Growing Quinoa in Isiolo
Soil suitability analysis based on Isiolo's nutrient profile
Generally not ideal — Isiolo is poorly suited to Quinoa. Isiolo's soil (pH 7.83, alkaline) gives Quinoa a suitability score of 28/100. Match fertilizer to Isiolo's nitrogen and phosphorus levels for the best result.
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. On ShambaIQ's soil-match model, Quinoa is the #35 soil match of the 106 crops we assess for Isiolo County. 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.
Better matched to Isiolo's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.
Soil & climate match
| Factor | Isiolo soil | Quinoa needs | Status |
|---|---|---|---|
| pH | 7.83 | 6–8.5 | OK |
| Nitrogen | 0.46 g/kg | min 0.8 g/kg | Low |
| Phosphorus | 37.4 mg/kg | min 12 mg/kg | OK |
| Potassium | 395 mg/kg | min 150 mg/kg | OK |
| Rainfall | 350 mm | 300–800 mm | OK |
| Altitude | 900 m | 1,500–3,000 m | Low |
Planting calendar for Isiolo
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Isiolo's nitrogen (0.46 g/kg) is 57% of the 0.8 g/kg Quinoa needs, so the standard 0.3 bags/acre is raised to 0.5. Split it across two applications to limit leaching.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag