Growing Quinoa in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Quinoa (soil-match score 28/100) and will need significant amendment before planting. Local soils average pH 7.83 — alkaline and inside the 6–8.5 band Quinoa prefers, so no lime is usually required. 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 medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Quinoa prefers loam soils, while Isiolo is largely sandy, so drainage and organic-matter management matter more here. At 900 m, the county sits below Quinoa's preferred altitude range (1500–3000 m), which limits yield potential due to heat stress. Quinoa's full potential is about 700 kg/acre (~KES 105,000/acre at KES 150/kg), but at Isiolo's 28/100 suitability a realistic target here is closer to 245 kg/acre (~KES 36,750/acre) unless the constraints above are addressed.