Sign up to receive the latest news, information, updates and offers from CABI. Domestic regulation can be put in place to prevent the movement of maize products from affected areas to disease-free regions. If you would like to, you can learn more about the cookies we use, Develop and disseminate Maize lethal necrosis  resistant/ tolerant maize varieties that were adaptable to eastern Africa, Validate and disseminate proven MLND technologies, innovations and management practices in an integrated way to prevent the spread, Enhance the knowledge base on MLND viruses and the epidemiology of the disease in eastern Africa, Facilitate policy and economic analyses and advocacy to guide viable, equitable and gender responsive management interventions, Strengthen regional capacity for innovation to prevent and control Maize lethal necrosis. In the Biosafety Laboratory at CIMMYT headquarters, El Batán, Monica Mezzalama cuts up some MLN-infected maize leaves and crushes them into a buffer solution. The plants are dusted with a fine grey powder to cause surface damage, allowing the disease-causing viruses to enter when Mezzalama … These are estimated to have reached at least 50,000 listeners. Maize Lethal Necrosis Disease. The double infection of the two viruses gives rise to what is known as MLND, also referred to as Corn … The maize lethal necrosis (MLN) screening facility at the Kenya Agricultural Research Institute (KARI) Naivasha in Kenya. 8:51. It’s caused by infection with two viruses, MCMoV (Maize chlorotic mottle virus) and one from the Potyviridae group, MDMV (Maize dwarf mosaic virus), WSMV (Wheat streak mosaic virus), and SCMV (Sugarcane mosaic virus). An intensive multi-disciplinary and multi-institutional strategy is being implemented to curb the spread of MLN in sub-Saharan Africa, and mitigate the impact of the disease. Avoid visiting your maize ˜eld once in contact with any get common solution in consultation with the Ministry of Agriculture. The viruses are vectored by insects as maize thrips, rootworms and leaf beetles. CIMMYT 1,457 views. Entebbe, Uganda, Association for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA), National Agricultural Research Institutes from the respective project countries, International Maize and Wheat Improvement Centre (CIMMYT), CABI is a member of:  The Association of International Research and Development Centers for Agriculture. Maize is planted by a large number of farmers so the increased use of pesticides in the production of maize may have a negative impact on the environment. Maize lethal necrosis (MLN) emerged as a serious threat to maize production and livelihoods of smallholders in eastern Africa since 2011. Maize is an important food crop in majority of households in East and Central Africa, where it accounts for 40-50% of the calories and proteins consumed. Maize Lethal Necrosis disease (MLND) is a key regional and transboundary challenge that continues to bring havoc to farmers’ maize grain harvest and threatens food security in the eastern African region. – Identify existing  knowledge on MLND and the information needs and opportunities, – Improve dissemination of Maize lethal necrosis information, – Create awareness of Maize lethal necrosis among stakeholders. D I S E A S E F R E E D I S E A S E F R E E CERTIFIED Disease-free certified seed: Use certi˜ed seeds from a reputed seed agency or company. Highlights Maize lethal necrosis (MLN) emerged as a serious threat to maize production and livelihoods of smallholders in eastern Africa since 2011. Viruses involved in maize lethal necrosis disease Maize lethal necrosis disease symptoms (Photo la and Photo 1b) is caused by the synergistic co-infection of maize with maize chloro- tic mottle virus symptoms (Photo 2) and any virus from the family Potyviridae, these include wheat streak mosaic virus, maize dwarf Maize lethal necrosis (MLN) is a disease of maize caused by the combination of Maize chlorotic mottle virus (MCMV) and a virus belonging to the potyviridae family. We also produced a mini video on the project for use online which covered the annual review and planning meeting. This project researched solutions to minimize or eliminate the risks and effects of the disease in the region. The Maize Lethal Necrosis Disease (MLND) is a result of a combination of two viruses, the Maize Chlorotic Mottle Virus (MCMoV) and any of the cereal viruses in the Potyviridae group, like the Sugarcane Mosaic Virus (SCMV), Wheat Streak Mosaic Virus (WSMV) or Maize Dwarf Mosaic Virus (MDMV). This is to ensure that we give you the best experience possible. Case Study 2: Maize Lethal Necrosis Disease (MLND) Possible solutions: A government or agricultural industry task force can help provide surveillance and workshops to educate farmers so they can identify the problem early on. The coinfecting viruses act synergistically to result in frequent plant death or severely reduce or negligible yield. They also recommend not moving infected maize plants and seeds to disease-free areas. Continuing to use www.cabi.org means you agree to