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Protecting cassava, a neglected crop, from pests and diseases










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    Journal, magazine, bulletin
    FAO Food Chain Crisis Early Warning Bulletin
    Forecasting threats to the food chain affecting food security in countries and regions. No. 30, January-March 2019
    2019
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    During the period January to March 2019, Food Chain Crisis (FCC) threats are expected to occur in Africa, the Americas, Asia and Europe, where they may persist within a country, spread to neighbouring countries, remain latent, or re-emerge or amplify. The dynamics and likelihood of occurrence of FCC threats depend on a number of risk factors or drivers. These include agro-ecological factors (intensive farming systems, deforestation, overgrazing, etc.), climate change (such as droughts, extreme weather events, flooding, heavy rains, heatwaves, the El Niño-Southern Oscillation - ENSO or changes in vegetation cover or water temperature), human behaviour (cultural practices, conflicts and civil insecurity, trade, etc.) and natural disasters. In relation to food security, and according to the latest Crop Prospects and Food Situation report (January- March 2019), FAO estimates that, globally, 40 countries (31 in Africa, 8 in Asia, and 1 in the Americas) are in need of external assistance for food. Persisting conflicts continue to be the dominant factor driving high levels of severe food insecurity. Weather shocks have also adversely affected food availability and access. FCC threats might compound food insecurity in fragile countries stricken by weather shocks and conflicts. Twenty-nine plant and forest pests and diseases, locusts and animal and aquatic diseases were monitored and forecasted by FAO experts for the period January-March 2019. A total of 275 forecasts were conducted in 120 countries. According to the forecasts, the following pests and diseases represent a high to moderate risk to the food chain in some countries for the period January-March 2019: Rift Valley fever (RVF) in Africa, African swine fever (ASF) in Asia and Europe, Foot-and-mouth disease (FMD), Avian influenza (AI) in Africa and Asia, and Peste des petits ruminants (PPR) in Africa, Asia and Europe for Animal diseases and zoonoses; Fall armyworm (FAW), Banana fusarium wilt disease (BFWD) and Cassava mosaic disease (CMD) in Africa and Asia, and Cassava brown streak disease (CBSD), Wheat rust and Banana bunchy top disease (BBTD) in Africa for Plant pests and diseases; Desert Locust in Africa and Asia for Locusts; and Blue gum chalcid, Red gum lerp psyllid, Bronze bug and Polyphagous shot hole borer (PSHB) in Africa, Dry cone syndrome in Asia, Bark beetles in Europe and the Americas, and Pine processionary moth in Europe for Forest pests and diseases; Tilapia Lake Virus in the in the Americas and Asia, and Acute hepatopancreatic necrosis disease (AHPND) in Asia for Aquatic diseases.
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    Book (stand-alone)
    Cassava Diseases in Africa
    a major threat to food security
    2009
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    This regional strategic programme framework, entitled “Cassava diseases in central, eastern and southern Africaâ€Â (CaCESA), has been prepared by the Food and Agriculture Organization of the United Nations (FAO). It aims to assist countries affected by cassava pests and diseases. These are significantly affecting groups such as internally displaced persons (IDPs), returnees and the vulnerable whose food security is threatened. CaCESA is designed to assist vulnerable farm families in se lected districts of 15 countries1 in central, eastern and southern Africa. These countries are categorized in two groups: (i) countries already affected by the Ugandan variant of eastern Africa cassava mosaic virus (EACMV-Ug) and cassava brown streak virus (CBSV) diseases and where some mitigation activities are ongoing (Burundi, Congo, Democratic Republic of the Congo, Kenya, Rwanda, Tanzania and Uganda); and (ii) countries threatened by the spread and progress of cassava diseases ( Angola, Central African Republic, Gabon, Malawi, Mozambique, Sudan, Zambia and Zimbabwe).
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    Document
    Cassava processing: cassava wet flour 2006
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    Cassava (Manihot Esculenta Crantz) is the third most important source of calories in the tropics, after rice and maize. Millions of people depend on cassava in Africa, Asia and Latin America. It is grown by poor farmers, many of them women, often on marginal land. For those people and their families, cassava is vital for both food security and income generation. Cassava is a raw material base for an array of processed products that could effectively increase demand for cassava and contribute to agricultural transformation and economic growth in developing countries. The following technology describes how to obtain cassava flour from cassava tubers.

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