Growing Tomato in Garissa

Soil suitability analysis based on Garissa's nutrient profile

Garissa County is a challenging environment for Tomato (soil-match score 10/100) and will need significant amendment before planting. At an average pH of 7.96 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 0.61 g/kg, P 37.7 mg/kg, K 407 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. Tomato prefers loam soils, while Garissa is largely sandy, so drainage and organic-matter management matter more here. Garissa receives approximately 250 mm/year — well below Tomato's minimum of 600 mm — so supplemental irrigation would be essential for this crop. At current prices (about KES 40/kg) and a typical 5,000 kg/acre yield, a well-managed Tomato crop here can gross roughly KES 200,000 per acre.