Growing Kale (Sukuma Wiki) in Laikipia

Soil suitability analysis based on Laikipia's nutrient profile

Kale (Sukuma Wiki) can be grown in Laikipia County, but the soil scores 57/100 and needs targeted management to reach full potential. 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 (1.42 g/kg), phosphorus (16.6 mg/kg) and potassium (215 mg/kg) all meet Kale (Sukuma Wiki)'s requirements, so a maintenance fertilizer programme is enough. Kale (Sukuma Wiki) prefers clay loam soils, while Laikipia is largely sandy loam, so drainage and organic-matter management matter more here. Kale (Sukuma Wiki)'s full potential is about 12,000 kg/acre (~KES 240,000/acre at KES 20/kg), but at Laikipia's 57/100 suitability a realistic target here is closer to 8,550 kg/acre (~KES 171,000/acre) unless the constraints above are addressed.