Growing Groundnuts in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Tharaka Nithi County is well suited to Groundnuts, scoring 79/100 on ShambaIQ's soil-match model. At an average pH of 4.99 the soil is strongly acidic, below Groundnuts's preferred 5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.23 g/kg), phosphorus (19.6 mg/kg) and potassium (211 mg/kg) all meet Groundnuts's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Groundnuts, which favours sandy. At current prices (about KES 90/kg) and a typical 400 kg/acre yield, a well-managed Groundnuts crop here can gross roughly KES 36,000 per acre.