rural transformation inequality and the origins of microfinance abstract what determines the development of rural financial markets starting from a simple theoretical framework we derive the factors shaping the market entry of rural microfinance institutions across time and space we provide empirical evidence for these determinants using the expansion of credit cooperatives in the 236 eastern counties of prussia between 1852 and 1913 this setting is attractive as it provides a free market benchmark scenario without public ownership subsidization or direct regulatory intervention furthermore we exploit features of our historical set up to identify causal effects the results show that declining agricultural staple prices as a feature of structural transformation leads to the emergence of credit cooperatives similarly declining bank lending rates contribute to their rise low asset sizes and land inequality inhibit the regional spread of cooperatives while ethnic heterogeneity has ambiguous effects we also offer empirical evidence suggesting that credit cooperatives accelerated rural transformation by diversifying farm outputs

food versus fuel an updated and expanded evidence abstract this paper replicates the study of zhang et al 2010 food versus fuel what do prices tell us energy policy 38 pp 445 451 we confirm the findings of the original paper that there was only a weak relationship between ethanol and food commodities in the period between march 1989 and july 2008 in addition we extend that study and examine the cointegration relationship between biofuels and related commodities for a considerably enlarged dataset 3 vs 1 market 26 vs 8 commodities analysis up till 2017 vs 2008 weekly vs monthly data frequency focusing on the biofuel markets of brazil the eu and the usa in the three separate periods before during and after the food crisis of 2007 and 2008 we show that studying the time variation of the relationships plays an essential role in their proper understanding our results help to clarify the wide extensive discussion about the role of biofuels prices in food shortages manifested particularly during the food crises in agreement with the original study we confirm that price series data do not support strong statements about biofuels uniformly serving as main leading source of high food prices and consequently the food shortages

correlations between biofuels and related commodities before and during the food crisis a taxonomy perspective abstract in this paper we analyze the relationships between the prices of biodiesel ethanol and related fuels and agricultural commodities with a use of minimal spanning trees and hierarchical trees to distinguish between short term and medium term effects we construct these trees for different frequencies weekly and monthly we find that in short term both ethanol and biodiesel are very weakly connected with the other commodities in medium term the biofuels network becomes more structured the system splits into two well separated branches a fuels part and a food part biodiesel tends to the fuels branch and ethanol to the food branch when the periods before and after the food crisis of 2007 2008 are compared the connections are much stronger for the post crisis period this is the first application of this methodology on the biofuel systems

crude oil corn ethanol nexus a contextual approach this paper offers a holistic study on the complex relationships between crude oil corn and ethanol during a turbulent period between 2006 and end of 2011 through a holistic mapping of the current market situation and a contextual analytical design we show that there exists a strong relationship between crude oil and corn markets on one side and crude oil and ethanol on the other however the price relationship between corn and ethanol was revealed to be less straightforward and is driven by the us government fuel policy furthermore the study indicates that corn markets have became more prone to volatility due to ethanol production especially when the demand for corn is high and or the crude oil prices are high enough to create a competitive market for ethanol

bayesian estimation and selection of nonlinear vector error correction models the case of the sugar ethanol oil nexus in brazil nonlinear adjustment toward long run price equilibrium relationships in the sugar ethanol oil nexus in brazil is examined we develop generalized bivariate error correction models that allow for cointegration between sugar ethanol and oil prices where dynamic adjustments are potentially nonlinear functions of the disequilibrium errors a range of models are estimated using bayesian monte carlo markov chain algorithms and compared using bayesian model selection methods the results suggest that the long run drivers of brazilian sugar prices are oil prices and that there are nonlinearities in the adjustment processes of sugar and ethanol prices to oil price but linear adjustment between ethanol and sugar prices

financialization in commodity markets a passing trend or the new normal abstract in this paper we show that large inflows into commodity investments a recent phenomenon known as financialization has changed the behavior and dependence structure between commodities and the general stock market the common perception is that the increase in comovements is the result of distressed investors selling both assets during the 2007 2009 financial crisis we show that financial distress alone cannot explain the size and persistence of comovements instead we argue that commodities have become an investment style for institutional investors given that institutional investors continue to target funds into commodities we predict spillovers between commodities and the stock market to remain high in the future

