Types of Research
In Sub-Saharan Africa (SSA), maize alone provides an estimated one third of the mean caloric intake and in 2006, accounted for 21% of all harvested food crops, making it the single most important food crop in the region. In addition, maize is also used as feedgrain and fodder, adding to its importance in integrated smallholder farming systems in SSA. In general, women are the main producers of staple crops such as maize. Understanding the gender dimensions of maize is particularly challenging because maize is used as both a subsistence and cash crop, and may be considered either a male or female crop depending on farmer circumstances and how the particular variety is promoted. This brief provides an overview of the role of women in maize production, and provides a framework for analyzing barriers to women and technology’s impact on women throughout the cropping cycle. We find that lower access to factors such as extension access, education level, land, and labor contribute to female’s lower rate of maize technology adoption. Understanding women’s disproportionate access to resources and how improved technology may change allocation of resources should help project developers improve both women’s and men’s productivity.
In the last half century, the increased opportunity cost of women’s time in Sub-Saharan Africa (SSA) has led to remarkable growth in the consumption of wheat and other easy-to-prepare staples. Wheat tends to be grown and processed on a large scale in SSA. Ethiopia (SSA’s largest producer of wheat) is the exception, where smallholders are responsible for 76% of total production. This brief provides an overview of the role of women in wheat production, and provides a framework for analyzing technology’s impact on women throughout the cropping cycle. We find that many constraints exist to adoption of improved wheat varieties by women. A review of improved wheat variety adoption in the developing world found that it takes 5-10 years after breeding to the release and another 5-10 years for full adoption, but this length of time has been found to be reduced with the use of participatory breeding, varietal selection, and gender analysis. By including women in every stage of development and planning of new technologies, programs can become more aware of the needs of targeted women and therefore, increase adoption rates and improve the productivity of men and women in wheat farming.
As a source of employment for over 20 million Sub-Saharan African (SSA) farmers and the fastest-growing food source in Africa, rice plays a vital role in African economies and daily life. Women play a substantial role in SSA rice production and rely heavily on the income it generates. Not recognizing this role has often resulted in development and research projects failing to address women’s well-being and also failing to achieve project and development goals. Female farmers in SSA have been less likely than male farmers to adopt productivity-enhancing rice technologies such as improved seeds, fertilizer, pesticides, or small machinery, even when those technologies are designed specifically to help women. A more complete understanding of the dynamics and diversity of gender roles in rice farming is necessary to improve the likelihood of successful interventions. This brief provides an overview of the role of women in rice production, and provides a framework for analyzing technology’s impact on women throughout the cropping cycle. We find that labor constraints, low education levels, cultural inappropriateness, and asymmetric access to resources all contribute to low adoption of rice technology by women. In order to fully realize the poverty reduction benefits of increased rice production in SSA, evidence suggests that research and extension programs must consider how interventions will affect women along every stage of the production chain. The effect on women and their households will vary depending on region, culture, ethnicity, socio-economic status, and role in cultivating rice.
Lack of nitrogen (N) is often cited as the most limiting factor in agriculture. Although N composes nearly 80% of the atmosphere, plants are unable to use this form of the element (N2) because of the strong triple bonds between the two atoms. Nitrogen deficiency is especially problematic in the soils of Sub-Saharan Africa (SSA). Low levels of N and other soil fertility problems have severe poverty, malnutrition and environmental degradation consequences for SSA. The process by which atmospheric N2 is converted into N compounds that can be used by living things is called nitrogen fixation. Biological nitrogen fixation (BNF or biofixation) offers an alternative or additional means to traditional nitrogen fixation to increase plant-available nitrogen. Through a symbiotic relationship, an N-fixing bacterium infects a plant (usually a legume) and forms nodules on the roots of the plant in which N fixation occurs. This literature review examines the expansion and benefits of BNF, the constraints to BNF adoption, BNF regulations, and success stories of developing and distributing BNF technologies worldwide. BNF technology can be an efficient and effective tool for decreasing environmental degradation and increasing soil fertility, yields, income, and food security in SSA, although many constraints to farmer adoption exist.
This report present a thorough review of relevant literature regarding labor constraints currently being faced in Sub-Saharan Africa (SSA). The review focuses on the impacts of labor supply issues, particularly as they relate to the use of new technology and management techniques, off farm labor migration, and the impacts of HIV/AIDS. The review is provides a basic breakdown of the different kinds of agricultural labor in SSA, before presenting the evidence on the causes and impact of agricultural labor constraints. Though labor constraints can be relevant on both the demand and supply side, especially for certain groups such as women and youth, our review follows the literature by focusing on the supply side issues. The literature reviewed was written between 1990 and 2008, and includes a combination of reports from government organizations and highly cited journal articles.
This brief presents an in depth analysis of the FAO’s methodology behind their calculations for hunger. The analysis includes a review of the key assumptions made by the FAO in their calculations, critiques of their methodology, and recommendations for future research. The critiques include opinions from the literature on the subject as well as from the authors of the request.
This brief presents an initial examination of the possibility of using Disability Adjusted Life Years (DALYs) as a way to evaluate agricultural interventions. We review DALYs, their formulation, and the data necessary to compute values. A review of relevant literature suggests that to use DALYs as an evaluative tool, an agricultural intervention must be tied to a specific disease, and from there, impacts on DALYs can be assessed.
As our understanding of the impacts of hidden hunger on human nutrition grows, understanding the link between fertilizer use and human nutrition becomes increasingly important. This report presents an analysis of both grey and peer-reviewed literature on the effects of fertilizer use on nutritional quality of food, particularly the staples of maize, rice, wheat, cassava and legumes. We find that some nutrient deficiencies, such as zinc, can be effectively addressed through fertilizer use while others, such as iron deficiency, are more difficult to address. Promising breakthroughs with fortified and complete fertilizers present the opportunity to correct multiple deficiencies. Current fertilizer products exist that, when applied with the proper agronomic methods, can have a significant effect on nutrition in the developing world. However, it is important to recognize that there are many factors in the developing world that have the potential to inhibit the benefits of fertilizer for human nutrition. Two significant factors are poor farmers’ difficulty in procuring the correct product and the relative sophistication required to apply fertilizers at the correct amounts and time to achieve desired results. In addition, researchers have not focused on fertilizer and nutrition studies until recently, particularly micronutrient fertilizer studies, and few studies specifically study the impacts of fertilizer on human nutrition. More research needs to be done to understand the most effective combinations and techniques, and to understand whether these methods truly increase the amount of nutrients bioavailable to humans.
This brief reviews the literature on the links between agriculture and human nutrition in rural South Asia, exploring why South Asia has experienced enormous growth in agricultural productivity without subsequent reductions in hunger. An annotated review of relevant articles is included in addition to the analysis. The articles are presented by sub-topic, including sustained economic growth versus lack of progress in nutrition rates and hunger in South Asia, primary determinants of improved nutrition at the household level, agricultural productivity/reform and interventions in nutritional status.
We conducted a literature review of strategic grain reserves (SGRs) are used to mitigate food crises. Our brief includes a short overview of the literature and a bibliography of top-cited articles relevant to specific sub-topics related to SGRs.