our use of cookies. By: Lava Kumar et al A new challenge for maize scientists in East Africa. Plantwise and partners also recommend rotating with non-cereal crops (e.g. Through use of various channels to reach stakeholders along the value chain, CABI disseminated information on the threat of the disease and ways to manage it. Maize Lethal Necrosis Disease in East Africa - Duration: 8:51. Through use of various channels to reach stakeholders along the value chain, CABI disseminated information on the threat of the disease and … Five live radio talk shows, three recorded radio programmes and one recorded TV news item were broadcast in Kenya, Tanzania and Uganda. When maize lethal necrosis (MLN) was first reported in Bomet County, Kenya, in September 2011 and spread rapidly to several countries in eastern Africa, agricultural experts feared this emerging maize disease would severely impact regional food security. Farmers should remove Presentation during IITA R4D week 2015 (23 - 27 Nov. 2015). The disease was first reported in Bomet county in 2011 in Bomet before spreading to other maize-growing regions. Nairobi, Kenya, May 11, 2015 – More than 150 participants will gather in Nairobi for an international conference from May 12 to 14, 2015, to share knowledge on the latest diagnostics and screening methods for the maize lethal necrosis (MLN) disease, and assess ways of curbing its spread … Plant maize at the onset of the main rainy season, rather than during the short rain season; this creates a break between maize crops and interrupts the disease cycle; Weed fields regularly to eliminate alternate hosts for insect vectors. •. Crop rotation: Grow non-maize crop like legumes after the maize crop to avoid regular MLN host. By 2012, symptoms consistent with maize lethal necrosis were observed in a number of districts in the Central, Nyanza, Western and Rift Valley provinces of Kenya. Environmental Impact. The disease is difficult to control for two reasons: It is caused by a combination of two viruses that are dif Partners of the CABI-led programme, Plantwise recommend where possible using certified, disease-free seed. To reduce instances and severity of the disease and its spread the team sought to increase and achieve equitable access and use of technologies, innovations, management practices and knowledge of disease management. Since then the disease has been reported in Rwanda and DR . Deadly maize lethal necrosis disease under control, says expert. We produced a maize lethal necrosis poster in English that targeted farmers and translated it into Kiswahili for Tanzania and Kenyan audiences, Kalenjin for Kenya and seven languages in Uganda. Of 17 symptomatic leaf samples from each Bomet and Naivasha, nine from Bomet and all 17 from Naivasha were positive for MCMV. These facilities include Maize Lethal Necrosis (MLN) screening facility in Naivasha, Kiboko’s Crops Research Station among others. Plant Microbiology - Viral Diseases : FACT SHEET NO. Symptoms similar to MLN were reported in Uganda, Tanzania, South Sudan and Ethiopia. A serious new disease of maize appeared in the farmers’ fields in eastern Africa in 2011. All these trait-associated markers have been validated in biparental populations. Maize lethal necrosis (MLN) is a severe disease affecting corn. “There has been a tremendous progress in research of an alternative maize crop disease control since the establishment of MLN screening facility back in September 2011 when we collaborated with KALRO to put up the research facility in Naivasha. •. The most commons are the potyvirus Sugarcane Mosaic Virus (SCMV), Maize Dwarf Mosaic Virus () or the tritimovirus Wheat Streak Mosaic Virus (WSMV). Maize Lethal Necrosis Disease (MLN Disease, MLND, Corn Lethal Necrosis) is a disease affecting maize (corn) chiefly in East Africa. This project researched solutions to minimize or eliminate the risks and effects of the disease in the region. Maize lethal necrosis (MLN) is a disease of maize caused by coinfection of maize with maize chlorotic mottle virus (MCMV) and one of several viruses from the Potyviridae, such as sugarcane mosaic virus, maize dwarf mosaic virus, Johnsongrass mosaic virus or wheat streak mosaic virus. You are here: The team also used radios and television shows to channel information. Control: Immediately remove diseased plants from your fields. The major biotic causes of stress in maize include Striga a parasitic weed, insect pest, diseases mainly northern corn leaf blight, maize lethal necrosis (MLN), Maize streak virus (MSV), and common leaf rust, gray leaf spot (GLS), stalk and ear rot. The disease is caused by the combination of Maize chlorotic mottle virus (MCMV) and a virus belonging to the potyviridae family, commonly Sugarcane Mosaic Virus (SCMV). Sally Kosgei eulogises former president Daniel Arap Moi - Duration: 20:39. © Copyright 2019 CABI is a registered EU trademark, Managing Maize lethal necrosis disease in eastern and central Africa, Like most websites we use cookies. However, the observed symptoms were more severe than commonly associated