considering macroeconomic indicators in the food before fuel nexus abstract a structural vector autoregression svar model along with a direct acyclic graph is employed to decompose how supply demand structural shocks affect food and fuel markets the results support the hypothesis that fundamental market forces of demand and supply are the main drivers of food price volatility increased biofuel production may cause short run food price increases but not long run price shifts decentralized freely operating markets will mitigate the persistence of any price shocks and restore prices to their long run trends the main policy implications are that oil gasoline and ethanol market shocks do not spillover into grain prices which indicates no long run food before fuel issue in the short run grain prices can spike due to market shocks so programs designed to blunt these price spikes may be warranted

blend wall economics relaxing us ethanol regulations can lead to increased use of fossil fuels abstract the us environmental protection agency is currently considering a waiver allowing an increase in the fuel ethanol blend limit the blend wall from 10 e10 up to 15 e15 justifications for this waiver are reduced vehicle fuel prices and less consumption of petroleum gasoline leading to energy security a theoretical examination of this waiver reveals an anomaly where a relaxation of this blend wall elicits a demand response under a wide range of elasticities this demand response can actually increase the consumption of petroleum gasoline and thus lead to greater energy insecurity the economics supporting this result and associated policy implications are developed and discussed

food energy nexus in europe price volatility approach abstract the literature on food biofuel price volatility spillovers is growing published articles so far have widely ignored nonlinearities and the influence of exogenous variables on volatility patterns this article allows for these issues when characterizing eu biodiesel industry price dynamics while brazilian and us ethanol markets have been thoroughly investigated less attention has been paid to eu biodiesel markets pure eu biodiesel and rapeseed oil prices are the object of our research two different methods are applied to model these data a parametric approach and long et al s 2011 semiparametric approach empirical results suggest significant asymmetries in volatility spillovers between pure biodiesel and rapeseed oil prices rapeseed stock levels and euro dollar exchange rates are found to play a significant role in reducing food and biofuel price volatilities

monitoring global and national food price crises this paper develops calibrates and runs a new food price crisis monitoring framework the proposed framework has an integrated approach to capture global and national vulnerabilities and offers an alternative to existing food insecurity information systems which suffer from a lack of consensus on the definition of food crisis the framework successfully identifies the recent episodes of food price crises in 2008 2011 and 2012 this paper also recommends ways in which the framework could be refined to increase country coverage and provide better information on country level food inflation

allowing the data to speak freely the macroeconometrics of the cointegrated vector autoregression all economists agree that reality is complex and that the tools with which we confront it are far simpler theorists sometimes deal with this gap by asking very little of the data start with the stylized facts and develop relatively sim ply theories to account for them unfortunately stylized facts are often too stylized to discrimi nate among plausible candidate theories or to provide a basis for accurate quantification alternative approaches start from the other end and ask much of the data one european tra dition which derives from trygve haavelmo s the probability approach in econometrics 119442 focuses on obtaining good character izations of data before testing and on drawing out the implications of data that ought to con strain economic theorizing the application of the cointegrated vector autoregression 1cvar2

volatility linkages between energy and agricultural commodity prices abstract we investigate price and volatility risk originating in linkages between energy and agricultural commodity prices in germany and study their dynamics over time we propose an econometric approach to quantify the volatility and correlation risk structure which has a large impact for investment and hedging strategies of market participants as well as for policy makers volatilities and their short and long run linkages are analyzed using an asymmetric dynamic conditional correlation garch model as well as a multivariate multiplicative volatility model our approach provides a flexible and accurate fitting procedure for volatility and correlation risk we find that in the long run prices move together and preserve an equilibrium while correlations are mostly positive with persistent market shocks our results reveal that concerns about biodiesel being the cause of high and volatile agricultural commodity prices are rather unjustified

