KEPHIS warns over deadly maize disease as infections hit irrigation schemes

Kenya, May 23, 2026 - The Kenya Plant Health Inspectorate Service (KEPHIS) has raised concern over the continued spread of Maize Lethal Necrosis Disease (MLND), warning that the viral infection is threatening maize farming and certified seed production in several irrigation schemes across the country.

The agency said the disease, caused by a combination of Maize Chlorotic Mottle Virus (MCMV) and Sugarcane Mosaic Virus (SCMV), continues to cause heavy crop losses and poses a risk to national food security.

According to KEPHIS, irrigation areas including Weiwei, Marich, KVDA Weiwei and Katilu have recorded high incidences of the disease, leading to the rejection of some certified seed crops.

“Maize Lethal Necrosis Disease continues to threaten maize farming and seed production in Kenya,” KEPHIS said in a statement.

The agency noted that all certified seed fields must remain free from the viruses to guarantee quality seed production and protect farmers from losses.

As part of efforts to contain the spread, KEPHIS Kitale on May 21 conducted training for seed growers in the Weiwei Irrigation Scheme, where farmers were advised on disease management practices.

The farmers were encouraged to adopt crop rotation and observe a closed season to help break the disease cycle and reduce infections in future planting seasons.

KEPHIS said strengthening farmer awareness and adherence to recommended farming practices remains critical in safeguarding maize production and ensuring sustainable food security.

Maize is Kenya’s staple food crop and a key source of income for millions of households, making the control of seed-borne and viral diseases vital for the country’s agricultural sector.