Growing Tree Tomato (Tamarillo) in Machakos
Soil suitability analysis based on Machakos's nutrient profile
Machakos County is a challenging environment for Tree Tomato (Tamarillo) (soil-match score 33/100) 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 0.82 g/kg, P 31.4 mg/kg, K 338 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 Machakos's 33/100 suitability a realistic target here is closer to 3,300 kg/acre (~KES 264,000/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Machakos soil | Tree Tomato (Tamarillo) needs | Status |
|---|---|---|---|
| pH | 7.03 | 5.8–7 | Adjust |
| Nitrogen | 0.82 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 31.4 mg/kg | min 20 mg/kg | OK |
| Potassium | 338 mg/kg | min 200 mg/kg | OK |
| Rainfall | 700 mm | 800–1,800 mm | Low |
| Altitude | 1,100 m | 1,500–2,800 m | Low |
Planting calendar
Long Rains
Short Rains
Top dressing guide
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag