Growing Kale (Sukuma Wiki) in Tharaka Nithi

Soil suitability analysis based on Tharaka Nithi's nutrient profile

Tharaka Nithi County is well suited to Kale (Sukuma Wiki), scoring 78/100 on ShambaIQ's soil-match model. At an average pH of 4.99 the soil is strongly acidic, below Kale (Sukuma Wiki)'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 Kale (Sukuma Wiki)'s requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Kale (Sukuma Wiki), which favours clay loam. At current prices (about KES 20/kg) and a typical 5,000 kg/acre yield, a well-managed Kale (Sukuma Wiki) crop here can gross roughly KES 100,000 per acre.