Growing Basil in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Basil can be grown in Nyandarua County, but the soil scores 58/100 and needs targeted management to reach full potential. At an average pH of 5.38 the soil is moderately acidic, below Basil's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.28 g/kg), phosphorus (14 mg/kg) and potassium (166 mg/kg) all meet Basil's requirements, so a maintenance fertilizer programme is enough. Basil prefers loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. Basil's full potential is about 4,000 kg/acre (~KES 480,000/acre at KES 120/kg), but at Nyandarua's 58/100 suitability a realistic target here is closer to 2,900 kg/acre (~KES 348,000/acre) unless the constraints above are addressed.