biofuel related price transmission literature a review abstract in this article an extensive review of the rapidly growing biofuel related time series literature is carried out the data used the modeling techniques and the main findings of this literature are discussed providing a review of this flourishing research area is relevant as a guidepost for future research this literature concludes that energy prices drive long run agricultural price levels and that instability in energy markets is transferred to food markets

interest rate interactions in the classical gold standard 1880 1914 was there any monetary independence this paper examines an hypothesis of svensson 1994 journal of monetary economics 33 157 199 that a credible target zone can confer on a country a degree of independence in the operation of its monetary policy even when exchange rates are fixed we test this hypothesis for the classical gold standard using a newly created monthly data base for the period 1880 1913 building on the recently noted finding that the classical gold standard represented a credible well behaved target zone system we propose a number of ways of testing the svensson model our main finding is that the classical gold standard did indeed confer some independence in the operation of monetary policy for participating countries this would seem to have an important bearing on the kind of institutional framework required for a modern day target zone to function effectively and in particular to weather speculative attacks

price formation in the german biodiesel supply chain a markov switching vector error correction modeling approach changing linkages between agricultural and energy markets have attracted considerable attention in research and policy discussions during recent years as one of the largest biofuel markets worldwide the german biodiesel market is of particular interest it has grown rapidly since the beginning of the new millennium with this growth being driven mainly by political interventions vertical price transmission channels along the biodiesel supply chain are analyzed in this study we examine the relationship between diesel and biodiesel prices and between rapeseed oil soy oil and biodiesel prices between 2002 and 2008 due to pronounced changes in market conditions and the policy framework a regime dependent markov switching vector error correction model is used the regimes are characterized by markedly different price adjustment behaviors before 2005 and from late 2007 onward a regime characterized by the strong orientation of biodiesel prices toward diesel prices dominates between 2005 and 2007 biodiesel and rapeseed oil prices are mutually interdependent frequent switches between the regimes of the price dynamics during this period indicate a high extent of uncertainty and instability in the market

causality and predictability in distribution the ethanol food price relation revisited abstract this paper examines the relationship between biofuels field crops and cattle prices in the u s from a new perspective we focus on predictability in distribution by asking whether ethanol returns can be used to forecast different parts of field crops and cattle returns distribution or vice versa density forecasts are constructed using conditional autoregressive expectile models estimated with asymmetric least squares forecast evaluation relies on quantile weighed scoring rules which identify regions of the distribution of interest to the analyst results show that both the centre and the left tail of the ethanol returns distribution can be predicted by using field crops returns on the contrary there is no evidence that ethanol can be used to forecast any region of the field crops or cattle returns distributions

misery loves company equilibrium portfolios with heterogeneous consumption externalities the present article extends the arrow debreu portfolio model to consumption externalities it is assumed that each investor has a von neumann morgenstern utility that is a function of her own consumption and of the average consumption in the group to which she belongs individual degrees of risk aversion and conformism are heterogeneous within each group and between the different groups in the economy we show that under some conditions on the degree of conformism in the economy the optimal portfolio and consumption choices observed at equilibrium in each group with consumption externalities are equivalent to those that are optimal without any externality but with an adjusted degree of risk aversion if these conditions are not fulfilled groups have no representative agent and the demand for pure zero mean lotteries may be positive thereby showing that not all diversifiable risks are washed away at equilibrium we characterize the relationship between the distribution of conformism in the economy to the competitive allocation of risk and to the equity premium we provide conditions for the two fund separation property to hold

do food and oil prices co move abstract this paper studies co movements between world oil prices and global prices for corn soybean and wheat using copulas several copula models with different conditional dependence structures and time varying dependence parameters were considered empirical results for weekly data from january 1998 to april 2011 showed weak oil food dependence and no extreme market dependence between oil and food prices these results support the neutrality of agricultural commodity markets to the effects of changes in oil prices and non contagion between the crude oil and agricultural markets however dependence increased significantly in the last three years of the sampling period even though upper tail dependence remained insignificant indicating that food price spikes are not caused by positive extreme oil price changes these results have implications for policy design risk management and hedging strategies

