共查询到20条相似文献，搜索用时 15 毫秒
1.
Dragan Miljkovic 《Agricultural Economics》2005,33(1):21-27
This article examines the notion of farm size inequality expressed as sales inequality in the United States. The farm size index (FSI) is developed as a measure of farm size inequality. FSIs are calculated for the farming sector in all 50 states and large variation in farm size across the states and over time is determined. The largest FSIs are calculated for a number of Southern, Southwestern, and Pacific states. Increasing FSIs over time are observed in all states as well. The spatial and temporal (between 1987 and 1997) differences in FSIs are explained by running a pooled, cross‐sectional time‐series model. The most influential variables accounting for the differences have to do with the ownership structure, where a larger presence of individual and family farms relative to corporate farms and cooperatives leads to a lower degree of farm size inequality. Also, states and regions having relatively larger number of farms owned by minorities have higher FSIs. Shrinking opportunities in the agricultural sector relative to the rest of the economy, primarily services, are reflected in a declining share of agricultural sector state income in total gross state product (GSP). This in turn leads to an increase in the farming sector's FSI suggesting that only larger, more profitable operations are the likely candidates to pursue farming activities. Finally, grains farming regions have all lower degree of farm size inequality than livestock or fruits and vegetables regions. Profitable grains farming requires relatively large farm size and equipment investments, which leads to a relatively homogeneous structure of grains farms. A larger variation in the size of profitable farm operations is possible in fruits and vegetables and livestock. This leads to the existence of a large number of very small but still sustainable farms, and a relatively small number of large farms that capture most of market sales share. 相似文献
2.
Market power and competition policy in food supply chains has emerged as an important economic issue in economics, and a highly sensitive item on the policy agenda. Consolidation is taking place in the food industry, both in high‐income countries and in emerging economies, but the impact of concentration in global food chains on efficiency and rent distribution is more nuanced and complex than often claimed. We review the literature and extend it by developing a model which explicitly takes into account market imperfections and contract enforcement problems in supply chains. Increased competition benefits farms by improving contract conditions, but contract enforcement becomes more complicated. 相似文献
3.
Joe L. Parcell Jason R.V. Franken Maria Cox David J. Patterson Richard F. Randle 《Agricultural Economics》2010,41(5):463-470
This research reports buyers’ perceptions of and willingness‐to‐pay for replacement heifers produced through a rigorous, third‐party verified production protocol. Survey respondents attended and registered to purchase heifers at sanctioned Missouri Show‐Me‐Select Replacement Heifer Program® sales between 1997 and 2002. Responses indicate that pen uniformity, artificially inseminated to calving ease bull, synchronized calving, and heifer size are perceived as important, and their willingness‐to‐pay for these characteristics is economically significant. Though prior research suggests willingness‐to‐pay estimates particularly for inexperienced consumers may be biased, we find little difference between inexperienced and experienced buyers and also little difference from hedonic estimates of heifer characteristics’ value. 相似文献
4.
This article uses an equilibrium displacement model (EDM) to assess the impact of a change in trade policy in the Korean infant formula market that is assumed to be oligopolistic. Domestic oligopolists compete in a market for a homogenous good with importing firms who enjoy the same level of market power as the domestic producers. Within an EDM framework, we investigate how the market adjusts to a new equilibrium in response to an external policy shock that improves access to foreign goods. Our empirical work consists of two steps. We first econometrically estimate the market demand elasticity and market power parameter. Then, using these estimates, we simulate our EDM model to assess the distributional effects of tariff cuts and other changes in marginal cost. Simulation results show that, with a lower market price and increased consumption, the change in consumer surplus resulting from tariff reduction is unambiguously positive, but that the change in social welfare can be in either direction, depending on who receives market rents associated with imports. When importing firms are domestic, the domestic welfare change is definitely positive. However, in the case of foreign importing firms, the direction of the welfare change crucially depends on the demand elasticity. 相似文献
5.
