Growing Coconuts in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Tharaka Nithi County is a challenging environment for Coconuts (soil-match score 11/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly acidic, below Coconuts's preferred 5.5–8 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 Coconuts's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Coconuts, which favours sandy. At 1100 m, the county sits above Coconuts's preferred altitude ceiling of 600 m, where frost risk and cold nights reduce the crop's productivity. At current prices (about KES 22/kg) and a typical 2,500 kg/acre yield, a well-managed Coconuts crop here can gross roughly KES 55,000 per acre.