Growing Wheat in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Wheat (soil-match score 9/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Wheat's preferred 6–7.5 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 high/high/medium demand — so the fertilizer plan below prioritises closing that deficit. Wheat prefers clay soils, while Isiolo is largely sandy, so drainage and organic-matter management matter more here. At 900 m, the county sits below Wheat's preferred altitude range (1800–3000 m), which limits yield potential due to heat stress. Wheat's full potential is about 2,000 kg/acre (~KES 100,000/acre at KES 50/kg), but at Isiolo's 9/100 suitability a realistic target here is closer to 225 kg/acre (~KES 11,250/acre) unless the constraints above are addressed.