Growing Radish in Kirinyaga

Soil suitability analysis based on Kirinyaga's nutrient profile

Radish can be grown in Kirinyaga County, but the soil scores 58/100 and needs targeted management to reach full potential. At an average pH of 5.31 the soil is moderately acidic, below Radish's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.36 g/kg), phosphorus (12.5 mg/kg) and potassium (177 mg/kg) all meet Radish's requirements, so a maintenance fertilizer programme is enough. Radish prefers sandy loam soils, while Kirinyaga is largely clay, so drainage and organic-matter management matter more here. Radish's full potential is about 8,000 kg/acre (~KES 320,000/acre at KES 40/kg), but at Kirinyaga's 58/100 suitability a realistic target here is closer to 5,800 kg/acre (~KES 232,000/acre) unless the constraints above are addressed.