maize lethal necrosis disease in kenya pdf

Participants are shown how to inspect maize fields for MLN symptoms and how to collect samples for laboratory analysis. Currently, 90% of the preferred commercial maize germplasm grown by farmers in Kenya is susceptible to MLN disease. rop losses of up to 100% were … The most commons are the potyvirus Sugarcane Mosaic Virus (SCMV), Maize Dwarf Mosaic Virus () or the tritimovirus Wheat Streak Mosaic Virus (WSMV). In September 2011, a disease outbreak in Kenya was positively identified as Maize Lethal Necrosis Disease (MLND). Maize lethal necrosis (MLN) has rapidly emerged as one of the deadliest maize diseases in eastern Africa capable of causing complete yield loss under heavy disease pressure. Maize Lethal Necrosis Disease (MLND) A snapshot . Maize Lethal Necrosis Disease (MLND) Causal organism: Virus: A double infection of Maize chlorotic mottle virus (MCMV) and Sugarcane mosaic virus (SCMV) or any of the cereal viruses in the Potyviridae group (e.g. FAS/Nairobi estimates that the disease will reduce Kenya's estimated maize production by about 10% during the 2014/2015 marketing year. Deadly maize lethal necrosis disease under control, says expert The disease was first reported in Bomet county in 2011 in Bomet before spreading to other maize-growing regions. May 7, 2015. 7. Internationally, MLND has been reported from Peru, USA, Argentina, Mexico, Thailand, razil and hina. Based on previous editions produced by CIMMYT maize It has since spread in East and Central African (ECA) countries, causing massive yield losses. 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. 1 Introduction This popular booklet, already in its fourth edition, is designed as a quick guide for identifying maize diseases. Maize lethal necrosis disease symptoms (Photo 1a and Photo 1b) is caused by the synergistic co-infection of maize with maize chlorotic mottle virus symptoms (Photo 2) and any virus from the family Potyviridae, these include wheat streak mosaic virus, maize dwarf mosaic virus symptoms or sugarcane mosaic virus symptoms (formerly maize dwarf … This means that Kenya and neighboring countries which largely depend on maize … Viruses involved in maize lethal necrosis disease. Highlights Maize lethal necrosis (MLN) emerged as a serious threat to maize production and livelihoods of smallholders in eastern Africa since 2011. Plant clinic data collected by Plantwise countries in East Africa has corroborated a statement from the International Maize and Wheat Improvement Center (CIMMYT) which said maize lethal necrosis disease (MLN) is “under control but not eradicated”.. MLN is a destructive disease of maize caused by co-infection of Maize chlorotic mottle virus (MCMV) and any virus in the Potyvidrae … Symptoms: 1. What has been done so far? The main thrust of the current management strategy is to prevent the introduction of the disease through sound surveillance and early destruction of diseased plants. Maize Lethal Necrosis Disease (MLND) diagnostic solutions. The first report of Maize lethal necrosis (MLN) disease in Africa was in Bomet, Kenya, nine years ago. SUMMARY: Maize lethal necrosis disease (MLND) is a new viral disease for Africa. 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. It has caused great concern because plants are killed and little or no grain is produced. MLND symptoms are reported to be enhanced by conditions of drought, poor soil fertility and poor agricultural practices. Sep 26. Since then the disease has been reported in Rwanda and DR . Symptoms similar to MLN were reported in Uganda, Tanzania, South Sudan and Ethiopia. The spread of Maize Lethal Necrosis (MLN) in the maize growing regions of Eastern Africa has intensified since the first outbreak was reported in September 2011 in Kenya. In Summary The Government of Kenya has undertaken several response interventions: Formation of a task force and monthly technical consultative fora Maize dwarf mosaic virus or Wheat streak mosaic virus). Based on previous editions produced by CIMMYT maize May 7, 2015 because plants are killed little... 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