Growing Spinach in Samburu

Soil suitability analysis based on Samburu's nutrient profile

Samburu County is a challenging environment for Spinach (soil-match score 18/100) and will need significant amendment before planting. At an average pH of 8.28 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 0.67 g/kg, P 42.1 mg/kg, K 387 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Spinach prefers loam soils, while Samburu is largely sandy, so drainage and organic-matter management matter more here. Samburu receives approximately 350 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 Samburu's 18/100 suitability a realistic target here is closer to 1,800 kg/acre (~KES 45,000/acre) unless the constraints above are addressed.