Growing Sweet Corn in Kisii

Soil suitability analysis based on Kisii's nutrient profile

Sweet Corn can be grown in Kisii County, but the soil scores 58/100 and needs targeted management to reach full potential. At an average pH of 5.21 the soil is moderately acidic, below Sweet Corn's preferred 5.8–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen and phosphorus — measured at N 1.09 g/kg, P 13.1 mg/kg, K 151 mg/kg against this crop's high/high/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly clay loam soils suit Sweet Corn, which favours loam. Sweet Corn's full potential is about 8,000 kg/acre (~KES 320,000/acre at KES 40/kg), but at Kisii'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.