conducting the international orchestra bank of england leadership under the classical gold standard abstract a large literature assigns to the bank of england a leadership role in the management of the classical gold standard this paper documents the exceptional behavior of the bank of england s discount rate in particular that it tended to lead discount rates abroad it then develops a game theoretic analysis of central bank interaction under the classical gold standard sterling s reserve currency status is shown to provide a rationale for stackelberg leadership by the bank of england contrary to popular notions however britain s foreign creditor status does not provide a basis for the bank of england s leadership strategy

origins of the federal reserve system international incentives and the domestic free rider problem from the civil war to 1914 the united states had one of the worst e nancial systems in the world the dominant institutional feature of the system was the absence of a central bank and its most salient performance characteristics were the recurrence of banking panics and severe seasonal interest rate e uctuations these e nancial problems were economically costly panics were accompanied by sharp declines in the money supply reduced economic activity and increased unemployment and business failures in 1913 congress created the federal reserve system to safeguard the nation from panics and smooth out interest rate seasonals in more general terms the federal reserve was established to provide the national public good of e nancial system stability in this study i explain how american society overcame the collective action problems that normally constrain the production of public goods to inadequate levels in other words the article is about the political effort that produced an infrastructural cornerstone of the modern u s economy in the face of incentives that should have left few people with sufficient motivation to pay for the improvement i bring to bear a joint products selective incentives argument to explain the voluntary collective action behind the federal reserveact 1 the lobbying effort was aboutsolving thepanic problem tobe sure but becausethisexpected benee t approximated a societywide public good it did not on its own motivate collective action instead the united states faced a second problem of e nancial organization before 1914 and it was this problem that created a private inducement to lobby for the federal reserve the structure of the domestic e nancial machinery contributed not only to instability at home but also to the near complete absence of the u s dollar in global e nancial affairs indeed the united states was the only major trading country whose currency did not function as an international currency before 1914 the new this article is a revision of a paper delivered at the 1996annual convention of the southern economic association washington d c 23 25 november i thank michael bordo marc busch william r clark benjamin j cohen barry eichengreen jeffry frieden william keech stephen krasner charles lipson jameslivingston louispauly georgeselgin bethsimmons richardtimberlake danielverdier eugene n white and two anonymous reviewers for very helpful comments 1 see olson 1965 and sandler 1992

food versus fuel what do prices tell us abstract sorting out the impacts of biofuels on global agricultural commodity prices is impossible without turning to data and distinguishing between the short run versus the long run impacts using time series prices on fuels and agricultural commodities the aim is to investigate the long run cointegration of these prices simultaneously with their multivariate short run interactions results indicate no direct long run price relations between fuel and agricultural commodity prices and limited if any direct short run relationships in terms of short run price movements sugar prices are influencing all the other agricultural commodity prices except rice with sugar the number one world input for ethanol results indicate increased ethanol production is potentially influencing short run agricultural commodity prices overall results support the effect of agricultural commodity prices as market signals which restore commodity markets to their equilibria after a demand or supply event shock

the evolution of hayek s thought on gold and monetary standards early in his career hayek viewed attempts to stabilize exchange rates by facilitating cooperation between central banks with respect to their demand for gold to be at odds with the fundamental mechanisms of the gold standard he opposed proposals by irving fisher gustav cassel and ralph hawtrey that promoted stabilization of demand for gold and price levels as a next best option hayek viewed the nations that refused to devalue their currency after monetary expansion during wartime as complicit in degrading the international gold standard in 1935 hayek s emphasis began to change his position sounding much like the arguments of cassel and hawtrey though he eventually gave up hope that the international gold standard would be reestablished his later work on money provides theoretical underpinnings for systems that would promote the same sort of stability and predictability that the classical gold standard had provided