with MCMV, suggesting the presence of maize lethal necrosis (MLN), a disease that results from maize infection with both MCMV and a potyvirus (4). The team conducted an information needs assessment in Kenya, Tanzania and Uganda that guided the development of a project communication plan. he International Maize and Wheat Improvement Centre. CIMMYT scientists have discovered several marker trait associations for crop diseases including maize lethal necrosis (MLN), maize streak virus (MSV), corn rust and turcicum leaf blight. The maize lethal necrosis (MLN) artificial inoculation screening site in Naivasha, Kenya, will begin its phenotyping (screening/ indexing) cycle of 2019 at the beginning of January 2019 and in other four intervals throughout the year. This contributed to increased maize productivity in the region and hence improved food security and income. ò MAIZE LETHAL NECROSIS HISTORY In September 2011, a disease outbreak in Kenya was positively identified as Maize Lethal Necrosis Disease (MLND). Top of page. [email protected]. Maize lethal necrosis disease (MLND) negatively affects maize crops and their seeds and is threatening food and economic security in East and Central Africa. An intensive multi-disciplinary and multi-institutional strategy is being implemented to curb the spread of MLN in … for at least 2-3 years/seasons and removing alternate hosts including, sorghum, grasses, millet, wheat, oats, sudan grass. The double infection of the two viruses gives rise to what A serious disease outbreak in Kenya, later diagnosed as maize lethal necrosis, was first reported in September 2011 in the Longisa division of the Bomet district. Enhance communication, information and knowledge on MLND with key CABI activities to. Maize lethal necrosis disease (MLND) negatively affects maize crops and their seeds and is threatening food and economic security in East and Central Africa. MLN is a new disease … Passing through two further sets of safety doors, she arrives at the greenhouse where several hundred young maize plants await inoculation. Home / Projects / Managing Maize lethal necrosis disease in eastern and central Africa. In addition, four print media articles on the problems and management of the disease were published in national newspapers in Uganda and Kenya, including; ‘Seeds of Gold’ in both countries, ‘Harvest Money’ magazine and ‘New Vision’. International coalition keeps devastating maize disease at bay, but risks still linger. Farmers view maize seedlings under research in Naivasha during inauguration of the Maize lethal necrosis disease screening center in KARI-Naivasha.Photo/George Murage. For production and use of clean certified MCMV disease free maize seeds . Use maize varieties that are resistant to MLN . (Photo: George Mahuku/CIMMYT) This announcement by Dr. L. M. Suresh was originally published on the Maize Lethal Necrosi s Information Portal of the International Maize and Wheat Improvement Center (CIMMYT) . Maize Lethal Necrosis Disease (MLND) diagnostic solutions. One of the management options for the disease is vector control by the use of insecticides. The outbreak and rapid spread of Maize lethal necrosis disease has emerged as a great challenge to maize production, threatening food security for the majority of households in the Eastern and Central Africa region. The project on ‘Preventing Seed Transmission of Maize Lethal Necrosis in Africa’ aims to generate a better understanding of these epidemiological issues to allow for more effective control of MCMV transmission through commercial seed, support the development of effective, evidence-based phytosanitary regulations, reduce MLN disease pressure in eastern Africa, and curb the spread to non … Box 295. Seed Inspectors can check for Maize lethal necrosis disease (MLND) in seed farms. Scientists, policymakers, seed companies and regulators converge to seek solutions on maize lethal necrosis. Sep 26. beans, faba bean, chickpea etc.) Efforts in managing the maize lethal necrosis disease have contributed to reducing seed production losses, an expert has said. Prevention. Rotate maize with non-cereal crops such as sweet potato or beans for a period of 2-3 seasons if MLND had attacked your or neighbouring fields; Do not plant maize near fields with infested maize as the disease will spread into your field; Avoid movement of green maize from infected areas to disease-free … The Maize Lethal Necrosis Disease (MLND) is a result of a combination of two viruses, the Maize Chlorotic Mottle Virus (MCMoV) and any of the cereal viruses in the Potyviridae group, like the Sugarcane Mosaic Virus (SCMV), Wheat Streak Mosaic Virus (WSMV) or Maize Dwarf Mosaic Virus (MDMV). NARO Secretariat, 13 Lugard Avenue, P.O. We also disseminated MLNDs information through 82 plant health rallies in over 20 districts and provinces throughout Burundi, Kenya, Rwanda, Tanzania and Uganda which reached over 11,635 farmers, traders, community leaders and agro-dealers (5,241 men, 3,921 women and 2,473 youth and children). 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