Zsombor Pall Oleksandr Perekhozhuk Thomas Glauben Sören Prehn Ramona Teuber 《Agricultural Economics》2014,45(3):381-391
Traditionally, the international wheat market has been considered a good example of a market with perfect competition. Yet, several articles provide evidence of imperfect competition and price discrimination in the wheat trade. However, these studies focused on traditional high‐quality wheat exporters such as Canada and the United States. In contrast, this article investigates whether Russian wheat exporters exercise market power in eight selected importing countries using the residual demand elasticity (RDE) model. The article makes two major contributions. First, it focuses on a nontraditional exporter, who exports mainly wheat of mediocre quality to low‐ and middle‐income countries. Second, the RDE model is estimated for the first time using a nonlinear estimator, the instrumental variable Poisson pseudo‐maximum likelihood estimator. This is important because the double logarithmic functional form can provide biased results in the presence of heteroskedasticity. The results indicate that Russian wheat exporters can exercise market power in only a few markets, while they are price takers in the majority of importing countries. 相似文献
6.
In this study, consumers’ willingness to pay for farming, slaughter and processing, distribution and marketing, and government certification information was investigated in Wuxi, Jiangsu Province, China using an experimental auction and real choice experiment based on incentive compatibility of the nonhypothetical elicitation method. No significant differences in consumers’ willingness to pay were revealed by the experimental auction and real choice experiment on the whole, and results from both nonhypothetical experimental methods demonstrated that consumers were willing to pay certain premiums for all four types of traceability information and had the highest willingness to pay for government certification information. These results indicate that consumers trust in pork safety protection under governmental supervision. Moreover, it was found that government certification information played a significant role in improving consumer utility, demonstrating that consumers paid close attention to safety risks in farming. Therefore, this study predicts that the introduction of governmental supervision into the pork traceability system and establishment of a system for collecting traceability information starting from the stage of pig farming will play important roles in meeting consumer demands for pork quality and safety, as well as promoting the development of traceable food policies. 相似文献
7.
Margherita Scoppola 《Journal of Agricultural Economics》2010,61(3):584-604
Several proposals for liberalising agricultural tariff rate quotas (TRQs) have been proposed within the WTO Doha Development Round. The literature suggests that the effectiveness of liberalisation depends upon which of the three elements of a TRQ constrains imports. Most contributions assume perfect competition. This article uses an oligopoly two‐stage capacity constrained model, in which the mode of competition is endogenous, to investigate the impact of different liberalisation options of TRQs, that is, the reduction in the in‐quota and out‐of‐quota tariffs and the expansion of the quota. This article shows that consideration of the nature of competition between traders may provide unconventional conclusions about the effectiveness of the various TRQ liberalisation options; furthermore, the article shows how an increase in the number of rivals, under certain circumstances, may be more effective in increasing trade than reducing tariffs. 相似文献
8.
In order to better understand how cross-border price shocks are transmitted to domestic food markets, we augment an error correction model with a network approach and apply it to Tanzania. We show the following. First, Dar es Salaam, Tanzania's largest city and port, is not a significant influence. Second, demand shocks emanate primarily from border markets that may serve as conduits for informal trade. Third, market linkages differ considerably across seasons and commodities. Fourth, prices in areas with high production potential are especially sensitive to systemic shocks. More broadly, we show that a network approach in conjunction with time series analysis can enhance our understanding of the origins and channels through which shocks are transmitted to food markets. 相似文献
9.
William M. Liefert 《Journal of Agricultural Economics》2011,62(1):119-136
This article develops a method for decomposing changes in agricultural producer prices. The method builds on a procedure used by the World Bank, with the main variables in the decomposition being trade prices, exchange rates and trade policies. We expand on the World Bank decomposition procedure by broadening the analysis of policy effects, adding the effect from incomplete transmission of changes in trade prices and exchange rates to producer prices, and handling the effect on prices from interactions between variables as they change simultaneously. Decomposition results are presented for various commodities for the major emerging markets of Brazil, China and South Africa. 相似文献
10.
