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Wheat / Flour Price Transmission and Agricultural Policies in Ukraine: A Markov-Switching Vector Error Correction Approach AgEcon
Brümmer, Bernhard; Zorya, Sergiy.
The analysis of price transmission between raw and processed agricultural products in transition countries is complicated by the frequently changing conditions on their way from plan to market. We utilise a Markov-switching vector error correction model to allow for multiple regime shifts in the price relationship between wheat and wheat flour in Ukraine from June 2000 to November 2004. The analysis reveals four regimes. The observed temporal pattern of these regimes can be matched with certain political and economic events in Ukraine. In particular, we find a strong link between the 'high uncertainty' regime and discretionary policy interventions in 2003.
Tipo: Conference Paper or Presentation Palavras-chave: Markov-switching vector error correction model; Vertical price transmission; Regime shifts; Grain policies; Ukraine; Demand and Price Analysis; Industrial Organization; C22; Q11; Q18.
Ano: 2005 URL: http://purl.umn.edu/24624
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Agglomeration Economies in Ukrainian Dairy Sector: a Marked Point Process Approach AgEcon
Brümmer, Bernhard; von Cramon-Taubadel, Stephan; Nivievskyi, Oleg; Schlather, Martin.
Even after more than 15 years of transition from plan to market, agriculture in Ukraine still faces many challenges in terms of its structure. The evidence in the literature points to significant heterogeneity of technical efficiency and productivity scores in Ukraine. Moreover, both the recently approved WTO accession, and the ongoing negotiations on a free trade agreement with the EU will require further improvements in productivity and competitiveness at the farm level. Using farm-level data for 2004-2005, we study the presence and possible causes of agglomeration economies in Ukrainian dairy sector. One of the most important results is that there are agglomeration effects in the sector. The performance of dairy farms is influenced by the performance of...
Tipo: Conference Paper or Presentation Palavras-chave: Ukraine; Dairy farming; Order-m frontier; Spatial dependence; Agglomeration.; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Food Consumption/Nutrition/Food Safety; Labor and Human Capital.
Ano: 2010 URL: http://purl.umn.edu/94990
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Institutional Changes for Agricultural and Rural Development in the CEEC and CIS Region AgEcon
Koester, Ulrich; Brümmer, Bernhard.
The paper emphasizes the importance of embedded institutions for the transformation of the agricultural sector and rural economies in the transition countries and identifies and analyses institutional aspects regarding agriculture and rural development common to the transition countries. It focuses on the institutional dimension of reform policies, i.e. on the political economy aspects of the transition process that were decisive for the success or failure of the reforms. The importance of identifying the “mental models” of various stakeholders during the transition process is emphasized and the reasons are explored why the transition process in the countries of Central and Eastern Europe has not resulted in a restructuring of the agricultural sector...
Tipo: Journal Article Palavras-chave: Transition countries; Agriculture; Agricultural reform; Agricultural policy; Rural development; Farm structure; Institutions; Community/Rural/Urban Development; International Development.
Ano: 2006 URL: http://purl.umn.edu/112605
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Technical Efficiency Effects of Technological Change: Another Perspective on GM Crops AgEcon
Weaver, Robert D.; Curtiss, Jarmila; Brümmer, Bernhard.
An important approach to reducing persistent technical inefficiency is through technical change. This paper considers the case of genetically modified crop production. A stochastic frontier approach is used to examine how a drastic change from non-GM to GM technology effects the position of the production frontier as well as the extent and nature of technical inefficiency. A one-step method is applied to consider firm-level effects on technical inefficiency. Using soybean production from the U.S. we find that GM technology improves productivity and reduces technical inefficiency though these effects vary across farm characteristics.
Tipo: Conference Paper or Presentation Palavras-chave: Technical efficiency; Technical change; Genetically-modified; Soybean; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies; D24; O33.
Ano: 2005 URL: http://purl.umn.edu/24528
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Rolle der agrarökonomischen Forschung für Armutsbekämpfung in Entwicklungsländern AgEcon
Brümmer, Bernhard; von Cramon-Taubadel, Stephan; Qaim, Matin.
Tipo: Journal Article Palavras-chave: Food Security and Poverty; International Development.
Ano: 2008 URL: http://purl.umn.edu/97698
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Estimation Issues in Single Commodity Gravity Trade Models AgEcon
Prehn, Soren; Brümmer, Bernhard.
