Growing Tree Tomato (Tamarillo) in Kirinyaga

Soil suitability analysis based on Kirinyaga's nutrient profile

Kirinyaga County is a solid choice for Tree Tomato (Tamarillo), with a soil-match score of 69/100. At an average pH of 5.31 the soil is moderately acidic, below Tree Tomato (Tamarillo)'s preferred 5.8–7 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. Tree Tomato (Tamarillo) prefers loam soils, while Kirinyaga is largely clay, so drainage and organic-matter management matter more here. Tree Tomato (Tamarillo)'s full potential is about 8,000 kg/acre (~KES 640,000/acre at KES 80/kg), but at Kirinyaga's 69/100 suitability a realistic target here is closer to 6,900 kg/acre (~KES 552,000/acre) unless the constraints above are addressed.