Food Security最新文献

Traditional food markets in lower-income countries are constructed through the interactions of their participants: those who sell food and those who buy it. Their joint actions and motivations interact to determine what is sold, to whom, and at which price; these actions are shaped by interpersonal relationships and cultural norms. Understanding these dynamics is useful for crafting equitable and impactful policies and program interventions that leverage, rather than oppose, market actors’ initial motivations. This paper examines this process of “making a market” through a case study of vendors and consumers in Birnin Kebbi, Nigeria. It answers four interrelated research questions through a series of in-depth interviews with consumers (n = 47) and vendors (n = 37) using methods drawn from focused ethnography. The results demonstrate that market transactions are influenced by a complex interaction of vendors’ norms on competition and collaboration, consumers’ needs for credit amid unpredictable prices and restrictive gender norms, and a “moral economy” that appears to guide market actors’ behavior. Based on this, it is suggested that the conceptualization of which characteristics shape consumer choices within food environments should be broadened to include factors such as credit access and bargaining ability, and the trusted interpersonal relationships that enable them.

The advent of microcredit programmes in sub-Saharan Africa provides opportunities for rural households to acquire agricultural inputs and consumer goods. This study analysed gender differences in investment behaviour and repayment performance using a unique dataset—the complete client database (21,386 clients) of a microcredit programme operating in Western Kenya. Products purchased via the microcredit programme include seeds, fertilisers, post-harvesting technologies (drying sheets, storage bags, and pesticides), chicken feed packages, and different solar panel products. A machine learning-based basket analysis identified combinations of products purchased by male and female clients. Our results showed that female farmers usually made smaller investments, had higher repayment rates, and purchased more post-harvesting technologies than male farmers. In addition, female farmers used their loans to purchase less expensive products, whereas male farmers usually purchased more fertiliser and expensive solar panel products. The basket analysis revealed that female farmers purchased multiple products simultaneously more often than male farmers did. Finally, households without mobile phones had low repayment capabilities. Collectively, our findings show that microcredit programmes serving smallholder farmers can capitalise on their business data to learn about their clients’ gendered investment preferences and repayment behaviour.

Foodborne diseases (FBD) are an important externality of agriculture and food systems, but only since 2015 have they risen up the development agenda. In the first part of this Review, I discuss the multiple burdens of FBD and how they relate to food systems with a focus on low-income and middle-income countries (LMIC), particularly African nations. The health burden of FBD is comparable with that of malaria, and over 90% falls on people in LMIC, with an economic burden of more than US$100 million per year. FBD have many other, less well-estimated effects on nutrition, gender, equity, and the environment. FBD are becoming increasingly prevalent in LMIC and many outbreaks are attributable to nutritious, fresh foods purchased from informal markets. In the second part of the paper, I consider options for improved management of FBD at scale in LMIC. I summarize previous investments in Africa, finding that they have often been poorly directed and evaluated. Finally, on the basis of a systematic literature review, I make recommendations for an integrated framework to evaluate food safety interventions in LMIC, including a typology for interventions and five factors critical for success. Incorporating these factors into food safety interventions will ensure that they are scalable and sustainable.

This article investigates the short-term effects of an information intervention that provided early warning pest alerts and integrated pest management (IPM)-based advice to smallholder farmers. Specifically, this study focuses on fall armyworm (Spodoptera frugiperda) of maize in Ghana. We particularly examine the relationships between access to pest risk information and a number of outcomes, ranging from farmer’s knowledge to household food security. This study is based on survey data collected between December 2021 and January 2022 from 888 farm households operating 1305 maize fields. Results from doubly robust and switching regression models indicated that exposure to the pest risk information campaign was significantly (ρ < 0.05) associated with increases in the likelihood of optimal timing of fall armyworm control action and the adoption of multiple IPM practices, but it had no significant effect on pesticide use. Households who received the pest risk information obtained an average of 4% or 54 kg/ha (ρ < 0.01) gain in maize yield and were about 38% less likely (ρ < 0.01) than their non-recipient counterparts to report experiencing hunger, as measured by the household hunger scale. However, the pest risk information campaign was not associated with greater household dietary diversity. Further results indicated that households where the pest risk information was received by women, alone or together with their spouses, were more likely (ρ < 0.05) to achieve positive outcomes than if the recipient of information were male member of households. Overall, our findings imply that the dissemination of early warning pest alerts in combination with actionable IPM information to smallholder farmers can contribute to the adoption of sustainable crop protection technologies, and ultimately improve the standard of living of farm households.

Agricultural extension, or advisory services, have a key role to play in supporting farmers’ learning and adoption of new practices and technologies. This paper analyses gaps and needs which require addressing in order for extension systems to more effectively contribute to the upscaling of ecological intensification approaches in East African smallholder agriculture. Our starting point is the push-pull technology (PPT), a promising approach. PPT originated in East Africa and is being continuously improved through cycles of interdisciplinary and participatory experimentation. Despite well-documented benefits to farmers and the environment, more institutional support from agricultural extension systems (AES) is needed for PPT to realise significant impact on poverty reduction, food security, and sustainability. Departing from this assessment, we review literature on AES in five East African countries. After clarifying the AES characteristics that ecological intensification requires, emphasising the capacity to embrace complexity, we identify four thematic areas that are in urgent need of attention: first, widely recognised problems with access and inclusiveness have seen welcome innovation but remain substantial. Second, information and communication technologies provide many benefits and new possibilities, but expectations must be tempered. Third, pluralistic AES present coordination challenges that risk undermining and misdirecting extension. Finally, the political-economic underpinnings of extension require critical scrutiny and strategic interventions. While many challenges threaten extension effectiveness broadly, we highlight implications for ecological intensification approaches like PPT. Our insights thus speak to the broader question of how to design and implement extension for sustainable agricultural development in East Africa.

