Kenya is inching closer to a major agricultural milestone as scientists move toward releasing new potato varieties resistant to Late Blight — a devastating disease that has long haunted farmers and caused massive crop losses across the world.
The breakthrough comes after more than two decades of painstaking research and collaboration between the Kenya Agricultural and Livestock Research Organization (KALRO) and the International Potato Center (CIP), based in Lima, Peru, and Nairobi, Kenya.
Known as the “3R” potatoes — short for three resistance genes — the new varieties were developed to withstand Phytophthora infestans, the notorious pathogen behind Late Blight and the historic Irish Potato Famine. The disease continues to plague farmers globally, often wiping out entire fields within weeks, especially under humid conditions.
Speaking during a recent visit to KALRO’s Potato and Biotech Research sites, scientists Dr. Samson Kamunya and Dr. Moses Nyongesa confirmed that the varieties are performing impressively in trials. “We are in the final stages of regulatory approval, and once cleared by the Kenya Plant Health Inspectorate Service (KEPHIS), we hope to have the 3R potatoes ready for release by 2026,” Dr. Kamunya said.
The new varieties combine high yields, preferred cooking qualities, and robust disease resistance — offering farmers a more reliable and profitable crop. The resistance genes were sourced from wild potato relatives such as Solanum bulbocastanum, which naturally fend off Late Blight. Using biotechnology, these genes were transferred into local varieties favored by Kenyan farmers.
The long-running research effort has been backed by the 2Blades Foundation, Feed the Future, J.R. Simplot Company, and other partners. Their continued support helped sustain the project after the unexpected withdrawal of USAID funding earlier this year.
Late Blight is one of the most destructive crop diseases in history, forcing many African farmers to spend heavily on fungicides. Experts believe the 3R potatoes could drastically reduce pesticide use, lower production costs, and boost food security across East Africa.
With Kenya now leading the charge, the anticipated release of the 3R potatoes marks a hopeful turning point — one that could transform potato farming and help shield millions of livelihoods from the recurring threat of crop failure.
