The global agricultural economy is changing. Commodity prices are declining, and producers increasingly supply complex value chains. There is growing interest in how farmers can benefit from emerging market opportunities. Farmers are encouraged to produce high value crops and engage in value-adding activities such as agro-processing. Farmer organization and collective action are often seen as key factors in enhancing farmers' access to markets. Often too little attention is directed at a) the most appropriate types of organization, b) whether the public and/or private sector is best placed to support their formation, and c) the conditions necessary for ensuring their economic viability. This paper reports on research in Mexico and Central America that explored these issues for commodity maize and high value vegetables respectively. The benefits of farmer organization are more evident in the vegetable sector characterized by high transaction costs associated with market access. The research suggests that farmer organizations established by and directly linked to supermarkets may be more economically sustainable as opposed to organizations supported by non-governmental organizations. However, the most representative vegetable producer organizations in both Honduras and El Salvador include fewer than 5 percent of total horticultural producers. This is due to producer organizations' limited business skills and non-replicable organizational models for linking producers to markets. There is less incentive for maize farmers to organize themselves to access output markets as the transaction costs associated with market access are relatively low: there are so many buyers and sellers that farmer organizations would have little impact on, for example, prices. The benefits of farmer organization are clearer when it comes to accessing credit, seed, and fertilizer. Farmer organization is a critical factor in making markets work for the poor particularly in high value products, but the role and timing of the substantial public and private investment needed to establish and maintain these organizations is poorly understood.

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SUMMARYInnovation platforms are fast becoming part of the mantra of agricultural research for development projects and programmes. Their basic tenet is that stakeholders depend on one another to achieve agricultural development outcomes, and hence need a space where they can learn, negotiate and coordinate to overcome challenges and capture opportunities through a facilitated innovation process. Although much has been written on how to implement and facilitate innovation platforms efficiently, few studies support ex-ante appraisal of when and for what purpose innovation platforms provide an appropriate mechanism for achieving development outcomes, and what kinds of human and financial resource investments and enabling environments are required. Without these insights, innovation platforms run the risk of being promoted as a panacea for all problems in the agricultural sector. This study makes clear that not all constraints will require innovation platforms and, if there is a simpler and cheaper ‡ Corresponding author.

Both food safety and dietary behaviors are major contributors to the global burden of disease, especially in rapidly urbanising environments. The impact that food safety concerns have on dietary behaviors in low-and middle-income countries (LMICs) is insufficiently documented. Therefore, we examined whether food safety concerns influence consumer behaviors/diets in LMICs. A systematic review identified 46 relevant studies from 20 LMICs for inclusion. A socio-ecological food environment framework was used to map food safety factors that influence consumer behaviors (food acquisition/purchase, eating out of home, food preparation/storage) and diets (consumption of nutrient rich/poor foods). Several studies (n = 11) reported that despite food safety concerns, consumers could not always ensure that they consumed safe food; barriers were affordability, accessibility and appeal. Key concerns included fear of pesticides, fertilizers, hygiene in/around food outlets, unhygienic vendor practices and household storage/preparation methods. These concerns may reduce consumption of animal sourced food and fresh fruit and vegetables; and increase consumption of starchy staples and processed/ packaged foods. Policies such as upgrading urban market infrastructure to enhance food safety, accompanied by nutrition and hygiene education, could lead to increased accessibility, affordability and appeal of safe, nutrientrich foods. Thus, reducing the appeal of packaged/processed food as a means to mitigate food safety risk; thereby contributing to preventing foodborne disease and multiple forms of malnutrition.

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This paper sets out to analyze social entrepreneurship in the Central America Learning Alliance, in the context of recent literature on entrepreneurship and learning. Drawing on a recent and rapidly growing literature that describes entrepreneurship as a process that is inherently dynamic and experimental, with learning as a core component, we focus on social entrepreneurship in development as a catalyst of social transformation. A case study of a multi-stakeholder network focused on promoting processes of rural enterprise development, known as the Central America Learning Alliance, is used to illustrate social entrepreneurship in the context of the framework for innovation and learning that is developed in the first part of the paper. We conclude that the key concepts underlying entrepreneurial learning have important implications for social entrepreneurship in the context of building dynamic livelihoods for the poor of Central America.