Growing Tangerine in Garissa

Soil suitability analysis based on Garissa's nutrient profile

Garissa County is a challenging environment for Tangerine (soil-match score 11/100) and will need significant amendment before planting. At an average pH of 7.96 the soil sits above Tangerine's preferred 6–7.5 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. Tangerine 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 Tangerine's minimum of 600 mm — so supplemental irrigation would be essential for this crop. Tangerine's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Garissa's 11/100 suitability a realistic target here is closer to 1,375 kg/acre (~KES 82,500/acre) unless the constraints above are addressed.