Growing Banana in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Tharaka Nithi County is a challenging environment for Banana (soil-match score 43/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly acidic, below Banana'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 Banana's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Banana, which favours loam. At current prices (about KES 12/kg) and a typical 7,500 kg/acre yield, a well-managed Banana crop here can gross roughly KES 90,000 per acre.