Growing Capsicum in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Capsicum can be grown in Nyandarua County, but the soil scores 56/100 and needs targeted management to reach full potential. At an average pH of 5.38 the soil is moderately acidic, below Capsicum's preferred 5.5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is phosphorus and potassium — measured at N 1.28 g/kg, P 14 mg/kg, K 166 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. Capsicum prefers loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. Capsicum's full potential is about 6,000 kg/acre (~KES 540,000/acre at KES 90/kg), but at Nyandarua's 56/100 suitability a realistic target here is closer to 4,200 kg/acre (~KES 378,000/acre) unless the constraints above are addressed.