives.
Tipo: Journal Article Palavras-chave: Capacity utilization; Data Envelopment Analysis; Fishery buyback programs; Fishing capacity; C61; D24; Q22; Q28.
Ano: 2004 URL: http://purl.umn.edu/43422
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CAP reform and its impact on structural change and productivity growth: A cross country analysis AgEcon
Kazukauskas, Andrius; Newman, Carol F..
The recent reforms of the Common Agricultural Policy (CAP) have exposed the European agricultural sector to a new set of constraints and challenges. The decoupling of direct payments from production is expected to make production decisions more market-oriented as farmers move from mainly subsidy revenue maximization objectives toward profit maximizing behaviour. However, ex-post analyses of the productivity of farms have yet to uncover any evidence of a positive effect of the decoupling policy on farm productivity. Using the Irish, Danish and Dutch farm level data, we identify the extent to which both system and product switching after the introduction of decoupling has occurred and to what extent these changes have contributed to productivity growth in...
Tipo: Conference Paper or Presentation Palavras-chave: Productivity; Semiparametric estimation; Farming; Decoupling; Agricultural and Food Policy; Farm Management; Land Economics/Use; D24; Q12; Q18.
Ano: 2010 URL: http://purl.umn.edu/61103
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Capital Use Intensity and Productivity Biases AgEcon
Andersen, Matthew A.; Alston, Julian M.; Pardey, Philip G..
This is a substantially revised version of “Capital Use Intensity and Productivity Biases.” Andersen, Matt A.; Alston, Julian M.; Pardey, Philip G., St. Paul, MN: University of Minnesota, Department of Applied Economics; University of Minnesota, International Science and Technology Practice and Policy (InSTePP), 2007. (Staff paper P07-06; InSTePP paper 07-02)
Tipo: Working or Discussion Paper Palavras-chave: U.S. agriculture; Pro-cyclical productivity; Capital utilization; Primal productivity bias; Productivity Analysis; D24; C51; Q1; O4; O47.
Ano: 2010 URL: http://purl.umn.edu/93143
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China’s Electricity Market Reform and Power Plants Efficiency AgEcon
Ma, Chunbo; Zhao, Xiaoli; Ma, Qian; Zhao, Yue.
In the past three decades, Chinese electricity industry has experienced a series of regulatory reforms serving different purposes at different stages. In 2002, the former vertically integrated electricity utility - the State Power Corporation (SPC) – was divested and the generation sector was separated from the transmission and distribution networks in an effort to improve production efficiency. In this paper we study the impact of the reform on efficiency of fossil-fired power plants using plant-level data during 2000-2008. Our results from the data envelopment analysis (DEA) and panel regressions show that: 1) the total factor productivity (TFP) growth mainly comes from technological change; 2) the technical efficiency of previously SPC-managed power...
Tipo: Working or Discussion Paper Palavras-chave: Efficiency; DEA; Malmquist Index; China; Electricity; Industrial Organization; Productivity Analysis; Resource /Energy Economics and Policy; D24; L11; L51; L94; L98.
Ano: 2011 URL: http://purl.umn.edu/117811
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Could small dairy farms in Switzerland compete with their French counterparts? A metafrontier analysis during 1990-2004 AgEcon
Ferjani, Ali; Latruffe, Laure.
The objective of the paper is to investigate whether Swiss farms specialised in dairy (the prevailing production of the country), which are small in international standards, would have a survival potential if they had to compete more directly with EU farms. More specifically, we investigate whether Swiss dairy farms would be able to compete with their French counterparts (located in mountainous areas, but larger than Swiss ones) in a future made of increased globalisation and reduced borders. For this we evaluate which country, during the period 1990-2004, would have been more able to use efficiently a common hypothetical technology, and would have had a more productive (own) technology. Efficiency scores and technology ratios are calculated using the...
Tipo: Conference Paper or Presentation Palavras-chave: Technical efficiency; Technology gap; Data Envelopment Analysis; Dairy farming; Switzerland; France; Agricultural and Food Policy; Productivity Analysis; Q12; D24.
Ano: 2009 URL: http://purl.umn.edu/52828
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