Evans School Policy Analysis & Research Group (EPAR)

Cassava production is prone to many constraints throughout the production cycle, including biotic, abiotic, and management constraints. This brief reviews the literature on the production impacts of two key cassava stressors: cassava bacterial blight (CBB) and postharvest physiological deterioration (PPD). We summarize available estimates of the frequency and magnitude of these constraints relative to other drivers of cassava production losses that affect smallholder farmers in Sub-Saharan Africa (SSA), review the control strategies proposed in the literature, report on the views of several experts in the field, and identify research gaps where relatively little appears to be known about CBB or PPD yield impacts or best practices for CBB or PPD management. 

Agriculture and Climate Change: Part I

With estimated global emissions of 5,969-6,615 metric tons (Mt) of carbon dioxide (CO2) per year, agriculture accounts for about 13.5% of total global anthropogenic emissions of greenhouse gases (GHG). Deforestation contributes about 11.8% of total GHG emissions, releasing about 5,800 Mt CO2 per year. Developing countries are largely responsible for emissions from agriculture and deforestation, with the developing countries of South Asia and East Asia accounting for 17% and 25% of global agricultural emissions respectively. Sub-Saharan Africa (SSA) accounts for about 13% of global emissions from agriculture and 15% of emissions from land use change and forestry. This report examines the biophysical and economic potential of mitigating agriculture and land use GHG emissions, and provides a summary on the current and projected impact of global carbon market mechanisms on emission reductions. 

Agriculture and Climate Change: Part II

This report covers two topics related to agriculture and climate change in developing countries. The first section discusses the role of agricultural offsets in mitigating greenhouse gas emissions. Recent negotiations around a post-Kyoto Protocol agreement have included debate about whether agricultural carbon sequestration projects should be eligible under the Clean Development Mechanism (CDM). We examine the reasons for supporting or opposing this type of CDM reform and how these reasons relate to impacts on development goals and smallholder farmers, scientific uncertainty about carbon sequestration, and philosophical disagreement about the use of emission offsets. The second section covers proposed agricultural adaptation activities in Africa and other developing countries. While the majority of developing countries have outlined immediate adaptation needs in National Adaptation Programs of Action (NAPAs), few have made progress in implementing adaptation activities. We find that issues related to financial resources, scientific and technical information, and capacity building continue to challenge developing countries in preparing for the impacts of climate change.
 

In Mozambique, the legacies of colonial rule, socialism and civil war continue to constrain economic growth and agricultural production. Eighty percent of Mozambique’s labor force derives its livelihood from agriculture, but the nation remains a net food importer. The majority of all farmland is cultivated by smallholders whose fertilizer usage and crop yields are among the lowest in Africa. While Mozambique has experienced reasonable economic growth since the end of its civil war in 1992, it remains poor by almost any measure. In this literature review, we examine the state of agriculture in Mozambique, the country’s political history and post-war recovery, and the current fertilizer market. We find evidence that smallholder access to fertilizer in Mozambique is limited by lack of information, affordability, access to credit, a poor business environment, and limited infrastructure. The data demonstrate that increased investment in infrastructure is an important step to improve input and output market access for smallholders. The main government intervention currently impacting smallholder fertilizer use is the Agricultural Sector Public Expenditure Program (PROAGRI) initiative, however, more data is necessary to assess the impact of its policies and programs.

This literature review provides information on the dynamics of the maize market and maize prices in Zambia. We address four key topics: average production costs and breakeven prices for maize farmers in Zambia, main drivers of volatility of maize production volumes, key factors driving the differences between Zambian and global maize prices, and policies that may have contributed to increased farmer productivity.