Recently gravity trade models are applied to disaggregated trade data. Here many zeros are characteristic. In the presence of excess zeros usual Poisson Pseudo Maximum Likelihood (PPML) is still consistent, the variance covariance matrix however is invalid. Correct economic interpretation however requires also the last. So alternative estimators are looked for. Staub & Winkelmann [2010] argue that zeroinflated count data models (i.e. zero-inflated Poisson / Negative Binomial Pseudo Maximum Likelihood (ZIPPML / ZINBPML)) are no alternative since under model misspecification these estimators are inconsistent. Yet zero-inflated Poisson Quasi- Likelihood (PQL) is a reliable alternative. It is consistent even under model misspecifications and beyond that...
Tipo: Conference Paper or Presentation Palavras-chave: Gravity Model; Homogeneous Firm Trade Model; Excess Zeros; Overdispersion; Negatively Skewed Distribution; Poisson Quasi Likelihood; Two Part Model; International Relations/Trade.
Ano: 2011 URL: http://purl.umn.edu/114776
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Vertical Price Transmission between Wheat and Flour in Ukraine: A Markov-Switching Vector Error Correction Approach AgEcon
Brümmer, Bernhard; von Cramon-Taubadel, Stephan; Zorya, Sergiy.
The analysis of price transmission in transition countries is complicated by their often unstable policy environments. We utilise a Markov-switching vector error correction model (MSVECM) to allow for multiple regime shifts in the price relationship between wheat and wheat flour in Ukraine from June 2000 to November 2004. The analysis reveals four regimes. The observed temporal pattern of these regimes corresponds well to political and economic events in Ukraine. In particular, we find a strong link between a 'high uncertainty' regime and discretionary policy interventions in 2003, confirming that ad hoc policy responses to fluctuations in Ukrainian grain harvests have tended to increase rather than reduce instability. The Markov-switching VECM is shown to...
Tipo: Conference Paper or Presentation Palavras-chave: Markov-switching vector error correction model; Vertical price transmission; Regime shifts; Grain policies; Ukraine; Industrial Organization; C22; Q11; Q18.
Ano: 2006 URL: http://purl.umn.edu/25575
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POLICY REFORM AND PRODUCTIVITY CHANGE IN CHINESE AGRICULTURE: A DISTANCE FUNCTION APPROACH AgEcon
Glauben, Thomas; Lu, Wencong C.; Brümmer, Bernhard.
Agricultural policy reform has been an important source of change in the Chinese agricultural sector. The reforms led to productivity growth and helped China in pursuing its self- sufficiency goal especially in the grain sector. To analyse whether observable productivity growth stems from technologically induced components, or from the market induced parts, a multi-input-multi-output model is derived using an econometric distance function framework. A decomposition allows to distinguish allocative effects, scale effects, technological change, and technical efficiency change. Data on farms in Zhejiang from 1986 to 1999 are used to analyse the impact of policy reform.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural and Food Policy.
Ano: 2003 URL: http://purl.umn.edu/25896
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DETERMINANTS OF ARGENTINEAN WINE PRICES IN THE U.S. MARKET AgEcon
San Martin, Guillermo S.; Brümmer, Bernhard; Troncoso, Javier L..
A hedonic price function for Argentinean wines in the U.S market is estimated in order to evaluate the effect of the most important attributes of wine on price. Results show that labeling practices and the choice of the right wine quality attributes are far more influential on price than expert panel opinions or oenological wine improvements such as aging.
Tipo: Working or Discussion Paper Palavras-chave: Wine prices; Argentinean wine; Hedonic price model; Demand and Price Analysis.
Ano: 2008 URL: http://purl.umn.edu/37327
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Estimating Technical Efficiency, Input substitution and complementary effects using Output Distance Function: A study of Cassava production in Nigeria AgEcon
Ogundari, Kolawole; Brümmer, Bernhard.
In this study, we estimate an output distance function in the context of a multi-output and multi-input production technology by stochastic frontier techniques. Unbalanced panel data for smallholder farms that grown cassava and other crops in Southwestern Nigeria covering 2006/07 to 2008/09 farming seasons is used for the analysis. The results show that the marginal rate of transformation (MRT) between “other crops” grown by the farmers and cassava produced relative to the output mix is negative and significantly different from zero. We observed also that increasing returns-to-scale as well as technical progress characterized cassava production in the region. Furthermore, fertilizer and pesticides are found to have significant substitution effects on...
Tipo: Journal Article Palavras-chave: Cassava; Technical efficiency; Inputs substitution; Complementary effects; Crop Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/95773
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Demand for Irrigation Water for Pistachio Production from Depleting Groundwater Resources: Spatial Econometric Approach AgEcon
Jaghdani, Tinoush Jamali; Brümmer, Bernhard.
Depletion of groundwater resources is an international problem, and groundwater is probably the world’s most extracted raw material. The agriculture sector is one of the biggest users of groundwater resources for irrigation activities, and it plays an important role in the depletion of these resources. The estimation of demand function for groundwater resources is the first step toward any policy recommendation in this field of research. However, only scarce attention has been given to empirical studies of the demand structure of groundwater resources by the help of econometrics and considering the quality of the resources in the context of a single aquifer. Therefore, an empirical estimation of the demand function for individual users which considers...
