Growing Tangerine in Kisii

Soil suitability analysis based on Kisii's nutrient profile

Tangerine can be grown in Kisii County, but the soil scores 50/100 and needs targeted management to reach full potential. At an average pH of 5.21 the soil is moderately acidic, below Tangerine's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen, phosphorus, and potassium — measured at N 1.09 g/kg, P 13.1 mg/kg, K 151 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly clay loam soils suit Tangerine, which favours loam. Tangerine's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Kisii's 50/100 suitability a realistic target here is closer to 6,250 kg/acre (~KES 375,000/acre) unless the constraints above are addressed.