Growing Chilies in Laikipia

Soil suitability analysis based on Laikipia's nutrient profile

Laikipia County is a challenging environment for Chilies (soil-match score 32/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly acidic, below Chilies's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.42 g/kg), phosphorus (16.6 mg/kg) and potassium (215 mg/kg) all meet Chilies's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Chilies, which favours sandy loam. At 1700 m, the county sits above Chilies's preferred altitude ceiling of 1200 m, where frost risk and cold nights reduce the crop's productivity. Chilies's full potential is about 2,500 kg/acre (~KES 412,500/acre at KES 165/kg), but at Laikipia's 32/100 suitability a realistic target here is closer to 1,000 kg/acre (~KES 165,000/acre) unless the constraints above are addressed.