Introduction
Potato farming is a vital source of food and income for thousands of Kenyan households. However, an invisible pest, the Potato Cyst Nematode (PCN), is quietly undermining yields and farmer livelihoods across the country.
PCN are microscopic soil-dwelling worms (Globodera spp.) that attack potato roots, leading to stunted plants, yellowing leaves, and yield losses that can reach up to 80% in heavily infested fields. Worse still, the cysts can survive in the soil for more than 20 years, making the pest extremely difficult to control once established.
Findings from Nyandarua
During a recent visit to farms in the Kipipiri area, visible signs of PCN infestation were observed. Unfortunately, most farmers we interacted with had no knowledge of PCN and its devastating effects.
It was also noted that many farmers rely on farm-saved seed, which could be contributing to the spread of PCN in the county. With limited sensitization and training on PCN in the area, urgent action is needed to raise awareness and promote responsible practices.
What Research Says
Institutions such as ICIPE (International Centre of Insect Physiology and Ecology) and KEPHIS (Kenya Plant Health Inspectorate Service) has confirmed that PCN is now widespread in Kenya’s potato-growing regions.
Farmer Tips to Control PCN
- Use certified, PCN-free seed instead of farm-saved seed.
- Practice crop rotation with non-host crops (e.g., cereals, legumes).
- Clean farm tools and machinery to prevent the spread from infested to clean fields.
- Participate in training and awareness forums organized by NPCK and partners.
Conclusion
PCN is a silent but serious enemy to potato farming in Kenya. Without action, it will continue to erode farmer incomes and national food security. Increased awareness, use of clean seed, and adoption of integrated pest management practices are key to safeguarding potato production. Together, we can turn the tide against PCN.