world oil and agricultural commodity prices evidence from nonlinear causality abstract the increasing co movements between the world oil and agricultural commodity prices have renewed interest in determining price transmission from oil prices to those of agricultural commodities this study extends the literature on the oil agricultural commodity prices nexus which particularly concentrates on nonlinear causal relationships between the world oil and three key agricultural commodity prices corn soybeans and wheat to this end the linear causality approach of toda yamamoto and the nonparametric causality method of diks panchenko are applied to the weekly data spanning from 1994 to 2010 the linear causality analysis indicates that the oil prices and the agricultural commodity prices do not influence each other which supports evidence on the neutrality hypothesis in contrast the nonlinear causality analysis shows that i there are nonlinear feedbacks between the oil and the agricultural prices and ii there is a persistent unidirectional nonlinear causality running from the oil prices to the corn and to the soybeans prices the findings from the nonlinear causality analysis therefore provide clues for better understanding the recent dynamics of the agricultural commodity prices and some policy implications for policy makers farmers and global investors this study also suggests the directions for future studies

the economics of brazil s ethanol sugar markets mandates and tax exemptions sugarcane in brazil is processed into sugar and or ethanol often in flex plants that can switch between the two products we develop an economic model of flex plants export demands and two domestic fuel demand curves for a blend of ethanol with gasoline consumed by conventional cars and ethanol consumed only by flex cars we analyze the market impacts of the following policies the blend mandate fixing gasoline prices below world prices the high gasoline tax and a higher tax exemption for ethanol blended with gasoline because brazilian and u s ethanol prices have become linked a change in brazilian ethanol policy or a shock in world sugar markets can now impact u s ethanol and corn prices we show that in theory each policy analyzed has an ambiguous impact on ethanol and sugar prices empirically however a low gasoline tax and a high tax exemption for ethanol used in the fuel blend reduce ethanol and sugar prices this contradicts conventional wisdom overall we find that policy reforms implemented in 2010 offset the ethanol price increase by about 27 due to outward shifts in fuel transportation and sugar export demand curves and due to a reduced sugarcane supply caused by bad weather our model illustrates the importance of brazil s ethanol policies on world commodity markets it also provides insight into how the brazilian government can adjust policies to better control domestic inflation while minimizing impacts on investment

nonlinearities in the u s corn ethanol oil gasoline price system we use a smooth transition vector error correction model to assess price relationships within the u s ethanol industry monthly ethanol corn oil and gasoline prices from 1990 to 2008 are used in the analysis results indicate the existence of long run relationships among the prices analyzed strong links between energy and food prices are identified

dynamic impacts of high oil prices on the bioethanol and feedstock markets this study investigates the impacts of high international oil prices on the bioethanol and corn markets in the us between 2007 and 2008 the prices of major grain crops had increased sharply reflecting the rise in international oil prices these dual price shocks had caused substantial harm to the global economy employing a structural vector auto regression model svar we analyze how increases in international oil prices could impact the prices of and demand for corn which is used as a major bioethanol feedstock in the us the results indicate that an increase in the oil price would increase bioethanol demand for corn and corn prices in the short run and that corn prices would stabilize in the long run as corn exports and feedstock demand for corn decline consequently policies supporting biofuels should encourage the use of bioethanol co products for feed and the development of marginal land to mitigate increases in the feedstock price

how market efficiency and the theory of storage link corn and ethanol markets this article uses the theories of market efficiency and supply of storage to develop a conceptual link between the corn and ethanol markets and explores statistical evidence for the link we propose that a long run no profit condition is established in distant futures markets for ethanol corn and natural gas and then use the theory of storage to define an inter temporal equilibrium among these prices the relationship shows that under certain conditions future price expectations will influence nearby futures prices and that a short term relationship between input and output prices will exist we demonstrate validity of the theory using a structural price model and then by means of time series techniques

