Distance and Border Effects on Price Transmission: A Meta‐analysis

Using price transmission estimates for 1,189 cereal market pairs extracted from 57 published studies in a meta‐analysis, we examine whether geographic distance and separation by an international border affects the strength and speed of price transmission. Our findings indicate that a border reduces the likelihood that two cereal prices will be cointegrated by 23%, and each additional 1,000 km of distance reduces the probability of cointegration by 7%. The speed of price transmission is on average 13 percentage points per period faster between prices that are located within the same country compared with cross‐border price pairs. Our meta‐analysis also indicates that increasing distance strongly reduces the speed of price transmission on domestic markets, but that the effect of distance on the speed of transmission is considerably weaker for trade over longer international distances. Overall, these results confirm expectations and complement the findings in the trade literature that borders and distance affect trade flows and price dispersion.     

Food Industry Firms' Economic Incentives to Provide Nutritional Information to the Market: European Breakfast Cereals,Snacks, and Soft Drinks Industries

Information asymmetries between producers and consumers exist with respect to nutritional characteristics of foods and beverages. This article aims to analyze firms' methods to supply nutritional information, focusing on 3 specific food industries: breakfast cereals, snacks, and soft drinks. A theoretical model is developed and tested empirically on European firm-level data obtained from company websites. Firms' incentives to provide nutritional information are positively related to their products' healthfulness, to firm size, and to firms' degree of international orientation. These insights may have important implications for the design of regulations to increase efficiency in the supply of nutritional information to consumers.     

谷物中重金属离子迁移及其污染消控研究进展

针对谷物中重金属不同时间和空间的含量及分布特征,重金属的来源解析和主要形态的分析,以及在种植、加工和食用等过程中造成重金属的污染、迁移和消降等问题进行了科学分析与综述.并从土壤改良、作物品种改良与耕作改革到谷物的收、加、储及食用等一条龙式的全程消控方法及策略等作了详尽讨论与分析.最后就谷物中重金属污染的研究进行了简要的展望与建议.     

The dis-incentive effects of food aid and agricultural policies on local land allocation in developing countries: The case of Malawi

Food aid and other agricultural policies can create incentives/disincentives in local agricultural production. This paper provides empirical evidence on the disincentive effects of both food aid and some agricultural policies in Malawi. In contrast to previous studies, this paper analyses the impact of food aid on the proportion of land allocated to cereal crops and the interplay of both food aid and other agricultural policies in creating disincentive effects. Data were analysed using the logit transformation regression. It was found that, in addition to the disincentive effects of food aid, agricultural policies including price controls and sustained reliance on imported cereals were also undermining incentives to sustain local agricultural production. Therefore, both food aid and agricultural price policies need to be aligned to farmers' incentives to optimcally allocate land to food production.