Tipo: Conference Paper or Presentation Palavras-chave: Groundwater resources; Derived demand function; Pistachio; Rafsanjan; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/114457
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ESTIMATION ISSUES IN SINGLE COMMODITY GRAVITY TRADE MODELS AgEcon
Prehn, Soren; Brümmer, Bernhard.
Recently gravity trade models are applied to disaggregated trade data. Here many zeros are characteristic. In the presence of excess zeros usual Poisson Pseudo Maximum Likelihood (PPML) is still consistent, the variance covariance matrix however is invalid. Correct economic interpretation however requires also the last. So alternative estimators are looked for. STAUB &WINKELMANN (2010) argue that zero-inflated count data models (i.e. zero-inflated Poisson / Negative Binomial Pseudo Maximum Likelihood (ZIPPML / ZINBPML)) are no alternative since under model misspecification these estimators are inconsistent. Yet zeroinflated Poisson Quasi-Likelihood (PQL) is a reliable alternative. It is consistent even under model misspecifications and beyond that...
Tipo: Conference Paper or Presentation Palavras-chave: Gravity Model; Excess Zeros; Poisson Quasi Likelihood; Generalised Two Part Model; Gravitationsmodell; Exzess an Nullen; Poisson Quasi Likelihood; Generalisiertes Zwei-Teile Modell; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Financial Economics.
Ano: 2011 URL: http://purl.umn.edu/114524
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Auction Experiments and Simulations of Milk Quota Exchanges AgEcon
Brümmer, Bernhard; Loy, Jens-Peter; Requate, Till.
Since 2000 Germany has introduced a fairly unique market mechanism to trade milk quotas between dairy farms. The two major features are: (1) a quasi auctioning system that produces excess demands which are covered by state reserves free of charge and (2) a price band that is used to exclude highest bids. For both features an experimental design is developed to study the impact in reference to a regular seller’s sealed bid double auction. Results show that both treatments lead to significant misallocations. These are due to the direct impact of regulations and due to an imperfect adjustment of bidding functions. The major goal of the market design to reduce quota prices is reached, however, at significant trade losses.
Tipo: Conference Paper or Presentation Palavras-chave: Livestock Production/Industries.
Ano: 2011 URL: http://purl.umn.edu/114377
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Die Gemeinsame Agrarpolitik der EU: Die Wirkungen von Direktzahlungen aus entwicklungspolitischer Perspektive AgEcon
Brümmer, Bernhard; Fahlbusch, Markus.
In der Diskussion über die Fortführung der Gemeinsamen Agrarpolitik nach 2014 spielen die entkoppelten Direktzahlungen eine dominierende Rolle. Während sich die Debatte innerhalb der EU vor allem um die langfristige Begründung solcher Direktzahlungen dreht, steht aus Sicht der internationalen Handelspartner stärker die Frage im Vordergrund, inwieweit von den formal entkoppelten Zahlungen nicht doch Produktions- und damit Handelswirkungen ausgehen. Vor diesem Hintergrund werden in der vorliegenden Studie zunächst die theoretischen Wirkungen, die von formal entkoppelten Direktzahlungen auf die Erzeugung von Agrargütern ausgehen können, erörtert. Anschließend wird mit Hilfe einer empirischen Analyse der Handelsströme bei ausgewählten Agrarprodukten im Export...
Tipo: Working Paper Palavras-chave: Handelsanalyse; Politikfolgenabschätzung; Agricultural and Food Policy; Food Security and Poverty; International Development; International Relations/Trade; F-13; F-14; Q-11; Q-13; Q-17; Q-18.
Ano: 2012 URL: http://purl.umn.edu/123355
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Impacts of Export Controls On Wheat Markets During the Food Crisis 2007/2008 in Russia and Ukraine AgEcon
Goetz, Linde; Glauben, Thomas; Brümmer, Bernhard.
This paper investigates the impacts of export controls in Russia and Ukraine on wheat world market price transmission during the 2007/2008 global food crisis. Russia and Ukraine aimed to reduce wheat exports induced by extraordinarily high world market prices to secure sufficient wheat supply on the domestic markets. Utilizing a Markov-Switching vector error correction model (MSVECM), we find that the temporary export restrictions induced negative effects on wheat markets in Russia and Ukraine. Although instability increased on the world markets itself, we have shown that the increase in the market instability was particularly pronounced in Russia and Ukraine. Also, the export restrictions dampened price transmission to the farmers’ prices, which pushed...
