Growing Spinach in Mandera

Soil suitability analysis based on Mandera's nutrient profile

Mandera County is a challenging environment for Spinach (soil-match score 4/100) and will need significant amendment before planting. At an average pH of 8.38 the soil sits above Spinach's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.53 g/kg, P 38.3 mg/kg, K 420 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Spinach prefers loam soils, while Mandera is largely sandy, so drainage and organic-matter management matter more here. Mandera receives approximately 180 mm/year — well below Spinach's minimum of 600 mm — so supplemental irrigation would be essential for this crop. Spinach's full potential is about 8,000 kg/acre (~KES 200,000/acre at KES 25/kg), but at Mandera's 4/100 suitability a realistic target here is closer to 400 kg/acre (~KES 10,000/acre) unless the constraints above are addressed.