Given the leading role of private label brands in the fluid milk market, it is of special interest to focus on possible differences in farm‐retail price transmission between private label and branded milk as well as the causes of heterogeneity. This article examines the heterogeneous effects of private label and branded products on price transmission in the fluid milk market using a panel threshold asymmetric error correction model. Results indicate that upward retail‐price adjustment is faster than the downward price adjustment for both private label and branded milk. The speed of adjustment of private label products is significantly faster than branded products in three different price regimes. We further investigate the reasons of heterogeneity in farm‐retail price transmission of private label milk. We find that both retailer market power and state pricing regulations contribute to the heterogeneity in asymmetric price transmission. Higher retailer market power causes retail prices of private label milk to rise faster and to fall slower. The existence of a state pricing regulation slows down the adjustment speed of retail prices of private labels back to the long‐run equilibrium, regardless of whether the retail price is low or high. 相似文献
11.
Antonio Cioffi Fabio Gaetano Santeramo Cosimo Damiano Vitale 《Agricultural Economics》2011,42(3):405-418
The article assesses the stabilization effects of the EU import regime for fresh fruit and vegetables based on the entry price system (EPS). The analysis is carried out on the EU prices of tomatoes and lemons and those of imports from some of the main competing countries on the EU domestic markets: Morocco, Argentina, and Turkey. It is based on the estimation of a threshold vector autoregressive econometric model that is shown capable of taking the workings of the import regime into account. The model shows that prices behave differently when import prices are above/below the trigger entry price. This article allowed to highlight the cases for which the isolation effect of EPS seems reached and the resulting stabilization effects. 相似文献
12.
Pierre Mérel 《Journal of Agricultural Economics》2011,62(3):585-603
This article explores the economic efficiency of a horizontally and vertically coordinated industry where upstream producers are atomised, but downstream processors are few, explicitly considering participation incentives and allowing the coordinated industry to exert market power towards buyers. The model offers insight into the probable social impacts of the government‐sanctioned supply control scheme in place in the French Comté cheese market, suggesting it falls short of constituting a Pareto‐improvement compared with a laissez‐faire situation. More generally, our theoretical model provides guidance to identify instances where encouraging industry coordination may be socially desirable. We formally introduce the concept of ‘seller‐equivalent degree of overall market power’ of the separated industry, a market characteristic comprised of measurable or inferable parameters, the value of which is shown to determine the potential for Pareto improvements through industry integration. 相似文献
13.
Lenis Saweda O. Liverpool‐Tasie 《Agricultural Economics》2014,45(4):393-407
Government distribution of subsidized fertilizer in Sub‐Saharan Africa is often characterized by cumbersome administrative processes and diversion of the product from the proclaimed beneficiaries. This study uses propensity score matching techniques to analyze an input voucher program in Nigeria that was meant to demonstrate an alternative and more efficient distribution mechanism for subsidized fertilizer. We find that participants in the 2009 voucher program received more bags of subsidized fertilizer than nonparticipants and also paid significantly lower prices compared to those who purchased directly from the market. On average, however, participating in the voucher program did not improve the timeliness of fertilizer receipt or the quality of the product. Where statistically significant, participating in the program increased the likelihood that the product was received late and that some complaint about the product's quality was made. As many developing countries; particularly in Sub‐Saharan Africa adopt the use of input vouchers or scale up already existing programs, this study demonstrates when the distribution of subsidized fertilizer via vouchers improves farmers’ timely access to good and more affordable fertilizer. It highlights some key issues to be considered in order to expand the dimensions of success of well‐targeted input voucher programs 相似文献
14.
The article explores the possibility of insuring the price risks of wheat and maize imports of low‐income food‐deficit countries (LIFDCs). Optimal strategies for an importing agent, who hedges with futures and options are derived, based on the objective of minimizing the unpredictability of import bills. Ex post simulations for a set of LIFDCs are run on wheat and maize imports hedged with futures and options in the Chicago Board of Trade, to explore the extent to which hedging reduces the unpredictability in import bills. Simulations encompass both periods of normal price behavior, as well as the period of global upheaval that occurred in 2007 and 2008. Results show that hedging with futures alone affords agents considerable opportunities for reducing import cost unpredictability, and the same holds with options, albeit, to a lesser extent. However, during the recent price spike of 2007–2008, hedging with options would have increased the unpredictability of some countries’ maize import bills, due to the combination of erratic import patterns and pronounced market uncertainty. 相似文献
15.
