Development projects on interventions to reduce postharvest losses (PHL) are often implemented largely independently of the specific context and without sufficient adaptation to the needs of people who are supposed to use them. An approach is needed for the design and implementation of specific, locally owned interventions in development projects. Our approach is based on Participatory Development and includes Living Lab and World Cafés. We applied the approach in a case study on reducing PHL in tomato value chains in Nigeria. The approach consists of nine steps. After scoping the sector, selected value chain stakeholders (case: farmers, transporters, traders, retailers) were gathered in Living Lab workshops. In the workshop, participants analyzed the product, information, and monetary flows in their own value chain, identified causes for PHL, and selected potential interventions to reduce these (case: plastic crates instead of raffia baskets to transport tomatoes). Selected interventions were implemented, tested, and monitored in pilot projects with the workshop participants. This was followed by an evaluation workshop. At the end of the case study, 89% of participants bought crates to keep using them in their value chain. Our approach resulted in context-specific, locally owned interventions to reduce PHL in the case study on tomato value chains in Nigeria. Its application in other countries, commodities, or interventions is needed to determine the effectiveness of the approach in a broader scope.

From being a smallholder-based, food-producing country covering its basic needs, Iraq and the Kurdistan Region in Iraq (KRI) have become major importers of food. The sustainability of the agricultural sector has been systematically undermined by conflict, neglect, and mismanagement, as a result of which the capacity of its farmers to feed the population declined. Even though local policymakers, the international community, and the international organisations emphasise the potential of agriculture for food production, job creation, and income generation, they also tend to consider the current food system problematic because of an alleged low productivity that they relate to the existing smallholder system. For them, such system poses a lack of competences and skills of farmers, and a subsistence production orientation. This approach culminated in a policy-making process that offered land and water for capital investments, and thus neglecting the potentials and competencies of (small-scale) farmers. The concomitant neglect of the human dimension of agriculture, namely the family farm, is essentially the continuation of an economically and ecologically high-risk approach that may lead to a further decline of the sector’s ability to produce food for the local market.

Human diets and their associated environmental impacts differ across segments of the population. There is evidence that consumer choices of food intake can also affect the overall environmental impacts of a food system. This paper analyzes the environmental impact of diets and food choices across a rural–urban transect in Northern Vietnam by using mixed survey data from 619 adult respondents. The average greenhouse gas emissions (GHGE) resulting from producing the daily food intake of adults in the urban and peri-urban districts were similar, while the average in the rural district was lower. Although starchy staples contributed the most to energy intake, pork and beef were the largest contributors to GHGE. Metrics of blue water use were higher for diets of males than those of females in all three districts. Interestingly, the difference in mean diet diversity score between urban and rural households was significant, and females’ diets were more diverse than those of males. As expected, urban households were more likely to buy food, while rural households often produced their own foods. Urban households reported prioritizing personal health and the natural content of food and would increase seafood and fruits if their income were to increase. In rural regions, interventions aimed at reducing undernutrition should address improving diet quality without significant increases to diet-related environmental impacts.

Most policies and incentives that aim to enable smallholder farmers towards the intensification of their agri-food production systems focus on supply-side strategies, such as training, technical assistance or credit services. Far less attention is usually given to demand-side drivers, such as the role of midstream value chain actors supporting smallholder’s investments in primary production. This explorative paper provides new insights on the value addition in the production vs. the midstream segments of agri-food value chains. It focusses attention on the influence of value chain integration on smallholders’ production and investment opportunities, and the implications for the structure of primary production. We use data from several value chains in sub-Saharan Africa to illustrate how farmers link to commercial midstream actors are able to enhance resource productivity, efficiency and profitability. In addition, we show that a larger role of the midstream in value added creation is associated with a more equal farm size distribution.

Development programmes are increasingly supporting inclusive value chains (VC), in which resource-poor farmers are included in commercially viable VC opportunities. Strengthening social capital elements between VC actors is key to improve the farmers’ livelihood. This article presents a novel impact evaluation method called the VC-Lab to assess the effectiveness of such development programmes, including long-term effects. The method is based on a Public Private Partnership (PPP) in the sorghum VC in Kenya. It consists of different components: (1) a VC analysis; (2) games to assess risk attitude and trust relationships between VC actors; and (3) an agent-based model (ABM) to assess the long-term impact. ABM parameter settings are based on the outcomes of the VC analysis and game results. The level of trust of participating farmers delivering to the participating trader is significantly higher than the level of trust of non-participating farmers in their trader. ABM simulations indicate that in the long run the PPP will lead to higher levels of trust and increased income, whereby training is the key intervention mechanisms. The VC-lab proves to be a valuable evaluation tool. Application of the VC-lab to other VCs, to other commodities and in other countries is needed to test wider applicability of the methodology.