assessing the effect of oil price on world food prices application of principal component analysis the objective of this paper is to investigate the co movement of food prices and the macroeconomic index especially the oil price by principal component analysis to further understand the influence of the macroeconomic index on food prices we examined the food prices of seven major products eggs meat milk oilseeds rice sugar and wheat the macroeconomic variables studied were crude oil prices consumer price indexes food production indexes and gdp around the world between 1961 and 2005 we use the scree test and the proportion of variance method for determining the optimal number of common factors the correlation coefficient between the extracted principal component and the macroeconomic index varies between 0 87 for the world gdp and 0 36 for the consumer price index we find the food production index has the greatest influence on the macroeconomic index and that the oil price index has an influence on the food production index consequently crude oil prices have an indirect effect on food prices

bank rate policy under the interwar gold standard a dynamic probit model the classical gold standard occupies an almost mystical position in the literature of international finance in popular accounts the gold standard is portrayed as a remarkably durable and efficient mechanism for achieving price and exchange rate stability and for relieving balance of payments pressures the system s resilience is attributed to the willingness of nationa monetary authorities to refrain from impeding the international adjustment process when central banks intervened in financial markets it is said they did so mechanically obeying rules of the game which dictated that they reinforce the impact on domestic money and credit of changing balance of payments conditions succeeding generations of economists and historians have sought to qualify this popular view the recent contributions of bordo i98i and cooper i982 make a critical assessment of extravagant claims concerning price and exchange rate stability under the classical gold standard other authors have extended the research of bloomfield i 959 ford i962 and triffin i964 who emphasised the special conditions that permitted the classical gold standard s smooth operation and cast doubt on the tendency of national monetary authorities to adhere faithfully to rules of the game all too often scant mention is made of the interwar gold standard for it is not evident how interwar experience fits into either view certain facts are clear it is clear that the interwar standard was far from durable britain s resumption of gold payments in i925 usually is taken to mark the gold standard s resurrection just as her devaluation a mere 6 years later is taken as its demise in the interim many of the major participants suffered serious balance of payments pressures that threatened to render their exchange rates indefensible the system was anything but conducive to stability it precluded neither price nor income fluctuations as the great depression dramatically illustrated numerous explanations have been advanced for the interwar gold standard s

oil price agricultural commodity prices and the dollar a panel cointegration and causality analysis abstract this study examines the dynamic relationship between world oil prices and twenty four world agricultural commodity prices accounting for changes in the relative strength of us dollar in a panel setting we employ panel cointegration and granger causality methods for a panel of twenty four agricultural products based on monthly prices ranging from january 1980 to february 2010 the empirical results provide strong evidence on the impact of world oil price changes on agricultural commodity prices contrary to the findings of many studies in the literature that report neutrality of agricultural prices to oil price changes we find strong support for the role of world oil prices on prices of several agricultural commodities the positive impact of a weak dollar on agricultural prices is also confirmed

exogenous impacts on the links between energy and agricultural commodity markets abstract the main purpose of this paper is to identify the effects of exogenous factors which have been somewhat controversial on the price links between the energy and agricultural commodity markets our study differs from other studies by employing multivariate normal mixture models to capture the structural properties of the price dependencies in the underlying states this paper investigates price dependencies from both quantitative and structural perspectives by analyzing the overall dependencies and structural heterogeneity in the empirical results we conclude that the global financial crisis is the most influential shock on the price links between energy and agricultural commodities because price links are vulnerable to financial shocks our results also suggest introducing state based analysis to risk management and portfolio diversification across the energy and agriculture markets during times of turmoil

assessing the impact of us ethanol on fossil fuel markets a structural var approach abstract despite the growing importance of biofuels the effect of biofuels on fossil fuel markets is not fully understood we develop a joint structural vector auto regression var model of the global crude oil us gasoline and us ethanol markets to examine whether the us ethanol market has had any impact on global oil markets the structural var approach provides a unique method for decomposing price and quantity data into demand and supply shocks allowing us to estimate the distinct dynamic effects of ethanol demand and supply shocks on the real prices of crude oil and us gasoline ethanol demand in the us is driven mainly by government support in the form of tax credits and blending mandates shocks to ethanol demand therefore reflect changes in policy more than any other factor in contrast ethanol supply shocks are driven by changes in feedstock prices a principle finding is that a policy driven ethanol demand expansion causes a statistically significant decline in real crude oil prices while an ethanol supply expansion does not have a statistically significant impact on real oil prices this suggests that even though us ethanol market is small the influence of us biofuels policy on the crude oil market is pervasive we also show that ethanol demand shocks are more important than ethanol supply shocks in explaining the fluctuation of real prices of crude oil and us gasoline

