Growing Groundnuts in Kirinyaga

Soil suitability analysis based on Kirinyaga's nutrient profile

Kirinyaga County is well suited to Groundnuts, scoring 85/100 on ShambaIQ's soil-match model. Local soils average pH 5.31 — moderately acidic and inside the 5–7 band Groundnuts prefers, so no lime is usually required. Nitrogen (1.36 g/kg), phosphorus (12.5 mg/kg) and potassium (177 mg/kg) all meet Groundnuts's requirements, so a maintenance fertilizer programme is enough. Groundnuts prefers sandy soils, while Kirinyaga is largely clay, so drainage and organic-matter management matter more here. At current prices (about KES 90/kg) and a typical 500 kg/acre yield, a well-managed Groundnuts crop here can gross roughly KES 45,000 per acre.