Growing Tree Tomato (Tamarillo) in Laikipia

Soil suitability analysis based on Laikipia's nutrient profile

Laikipia County is a challenging environment for Tree Tomato (Tamarillo) (soil-match score 37/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly 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 — measured at N 1.42 g/kg, P 16.6 mg/kg, K 215 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Tree Tomato (Tamarillo), which favours loam. Tree Tomato (Tamarillo)'s full potential is about 8,000 kg/acre (~KES 640,000/acre at KES 80/kg), but at Laikipia's 37/100 suitability a realistic target here is closer to 3,700 kg/acre (~KES 296,000/acre) unless the constraints above are addressed.