Growing Sweet Orange in Kirinyaga

Soil suitability analysis based on Kirinyaga's nutrient profile

Sweet Orange can be grown in Kirinyaga County, but the soil scores 59/100 and needs targeted management to reach full potential. At an average pH of 5.31 the soil is moderately acidic, below Sweet Orange's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is phosphorus and potassium — measured at N 1.36 g/kg, P 12.5 mg/kg, K 177 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. Sweet Orange prefers loam soils, while Kirinyaga is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sweet Orange is the #68 soil match of the 106 crops we assess for Kirinyaga County. Sweet Orange's full potential is about 12,000 kg/acre (~KES 600,000/acre at KES 50/kg), but at Kirinyaga's 59/100 suitability a realistic target here is closer to 8,850 kg/acre (~KES 442,500/acre) unless the constraints above are addressed.

Better matched to Kirinyaga's soil: Tea, Macadamia, and Pineapple — each scores higher on the same soil.