Growing Soybeans in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Soybeans (soil-match score 20/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Soybeans's preferred 5–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.46 g/kg, P 37.4 mg/kg, K 395 mg/kg against this crop's low/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Soybeans prefers loam soils, while Isiolo is largely sandy, so drainage and organic-matter management matter more here. Isiolo receives approximately 350 mm/year — well below Soybeans's minimum of 600 mm — so supplemental irrigation would be essential for this crop. At current prices (about KES 75/kg) and a typical 550 kg/acre yield, a well-managed Soybeans crop here can gross roughly KES 41,250 per acre.