Kinangop’s Smart Battle Against Snails and Slugs

By Veronicah Wamiti

Nestled in the heart of Nyandarua County, Kinangop is famed for its lush farmlands and thriving crops from peas and carrots to potatoes,
cabbage, and maize. But behind this productivity lies a quiet battle that farmers have fought for years: a battle against snails and slugs. These tiny, slow-moving pests thrive in Kinangop’s cool climate and have long been responsible for significant crop losses, silently eating into farmers’ yields and incomes.

For years, limited information and the pests’ sporadic nature made effective control difficult. Close crop spacing and frequent rains provided perfect breeding conditions. Now, through partnerships between Biovision Africa Trust’s Outreach staff, TOF Magazine, and radio programmes, farmers are gaining knowledge and practical tools to manage snails and slugs.

Biological Control
Instead of turning to chemicals immediately, many farmers have discovered the power of natural predators. Safari ants, ducks, and chickens help to keep snail and slug numbers down. “We lure safari ants by placing bones or food scraps in the fields,” says one farmer.
It’s a clever, low-cost, and environment friendly way of controlling the pests.

Cultural Practices
Prevention begins with good farming habits. Farmers have embraced practices such as:

• Preparing fine tilth before planting
• Thinning crops properly
• Using light mulch
• Keeping fields clean
• Opting for drip irrigation instead of sprinklers.

Tilling the land exposes snail eggs to sunlight, drying them out before they hatch. Manure, when applied well, strengthens plants, helping them recover faster from any pest damage. Together, these cultural methods reduce breeding grounds for pests and boost crop resilience.

Physical Control
In the early mornings and late afternoons when snails and slugs are most active, farmers can be seen handpicking and destroying the pests or their eggs. Some set beer traps, taking advantage of the pests’ attraction to yeast, while others plant herbs and spices such as rosemary, mint, thyme, and onions between their crops. The intense aromas repel snails and slugs naturally, making intercropping both a pest management and value-adding practice.

Chemical Control
Where needed, farmers use copper-based molluscicides, which are approved for organic farming. These are applied carefully and sparingly,
ensuring minimal chemical use while keeping the environment and consumers safe.

Integrated Pest Management (IPM)
At the core of Kinangop’s success is Integrated Pest Management (IPM), a strategy that blends cultural, physical, biological, and chemical methods in a coordinated way.

IPM focuses on prevention, monitoring, and intervention only when necessary. By understanding the farm ecosystem and acting early, farmers reduce the need for drastic control measures later.

vwamiti@biovisionafrica.org