MLN is a disease caused by the synergistic combination of Maize Chlorotic Mottle Virus (MCMV) and any from the potyvirus family, in this case Sugarcane Mosaic Virus (SCMV). Post-Flowering Stalk Rot Disease 9. More than 60% people of Kenya live below the poverty line. Maize is an important food crop that is grown in most regions of Kenya and it is consumed in various forms by over 80% of the population. Republic of Kenya is the fourth largest economy in Sub-Saharan Africa. Distribution of Common Maize Diseases and Molecular Characterization of Maize Streak Virus in Kenya Alice K. Charles 1, William M. Muiru1, Douglas W. Miano & John W. Kimenju 1 Department of Plant Science and Crop Protection, University of Nairobi, Nairobi, Kenya In Africa, the disease was first reported in Kenya, (South Rift Valley - Bomet and Naivasha districts) in September 2011 although its extent at that point suggested that the disease has been present for some time. By March 2012, the disease was reported at up to 2,100 m asl. Slightly tolerant to Maize Lethal Necrosis (MLN) disease. 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. MAIZE PESTS. In September 2011, a high incidence of a new maize (Zea mays L.) disease was reported at lower elevations (1,900 m asl) in the Longisa division of Bomet County, Southern Rift Valley, Kenya.The disease later spread to the Narok South and North and Naivasha Districts. Downy Mildews Disease 4. Pre-Flowering Stalk Rot Disease 7. Crop residues are removed from the field and then used as fodder, fuel, etc. The agricultural sector is still the backbone of Kenya’s economy and economic development is dependent on agricultural improvement. Symptoms: 1. Chlorotic mottling of the leaves, usually … Smut Diseases 2. Charcoal Rot Disease 10. Gray leaf spot This disease often occurs in humid areas when leaves are exposed to long periods of wetness. Here is a list of seventeen major diseases that are found in maize: 1. The disease is identified by lesions which are small elongated brown-grey spots which grow parallel to the veins. This is a common practice with small-scale farmers. Some common diseases to look out for. Cob Rots Disease 12. ... Kenya Seed Company: Popular varieties from the company for medium altitude zones include: H624, H524, H525, and H526. Black Bundle Disease 11. There are reports of increased incidence of grey leaf spot in minimum tillage systems. blight (Exserohilum turcicum), common rust (Puccinia sorghi), maize streak disease (Maize streak virus, MSV), gray leaf spot (Cercospora zea maydis, (GLS), head smut (Sphacelotheca reiliana) and common smut (Ustilago maydis). Brown Spot Disease 5. Virus Diseases 3. Maize dwarf mosaic virus or Wheat streak mosaic virus). Infestation and damage by pests have been ranked as the third most important constraint upon maize production in semi-arid eastern Kenya after moisture stress and poor soil fertility (Songa et al., 2002). Others varieties include H513, H515, H516, H517, H518, H519, H520, H521, and H522. By October 2012, a study team sent by CIMMYT and the Kenya Agricultural and Livestock Research Organization (KALRO) confirmed the disease to be maize lethal necrosis (MLN). The maturity of 4 months (130-160 days). Among the biotic constraints, foliar diseases cause heavy yield losses thus compromising food security in the country. Twenty maize varieties were also evaluated for their reaction to the different maize diseases in a field experiment CABI The Plantwise Blog Maize lethal necrosis disease on the decline in Kenya CIMMYT Maize Lethal Necrosis disease plant clinics 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… 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. S economy and economic development is dependent on agricultural improvement March 2012, the is... H525, and H522 H624, H524, H525, and H526 agricultural sector is the! Days ) is still the backbone of Kenya poverty line, H520, H521, H522! March 2012, the disease was reported at up to 2,100 m.! 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