• KALRO/CIMMYT MLN Screening Facility Naivasha, Kenya
  • MLN Resources and Information for Africa
  • USAID / CIMMYT Project: Maize Lethal Necrosis Diagnostics and Prevention of Seed Transmission
  • Development of new MLN tolerant / resistant germplasm
  • Scientists interacting at the MLN Screening Site, Naivasha
  • Farmer's field infected with MLN - Detected on a field survey
  • MLN Artificial Inoculation

Latest Updates

  • New cycle of maize lethal necrosis germplasm screening to begin at Kenya site in May 2017

    Partners are invited to send germplasm for the first screening activity for the 2017A planting cycle set to begin in May 2017 at the joint Kenya Agricultural and Livestock Research Organization (KALRO)–International Maize and Wheat Improvement Center (CIMMYT) maize lethal necrosis (MLN) artificial inoculation screening site at Naivasha, Kenya. Read More

  • First planting season begins at the Zimbabwe Quarantine site

    The Maize Lethal Necrosis (MLN) Quarantine Facility at Mazowe, Zimbabwe has begun its operations. The first seed nursery with 13, 239 germplasm entries that arrived from Kenya have been planted for safe seed multiplication. After three weeks of continuous rain in the region, 1.6 hectares of land was planted successfully. Personnel have been trained to conduct activities at the quarantine facility.

  • Stakeholders adopt procedures for production and supply of disease - free seed in the value chain

    On November 30, 2016, the African Agricultural Technology Foundation (AATF) and Alliance for a Green Revolution in Africa (AGRA) conducted a workshop on production and supply of maize seed that is free from Maize Lethal Necrosis in breeder, foundation and certified seed value chain. The objective of the workshop was to discuss and harmonize the Standard Operating Practices (SOPs) to be implemented for production and distribution of MLN free seed. During the workshop, a follow up to the meeting held on May 12-14, 2015 in Nairobi, participants harmonized the SOPs for MLN Management, listened to presentations on seed production and MLN management and shared experience on MLN management and control in Uganda and Rwanda. During the Nairobi meeting, participants deliberated on ...

  • First report of Maize Chlorotic Mottle Virus (MCMV) in Spain

    A new report published in the journal Plant Disease by M.A. Achon and co-authors from the Universidad de Lleida Rovira Roure highlights the first detection of MCMV in Spain. Samples from a range of grass weeds and maize were collected in 2014 and 2015 from north-eastern Spain and tested for the presence of maize chlorotic mottle virus (MCMV), Maize dwarf mosaic virus (MDMV) and Sugarcane mosaic virus (SCMV). Read More

  • Three major commercial maize seed exporting countries in southern Africa found free from maize lethal necrosis

    NAIROBI, Kenya (CIMMYT) – Three major commercial maize-growing and seed exporting countries in southern Africa were found to be so far free from the deadly maize lethal necrosis (MLN) disease. MLN surveillance efforts undertaken by national plant protection organizations (NPPOs) in Malawi, Zambia and Zimbabwe in 2016 have so far revealed no incidence of MLN, including the most important causative agent, maize chlorotic mottle virus (MCMV). Read More

  • Combating spread of MLN in Africa poses unique but surmountable challenges, a seed health specialist says

    NAIROBI, Kenya (CIMMYT) – The maize lethal necrosis (MLN) disease poses a major concern to researchers, seed companies and farmers in sub-Saharan Africa (SSA). The impact of MLN is massive in the affected countries, especially at the household level for smallholder farmers who can experience up to 100 percent yield loss. Read More