Baseline survey on emerging pests in Eastern Africa


Book Description

Globalization, trade, and climate change, as well as reduced resilience in production systems due to decades of agricultural intensification, have played roles in the spread of pests. One of the significant threats to sustainable crop production across Eastern African countries is the increasing phenomenon of the introduction and spread of emergent pests. FAO Subregional Office for Eastern Africa (SFE), in collaboration, with the Centre for Agriculture and Bioscience International (CABI) undertook a survey and assessment to review the status of early warning, preparedness, and response capacities of NPPOs and agriculture extension services in the Eastern African countries. The survey involved a desk review of emergent pests, including insects, diseases, nematodes, and weeds. This report describes the status of their distribution in Eastern Africa, biological characteristics, description of hosts and symptoms on hosts as well as their economic importance and associated phytosanitary risks. The Intervention is designed to gather baseline information for developing fit-for-purpose initiatives to safeguard productivity and reduce vulnerabilities to shocks affecting food and nutrition security caused by pests and strengthen the relevant capacities of stakeholders to cope with these threats. The overall output is to develop a roadmap for surveillance, monitoring, and early response to emerging pests in Eastern Africa. Review of the existing plant protection acts and legislation; pest-listing activities for countries to develop lists of quarantine and non-quarantine pests and undertaking national contingency planning for prioritized pests are among the major recommended interventions.





Book Description







The Economic Impact of Climate Change on Kenyan Crop Agriculture: A Ricardian Approach


Book Description

This paper measures the economic impact of climate on crops in Kenya. The analysis is based on cross-sectional climate, hydrological, soil, and household level data for a sample of 816 households, and uses a seasonal Ricardian model. Estimated marginal impacts of climate variables suggest that global warming is harmful for agricultural productivity and that changes in temperature are much more important than changes in precipitation. This result is confirmed by the predicted impact of various climate change scenarios on agriculture. The results further confirm that the temperature component of global warming is much more important than precipitation. The authors analyze farmers' perceptions of climate variations and their adaptation to these, and also constraints on adaptation mechanisms. The results suggest that farmers in Kenya are aware of short-term climate change, that most of them have noticed an increase in temperatures, and that some have taken adaptive measures.




Integrated Pest Management in the Global Arena


Book Description

This book presents experiences and successful case studies of integrated pest management (IPM) from developed and developing countries and from major international centres and programmes. It contains 39 chapters by many contributors addressing themes such as: emerging issues in IPM, including biotechnology, pesticide policies and socioeconomic considerations (8 chapters); country experiences from Africa, Asia, North and South America, Europe, Australia and New Zealand (20 chapters); and regional and international experiences, including those of FAO, USAID, ICIPE, CIRAD, the World Bank and CGIAR Systemwide IPM Program (9 chapters). This book will be of significant interest to those working in the areas of crop protection, entomology and pest management.




A Ricardian Analysis of the Impact of Climate Change on African Cropland


Book Description

This study examines the impact of climate change on cropland in Africa. It is based on a survey of more than 9,000 farmers in 11 countries: Burkina Faso, Cameroon, Egypt, Ethiopia, Ghana, Kenya, Niger, Senegal, South Africa, Zambia, and Zimbabwe. The study uses a Ricardian cross-sectional approach in which net revenue is regressed on climate, water flow, soil, and economic variables. The results show that net revenues fall as precipitation falls or as temperatures warm across all the surveyed farms. In addition to examining all farms together, the study examined dryland and irrigated farms separately. Dryland farms are especially climate sensitive. Irrigated farms have a positive immediate response to warming because they are located in relatively cool parts of Africa. The study also examined some simple climate scenarios to see how Africa would respond to climate change. These uniform scenarios assume that only one aspect of climate changes and the change is uniform across all of Africa. In addition, the study examined three climate change scenarios from Atmospheric Oceanic General Circulation Models. These scenarios predicted changes in climate in each country over time. Not all countries are equally vulnerable to climate change. First, the climate scenarios predict different temperature and precipitation changes in each country. Second, it is also important whether a country is already hot and dry. Third, the extent to which farms are irrigated is also important.







Conserving Biodiversity in East African Forests


Book Description

Tanzania is one of the most biologically diverse nations in the world. Traveling from west to east across Tanzania, one encounters an incredible array of ecosystems and species. Beginning at Lakes Victoria, Tanganyika, and Nyasa that form much of the western boundary of Tanzania, one finds the most diverse and some of the most spectacular concentrations of endemic fish in any of the world's lakes. Moving further inland from the lakes, one meets the woodlands and plains of Serengeti, Ngorongoro, Tarangire, and Lake Manyara. The assemblages and movements of large mammals in these protected areas are unparalleled worldwide. Traveling yet further to the east, one comes to Mount Kilimanjaro, the highest mountain in Africa. Mount Kilimanjaro is of sufficient height to not only contain seven major vegetation zones, but also maintain permanent glaciers. Finally, shortly before arriving at the Indian Ocean, one encounters the Eastern Arc Mountains, a series of isolated and geologically ancient mountains, which due to their height and proximity to the Indian Ocean intercept sufficient precipitation to support, in many areas, moist tropical forest. The Eastern Arc Mountains are among the richest sites biologically in all of Africa and harbor unusually high concentrations of endemic species - species whose geographic distribution are restricted to these mountains. Unfortunately, much of Tanzania's biodiversity is threatened by habitat alteration, destruction, and exploitation. The Eastern Arc forests face some of the most severe threats to any of Tanzania's biologically unique sites.







Expanding Collaboration, Catalyzing Innovation


Book Description

The stories presented in this report illustrate how improved collaboration among RTB centers is making a real difference. This includes harnessing the potential of genomics to accelerate the development of improved RTB varieties, facilitating collaborative responses to critical crop diseases and improving postharvest options. During its second year, the CGIAR Research Program on Roots, Tubers and Bananas (RTB) expanded its geographic reach and its network of partners while launching a series of collaborative initiatives aimed at resolving the most serious constraints faced by smallholder farmers growing RTB crops. While this work was initiated within a framework of seven disciplinary themes, RTB started a process to transition from an output-focused research agenda to one based on outcomes and impacts.