John Bovay 《Agricultural Economics》2017,48(6):793-803
In 2007, leading members of the U.S. fresh‐tomato industry responded to pressure from the U.S. Food and Drug Administration regarding the industry's long history of poor food‐safety outcomes and adopted a set of standards for production practices related to food safety at all levels of the fresh‐tomato supply chain. Adherence to these standards was required under a federal marketing order that applied to essentially all tomatoes grown in Florida. The California Tomato Farmers cooperative, whose members produced the vast majority of fresh tomatoes grown in California, also required that its members adopt these standards. The collective food‐safety standards for fresh tomatoes closely resemble the requirements of the U.S. Food Safety Modernization Act (FSMA) Produce Safety Rule, so the collective adoption of these standards provides an excellent case study to illustrate the possible effects of FSMA implementation on demand. I assess the hypothesis that demand for tomatoes from Florida and California increased following the adoption of standards for food‐safety practices by growers in those states, relative to demand for tomatoes from other regions. My analysis demonstrates essentially no evidence that demand for fresh tomatoes responded positively to the implementation of collective food‐safety practices. 相似文献
16.
New institutions for governing the agri-food industry 总被引：3，自引：0，他引：3
17.
In this article, we evaluate the role of market power by retailers within the supply chain of Parmigiano Reggiano (PR) and Grana Padano (GP), the two most famous Italian quality cheeses. Market power is analysed in the context of a dynamic imperfect competition model of the supply chain, in which retailers are allowed to exert market power both downstream and upstream. We jointly estimate market‐power parameters together with supply and demand elasticities, by means of a structural system of demand, supply and price‐transmission equations, estimated using the generalised method of moments. We find evidence of downstream market power by retailers (toward final consumers) for PR and GP, but no evidence of upstream market power (toward processors/ripeners). These results may be explained by the structure of the supply chain and by the peculiar characteristics of the two cheeses. 相似文献
18.
This paper examines the relationships among maize prices for four countries to determine if newly emerging exporters, Brazil and Ukraine, influence the international price of maize. Our work focuses on each market's participation in the price discovery process rather than trying to determine a price leader. We find that the United States plays the largest role in price discovery, followed by Argentina, Brazil, and Ukraine. We also search for export thresholds and find that Ukraine's contribution to price discovery rises slightly when an export threshold of 2.3 million tons is reached. No export thresholds were found for Brazil. Export thresholds for Argentina were found but only have a minor impact on price relationships. We also found that price relationships vary considerably across seasons of the year. 相似文献
19.
Svetlana Edmeades Daniel J. Phaneuf Melinda Smale Mitch Renkow 《Journal of Agricultural Economics》2008,59(2):329-349
We propose an approach to model the derived demand for crop varieties among semi‐subsistence farmers in a developing economy, and apply it to smallholder banana producers in Uganda. We model variety planting decisions as being composed of an extensive margin decision to grow a subset of locally available varieties (variety choice); and an intensive margin decision about the scale or extent of variety cultivation per farm (variety demand). We estimate variety demand equations using a more complete representation of the choice set upon which observed planting decisions are made. Computed elasticities of variety demand with respect to variety attributes indicate that the relative importance of consumption and production attributes varies by location and proximity to markets, from which we draw implications for the social and economic impact of crop improvement. The approach that we propose has broad appeal for analysing adoption decisions for modern or traditional varieties of both major and minor crops in developing countries. 相似文献
20.
Pesticide spraying by farmers has an adverse impact on their health. However, in studies to date examining farmers’ exposure to pesticides, the costs of ill health and their determinants have been based on information provided by farmers themselves. Some doubt has therefore been cast on the reliability of these estimates. In this study, we address this by conducting surveys among two groups of farmers who use pesticides on a regular basis. The first group is made up of farmers who perceive that their ill health is due to exposure to pesticides and have obtained at least some form of treatment (described in this article as the ‘general farmer group’). The second group is composed of farmers whose ill health has been diagnosed by doctors and who have been treated in hospital for exposure to pesticides (described here as the ‘hospitalised farmer group’). Cost comparisons are made between the two groups of farmers. Regression analysis of the determinants of health costs show that the most important determinants of medical costs for both samples are the defensive expenditure, the quantity of pesticides used per acre per month, frequency of pesticide use and number of pesticides used per hour per day. The results have important policy implications. 相似文献