Food security measurement is of paramount importance as it guides governance, policy formulation and intervention projects targeting and monitoring and evaluation. The measurement of food insecurity has proven to be a difficult task owing to the multi-dimensionality of the construct and different measurements have been developed to measure different dimensions of food insecurity. However, it is difficult to apply the different measurements to a holistic food security measurement as their classification might not agree. The current study proposes a composite food insecurity indicator by aggregating items from Household Dietary Diversity Score (HDDS), Household Food Insecurity Access Scale (HFIAS) and Months of Inadequate Household Food Provision (MIHFP) for Windhoek households’ data into a single measure using the Rasch Testlet Response Model. The composite measure was internally validated against the HDDS, HFIAS and MIHFP and externally validated against household income and the Lived Poverty Index (LPI) using Spearman's Rank Correlation and Cohen's Kappa. The validation results suggest that the metric could be a promising measure of aggregate food insecurity worth further investigation and discussion. However, more research is needed in coming up with cut-points for categorizing households into food insecurity statuses. In addition, the metric has only been computed and tested on a single urban sample in the Global South and hence it is not generalizable to different setups. Other researchers who might want to use the index can try to estimate and validate the index in different scenarios and suggest ways the index can be improved.

Seed is a critically important basic input of agriculture, because sowing healthy seeds is essential to food production. Using high quality seed enables less use of synthetic pesticides in the field. Seedborne pathogens can reduce yield quantity and quality of the crops produced. Seed treatments protect plant seedlings from pathogen attacks at emergence and at the early growth stages, contributing to healthy crop plants and good yield. However, there is increased concern about the application of synthetic pesticides to seeds, while alternatives are becoming increasingly addressed in seedborne pathogen research. A series of strategies based on synthetic fungicides, natural compounds, biocontrol agents (BCAs), and physical means has been developed to reduce seed contamination by pathogens. The volume of research on seed treatment has increased considerably in the past decade, along with the search for green technologies to control seedborne diseases. This review focuses on recent research results dealing with protocols that are effective in the management of seedborne pathogens. Moreover, the review illustrated an innovative system for routine seed health testing and need-based cereal seed treatment implemented in Norway.

Graphical Abstract

This study traces the consumption of animal-source foods (ASF) during a period of rapid economic change and food system transformation in Myanmar. We use data from two nationally representative consumption surveys conducted in 2010 and 2015 and food composition tables to estimate the contributions of ASF to estimated average requirements (EARs) of key nutrients among population subgroups differentiated by geography and economic status. We find: (1) Little change in the average quantity of ASF consumed per individual, but substantial changes in the composition of the ASF consumed. (2) Increasing rural–urban and income-linked inequality in quantities of ASF and associated nutrients consumed. (3) Declines in the adequacy of intakes of five out of eight micronutrients (calcium, iron, zinc, thiamine, vitamin B12) and small increases in two (selenium and vitamin A), due to the changing composition of ASF; most importantly, reductions in the supply of diverse aquatic foods from capture fisheries and increasing availability of intensively reared chicken. (4) Elevated levels of ASF-derived total fat and sodium consumption among better-off consumers, suggesting an emerging triple burden of malnutrition. We review the implications of these results for food security, nutrition-sensitive policies and interventions beyond Myanmar.

A global transformation of food systems is needed, given their impact on the three interconnected pandemics of undernutrition, obesity and climate change. A scoping review was conducted to synthesise the effectiveness of food system policies/interventions to improve nutrition, nutrition inequalities and environmental sustainability, and to identify double- or triple-duty potentials (their effectiveness tackling simultaneously two or all of these outcomes). When available, their effects on nutritional vulnerabilities and women’s empowerment were described. The policies/interventions studied were derived from a compilation of international recommendations. The literature search was conducted according to the PRISMA extension for scoping reviews. A total of 196 reviews were included in the analysis. The triple-duty interventions identified were sustainable agriculture practices and school food programmes. Labelling, reformulation, in-store nudging interventions and fiscal measures showed double-duty potential across outcomes. Labelling also incentivises food reformulation by the industry. Some interventions (i.e., school food programmes, reformulation, fiscal measures) reduce socio-economic differences in diets, whereas labelling may be more effective among women and higher socio-economic groups. A trade-off identified was that healthy food provision interventions may increase food waste. Overall, multi-component interventions were found to be the most effective to improve nutrition and inequalities. Policies combining nutrition and environmental sustainability objectives are few and mainly of the information type (i.e., labelling). Little evidence is available on the policies/interventions’ effect on environmental sustainability and women’s empowerment. Current research fails to provide good-quality evidence on food systems policies/interventions, in particular in the food supply chains domain. Research to fill this knowledge gap is needed.