Growing Tomato in Marsabit

Soil suitability analysis based on Marsabit's nutrient profile

Marsabit County is a challenging environment for Tomato (soil-match score 13/100) and will need significant amendment before planting. At an average pH of 8.22 the soil sits above Tomato's preferred 6–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.52 g/kg, P 37.3 mg/kg, K 420 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. Tomato prefers loam soils, while Marsabit is largely sandy, so drainage and organic-matter management matter more here. Marsabit receives approximately 300 mm/year — well below Tomato's minimum of 600 mm — so supplemental irrigation would be essential for this crop. Tomato's full potential is about 15,000 kg/acre (~KES 750,000/acre at KES 50/kg), but at Marsabit's 13/100 suitability a realistic target here is closer to 2,438 kg/acre (~KES 121,900/acre) unless the constraints above are addressed.