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Building Regional Surveillance, Prevention and Management Capacities to Combat the Possible Spread of Fusarium Wilt Caused by Fusariumoxysporumf.sp.cubense Tropical Race 4 Fungus (FOC TR4) - TCP/RLA/3724








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    Brochure, flyer, fact-sheet
    What you need to know about Tropical Race 4
    TR4 Global Network - An initiative of the World Banana Forum
    2020
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    The flyer, What you need to know about TR4, aims to inform the general public with basic information about Tropical race 4 (TR4). The underlying message is that actions can indeed be taken to help prevent the spread of the pest and that the way forward is for stakeholders across the banana industry to act with urgency and in a collaborative manner. Fusarium Tropical race 4 (TR4) is a strain of the soil born fungus, Fusarium oxysporum f. sp cubense whose spores can lie dormant in the soil until a susceptible plant is established nearby. These spores infect the plant through the roots and inhabit the banana or plantain plant’s xylem vessels, blocking the flow of water and nutrients. Fungicides can't save plants that are already infected with TR4, and the fungus's spores persist in soil for decades. Therefore the most immediate approach to combat TR4 is prevention of its spread into clean areas and containment when it is detected. In the long term, diversification of crops and better use of available genetic resources are key to building resilience to the disease. Agro-ecological innovations will be increasingly important to produce varieties less susceptible to TR4. The flyer focuses on three practical items that a visitor to a banana or plantation farm can do to minimise the risk of spreading TR4.
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    Brochure, flyer, fact-sheet
    Preventing the spread and introduction of banana fusarium wilt disease Tropical race 4 (TR4)
    Guide for travelers
    2020
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    Banana is an important crop for food security and ensuring the livelihoods of approximately 400 million people who depend on the crop either as a staple food or source of income, particularly in Asia, Africa, Latin America, and the Caribbean. Plant pests and diseases can seriously affect agricultural production and livelihood of rural people. Fusarium wilt of banana is one of the key examples of crop devastation by a plant disease. This disease brought the banana export industry almost to a halt in the 20th century when the popular banana variety Gros Michel was devastated in Central America. The sector was saved by the introduction of the Cavendish variety, which is resistant to race 1 of the fungus. However, Cavendish bananas are now succumbing to a new, highly aggressive strain of the Fusarium wilt fungus, Tropical race 4 (TR4). Fusarium wilt TR4 threatens almost all banana producers, posing the greatest risks to countries producing Cavendish bananas in monoculture plantations in Asia, Australia, Africa, the Near East, Latin America, and the Caribbean. Cavendish bananas, which constitute approximately half of the bananas grown globally are highly susceptible to TR4, but other dessert banana varieties grown in these regions are also susceptible. Once established in a banana plantation, the fungus can survive in the soil for decades with its chlamydospores, even without banana plants. Scientific reports indicate the presence of TR4 in numerous countries in Asia (China – mainland and Taiwan Province), India, Indonesia, Israel, Jordan, Lao People’s Democratic Republic, Lebanon, Malaysia, Myanmar,
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    Document
    Prevention and diagnostic of Fusarium Wilt (Panama disease) of banana caused by Fusarium oxysporum f. sp. cubense Tropical Race 4 (TR4). Technical Manual 2014
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    Global banana production is seriously threatened by the re-emergence of a Fusarium Wilt. The disease, caused by the soil-borne fungi Fusarium oxysporum f. sp. cubense (Foc) and also known as “Panama disease”, wiped out the Gros Michel banana industry in Central America and the Caribbean, in the mid-twentieth century. The effects of Foc Race 1 were overcome by a shift to resistant Cavendish cultivars, which are currently the source of 99% of banana exports.

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