Post-harvest Loss in Sub-Saharan Africa


Book Description

"The 2007-2008 global food crisis has renewed interest in post-harvest loss, but estimates remain scarce, especially in Sub-Saharan Africa. This paper uses self-reported measures from nationally representative household surveys in Malawi, Uganda, and Tanzania. Overall, on-farm post-harvest loss adds to 1.4-5.9 percent of the national maize harvest, substantially lower than the Food and Agriculture Organization's post-harvest handling and storage loss estimate for cereals, which is 8 percent. Post-harvest loss is concentrated among less than a fifth of households. It increases with humidity and temperature and declines with better market access, post-primary education, higher seasonal price differences, and possibly improved storage practices. Wider use of nationally representative surveys in studying post-harvest loss is called for"--Abstract.




Post-harvest losses in fruits and vegetables: The Kenyan context


Book Description

This report collates and contextualizes available evidence on post-harvest losses (PHL) in horticultural crops in Kenya. We begin by outlining the extent of PHL in horticultural crops and its repercussions in the context of food security and poverty reduction. We then describe the growing importance of the horticulture sector in Kenya and its growth potential, especially in terms of exports. Following this discussion, we detail PHL for two important horticultural crops, mangoes and tomatoes, for which Kenya-specific evidence is available. We discuss ways to mitigate PHL from three angles: technological, economic or behavioral, and institutional. Documenting cost-effective technological interventions to mitigate PHL, we catalogue ways to tackle PHL at the individual farmer level. We then highlight behavioral bottlenecks to adoption of such technologies and the need to design interventions in ways that address these. Finally, we discuss structural and institutional changes that would need to accompany individual-level interventions to bring about significant reductions in PHL.




Measuring postharvest losses at the farm level in Malawi


Book Description

Reducing food loss and waste are important policy objectives prominently featured in the United Nation’s Sustainable Development Goals. To optimally design interventions targeted at reducing losses, it is important to know where losses are concentrated between the farm and fork. This paper measures farmlevel postharvest losses for three main crops—maize, soy, and groundnuts—among 1,200 households in Malawi. Farmers answered a detailed questionnaire designed to learn about losses during harvest and transport, processing, and storage and which measures both total losses and reductions in crop quality. The findings indicate that fewer than half of households report suffering losses conditional on growing each crop. In addition, conditional on losses occurring, the loss averages between 5 and 12 percent of the farmer’s total harvest. Compared to nationally representative data that measure losses using a single survey question, this study documents a far greater percentage of farmers experiencing losses, though the unconditional proportion lost is similar. We find that losses are concentrated in harvest and processing activities for groundnuts and maize; for soy, they are highest during processing. Existing interventions have primarily targeted storage activities; however, these results suggest that targeting other activities may be worthwhile.




Post-harvest losses in rural-urban value chains: Evidence from Ethiopia


Book Description

We study post-harvest losses (PHL) in important and rapidly growing rural-urban value chains in Ethiopia. We analyze self-reported PHL from different value chain agents – farmers, wholesale traders, processors, and retailers – based on unique large-scale data sets for two major commercial commodities, the storable staple teff and the perishable liquid milk. PHL in the most prevalent value chain pathways for teff and milk amount to between 2.2 and 3.3 percent and 2.1 and 4.3 percent of total produced quantities, respectively. We complement these findings with primary data from urban food retailers for more than 4,000 commodities. Estimates of PHL from this research overall are found to be significantly lower than is commonly assumed. We further find that the emerging modern retail sector in Ethiopia is characterized by half the level of PHL than are observed in the traditional retail sector. This is likely due to more stringent quality requirements at procurement, sales of more packaged – and therefore better protected – commodities, and better refrigeration, storage, and sales facilities. The further expected expansion of modern retail in these settings should likely lead to a lowering of PHL in food value chains, at least at the retail level.




