Growing Kale (Sukuma Wiki) in Kwale

Soil suitability analysis based on Kwale's nutrient profile

Kwale County is a challenging environment for Kale (Sukuma Wiki) (soil-match score 12/100) and will need significant amendment before planting. Local soils average pH 6.76 — neutral and inside the 5–7 band Kale (Sukuma Wiki) prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.93 g/kg, P 9.8 mg/kg, K 131 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy loam soils suit Kale (Sukuma Wiki), which favours clay loam. At 200 m, the county sits below Kale (Sukuma Wiki)'s preferred altitude range (500–2500 m), which limits yield potential due to heat stress. 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.