Growing Napier Grass in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Nyandarua County is well suited to Napier Grass, scoring 76/100 on ShambaIQ's soil-match model. Local soils average pH 5.38 — moderately acidic and inside the 5–8 band Napier Grass prefers, so no lime is usually required. Nitrogen (1.28 g/kg), phosphorus (14 mg/kg) and potassium (166 mg/kg) all meet Napier Grass's requirements, so a maintenance fertilizer programme is enough. Napier Grass prefers loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. At current prices (about KES 5/kg) and a typical 15,000 kg/acre yield, a well-managed Napier Grass crop here can gross roughly KES 75,000 per acre.