Tipo: Conference Paper or Presentation Palavras-chave: International price transmission; Wheat market; Food crisis; Markov switching error correction model; Russia; Ukraine; Demand and Price Analysis; International Relations/Trade.
Ano: 2010 URL: http://purl.umn.edu/61626
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Structural change in European calf markets: Policy decoupling and movement restrictions AgEcon
Ihle, Rico; Brümmer, Bernhard; Thompson, Stanley R..
We analyse weekly calf prices from 2003 to 2009 to assess the impact of two important events which changed the structure of European cattle markets. We find the four European calf markets studied to be integrated. The decoupling of farm payments in the framework of the 2003 reforms of the Common Agricultural Policy is found to reduce prices. We ascertain that the outbreak of the Blue Tongue disease induced a structural change in some of the markets. Using counterfactual scenarios, we provide an indication of the effects resulting from granting member states a high degree of discretion in implementation.
Tipo: Conference Paper or Presentation Palavras-chave: 2003 CAP reform; Cattle market; Decoupling; European Union; Market integration; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010 URL: http://purl.umn.edu/61085
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INVESTIGATING RAPESEED PRICE VOLATILITIES IN THE COURSE OF THE FOOD CRISIS AgEcon
Busse, Stefan; Brümmer, Bernhard; Ihle, Rico.
C2_3
Tipo: Conference Paper or Presentation Palavras-chave: Multivariate GARCH; MATIF; Rapeseed; Crude oil; Volatilities; Food crisis; Demand and Price Analysis; Research Methods/ Statistical Methods; C32; E44; G1; Q11; Q13; Q49.
Ano: 2010 URL: http://purl.umn.edu/93957
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Policy Reform and Productivity Change in Chinese Agriculture: A Distance Function Approach AgEcon
Brümmer, Bernhard; Glauben, Thomas; Lu, Wencong C..
Agricultural policy reform has been an important source of change in the Chinese agricultural sector. The reforms led to productivity growth and helped China in pursuing its self-sufficiency goal especially in the grain sector. To analyse whether observable productivity growth stems from technologically induced components, or from the market induced parts, a multi-input-multi-output model is derived using an econometric distance function framework. A decomposition allows to distinguish allocative effects, scale effects, technological change, and technical efficiency change. Data on farms in Zhejiang from 1986 to 1999 are used to analyse the impact of policy reform.
Tipo: Conference Paper or Presentation Palavras-chave: Productivity growth; China; Policy reform; Distance function; Productivity Analysis.
Ano: 2002 URL: http://purl.umn.edu/24779
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Determinants of Economic Growth in Organic Farming: The Case of Bavaria and Baden-Wuerttemberg AgEcon
Brenes Muñoz, Thelma; Lakner, Sebastian; Brümmer, Bernhard.
The organic sector in Germany has experienced a substantial growth since the beginning of the 1990s until today. During this process of expansion, most organic farms have grown in terms of factor endowment, while others have disappeared or reconverted to conventional agriculture. This paper investigates the potential determinants of farms growth in the organic sector. This paper models potential factors that might have an impact on the economic growth of 332 organic farms in Bavaria and Baden-Wuerttemberg. The econometric model was developed based on ‘Gibrat’s Law’, using a fixed effect method (FE). The results suggest that direct marketing and livestock intensity significantly influence farm growth. In addition, less efficient farms grew faster than more...
Tipo: Conference Paper or Presentation Palavras-chave: Farm-growth; Gibrat’s law; Technical efficiency; Direct marketing; Farm Management.
Ano: 2011 URL: http://purl.umn.edu/114270
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The Pattern of Integration between Fossil Fuel and Vegetable Oil Markets: The Case of Biodiesel in Germany AgEcon
Busse, Stefan; Brümmer, Bernhard; Ihle, Rico.
With this paper, we provide the first quantitative investigation of vertical price transmission in the biodiesel supply chain in Germany with the focus on the developments during the food crisis and the impact of subsidized US biodiesel exports. With the strong promotion of the production and use of biodiesel during the first half of the past decade, the German biodiesel market became the largest national biodiesel market worldwide. This analysis utilizes prices of rapeseed oil, soya oil, biodiesel and crude oil over a sample period covering the rapid growth of the German demand in 2002 until its decline in 2009. The effects of both the market development and different policies on price transmission are analyzed in detail. Due to the numerous changes in...
Tipo: Conference Paper or Presentation Palavras-chave: Biodiesel; Cointegration; Nonlinear vector error correction model; Regime-dependent model; Markov-switching; Agricultural and Food Policy; Demand and Price Analysis; C22; Q11; Q18.
Ano: 2010 URL: http://purl.umn.edu/61010
Registros recuperados: 36
Primeira ... 12 ... Última
 

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