the effect of global oil price shocks on china s agricultural commodities abstract this paper studied the effect of global oil price shocks on agricultural commodities in china including strong wheat corn soybean bean pulp cotton and natural rubber we regarded oil price volatility process as a combination of continuous process and jump process we not only separated oil price shocks into positive and negative categories to identify different effects on agricultural commodities in continuous process but also investigated how jump behavior influenced these agricultural commodities we found that the oil price was characterized by volatility clustering and jump behavior at the same time oil price shocks had different effects on agricultural commodities in addition the shocks on most agricultural commodities were asymmetric only natural rubber was under influence of the jump intensity of the oil price in contrast to strong wheat corn soybean bean pulp and cotton

the impact of oecd biofuels policies on developing countries oecd countries biofuels policies derived from energy and environmental legislation and activated by high oil prices were the primary cause of not only the sudden spike in grain and oilseed prices in 2007 2008 but also of the ensuing price volatility even though developing countries have a comparative advantage in biofuels production they were shut out of rich countries biofuel markets by trade discriminating biofuels policies developing countries would not have been able to take full advantage of the price spike in the short run anyway given the low supply elasticities and the long time required for biofuel production to come online unlike for corn ethanol the controversy over the right price of food is misplaced and policy makers should instead focus on improving biofuels policies which like their counterpart agricultural policies in previous decades have damaged the welfare of developing countries

non parametric and parametric modeling of biodiesel sunflower oil and crude oil price relationships abstract multivariate local linear regression and parametric error correction models are applied to assess price linkages and price transmission patterns between food and energy prices in spain weekly biodiesel sunflower and crude oil prices observed from november 2006 to october 2010 are used in the empirical analysis results suggest the existence of a long run equilibrium relationship between the three prices studied biodiesel is the only variable that adjusts to deviations from this long run relationship local linear regression techniques show that the speed of adjustment of biodiesel prices is faster when biodiesel is relatively cheap than when it is expensive energy prices are also found to influence sunflower oil prices through short run price dynamics

world oil prices and agricultural commodity prices evidence from an emerging market abstract oil prices are thought to have direct effect on agricultural prices followed by an indirect effect through the exchange rate this paper examines the short and long run interdependence between world oil prices lira dollar exchange rate and individual agricultural commodity prices wheat maize cotton soybeans and sunflower in turkey to this end the toda yamamoto causality approach and generalized impulse response analysis for identification of the long and short run interrelationships are applied to the monthly data spanning from january 1994 to march 2010 the impulse response analysis suggests the turkish agricultural prices do not significantly react to oil price and exchange rate shocks in the short run the long run causality analysis reveals that the changes in oil prices and appreciation depreciation of the turkish lira are not transmitted to agricultural commodity prices in turkey hence our results support neutrality of agricultural commodity markets in turkey to both direct and indirect effects of oil price changes

the effect of biodiesel policies on world biodiesel and oilseed prices a theoretical and empirical model is developed to analyze the effect of a biodiesel mandate a tax exemption tax credit and an exogenous diesel price shock on world soybean and canola markets the jointness in crushing oil and meal from the oilseed reduces the size of the link between biodiesel and oilseed prices a diesel price shock with a mandate results in a smaller change in oilseed prices compared with a tax exemption higher diesel prices increase biodiesel prices under a tax exemption but lower them with a blend mandate when both canola and soybeans are used to produce biodiesel an increase in the diesel price leads to higher canola prices but the effect on soybean prices is ambiguous and depends on relative elasticities of meal demand and canola supply because canola produces more oil than soybeans