Growing Tree Tomato (Tamarillo) in Kitui

Soil suitability analysis based on Kitui's nutrient profile

Kitui County is a challenging environment for Tree Tomato (Tamarillo) (soil-match score 11/100) and will need significant amendment before planting. At an average pH of 7.03 the soil sits above Tree Tomato (Tamarillo)'s preferred 5.8–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.74 g/kg, P 30.5 mg/kg, K 339 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. Kitui receives approximately 500 mm/year — well below Tree Tomato (Tamarillo)'s minimum of 800 mm — so supplemental irrigation would be essential for this crop. Tree Tomato (Tamarillo)'s full potential is about 8,000 kg/acre (~KES 640,000/acre at KES 80/kg), but at Kitui's 11/100 suitability a realistic target here is closer to 1,100 kg/acre (~KES 88,000/acre) unless the constraints above are addressed.