Sub-Saharan Africa (SSA) Report


Book Description

The International Assessment of Agricultural Knowledge, Science, and Technology for Development (IAASTD) looks realistically at how we could effectively use agriculture/AKST to help us meet development and sustainability goals. An unprecedented three-year collaborative effort, the IAASTD involved more than 400 authors in 110 countries and cost more than $11 million. It reports on the advances and setbacks of the past fifty years and offers options for the next fifty years. The results of the project are contained in seven reports: a Global Report, five regional Sub-Global Assessments, and a Synthesis Report. The Global Report gives the key findings of the Assessment, and the five Sub-Global Assessments address regional challenges. The volumes present options for action. All of the reports have been extensively peer-reviewed by governments and experts and all have been approved by a panel of participating governments. The Sub-Global Assessments all utilize a similar and consistent framework: examining and reporting on the impacts of AKST on hunger, poverty, nutrition, human health, and environmental/social sustainability. The five Sub-Global Assessments cover the following regions: Central and West Asia and North Africa (CWANA) East and South Asia and the Pacific (ESAP) Latin America and the Caribbean (LAC) North America and Europe (NAE) Sub-Saharan Africa (SSA)




The Sweetpotato


Book Description

In the last four decades of the twentieth century the use of sweetpotato was diversified beyond their classification as subsistence, food security, and famine-relief crop. In developing countries they serve both as human food and for feeding livestock. In Western countries they appeal to health conscious consumers because of their nutritional aspects. The sweetpotato is very high in nutritive value, and merits wider use on this account alone. The book has 2 parts. A general one giving up-to-date information on the history, botany, cultivars, genetic engineering, propagation, diseases and pests, nutritional data and marketing; and a second part presenting data on sweetpotato growing practices in different areas of the world. The information should be useful to researchers, practitioners and crop administrators in different countries.




Sustainable Agricultural Mechanization: A Framework for Africa


Book Description

This framework presents ten interrelated principles/elements to guide Sustainable Agricultural Mechanization in Africa (SAMA). Further, it presents the technical issues to be considered under SAMA and the options to be analysed at the country and sub regional levels. The ten key elements required in a framework for SAMA are as follows: The analysis in the framework calls for a specific approach, involving learning from other parts of the world where significant transformation of the agricultural mechanization sector has already occurred within a three-to-four decade time frame, and developing policies and programmes to realize Africa’s aspirations of Zero Hunger by 2025. This approach entails the identification and prioritization of relevant and interrelated elements to help countries develop strategies and practical development plans that create synergies in line with their agricultural transformation plans. Given the unique characteristics of each country and the diverse needs of Africa due to the ecological heterogeneity and the wide range of farm sizes, the framework avoids being prescriptive.




Post-harvest loss in Mozambique - Estimating maize loss in Manica and Zambezia provinces


Book Description

In Mozambique, food security remains a key issue and the country suffers perennial food shortages, especially in the provinces of Manica,Tete, Sofala, Zambezia, Maputo and Gaza. Weaknesses in post-harvest systems, which contribute to both a lower supply and higher food prices (due to post-harvest losses) are key reasons behind these food shortages. Currently, none of the post-harvest losses programmes conducted in Mozambique provides loss estimates along the entire value chain for a given commodity. In this report, we quantify losses across the value chain in maize, which is a key staple food in Mozambique, in the provinces of Manica and Zambezia. The study, carried out by the International Food Policy Research Institute (IFPRI) in collaboration with the Agrifood Economics Division (ESA) at FAO, sheds light on understanding the magnitude, nature and consequences of food losses across the maize value chain in selected regions in Mozambique. In particular, the methodology used in this report allows to accurately measure food losses and identify in which segment of the value chain these food losses occur and the causes of the losses.




Prevention of Post-harvest Food Losses


Book Description




Farmers’ grain storage and losses in Ethiopia: Measures and associates


Book Description

Storage losses at the farm are often assumed to be an important contributor to presumed large postharvest losses in developing countries. However, reliable and representative data on these losses are often lacking. We study farmers’ storage decisions and self-reported storage losses for grain based on two recent large-scale household surveys conducted in major agricultural areas in Ethiopia. We show that a relatively large share of grain production is stored by farm households themselves, mainly for own consumption, and that storage technologies are rudimentary. We find that farmers’ self-reported storage losses amount to an average of 4 percent of all grain stored and 2 percent of the total harvest. These storage losses are shown to differ significantly by socio-economic variables and wealth, but also by crop and humidity. We further see strong spatial heterogeneity in storage losses, being significantly higher in the southwestern part of the country. Efforts to scale up the adoption of improved storage technologies to reduce storage losses at the farm level should take into consideration these characteristics.