Growing Quinoa in Machakos
Soil suitability analysis based on Machakos's nutrient profile
Possible but challenging — Machakos is only marginally suited to Quinoa. Machakos's soil (pH 7.03, near-neutral) gives Quinoa a suitability score of 48/100. Match fertilizer to Machakos's nitrogen and phosphorus levels for the best result.
Quinoa can be grown in Machakos County, but the soil scores 48/100 and needs targeted management to reach full potential. Local soils average pH 7.03 — neutral and inside the 6–8.5 band Quinoa prefers, so no lime is usually required. Nitrogen (0.82 g/kg), phosphorus (31.4 mg/kg) and potassium (338 mg/kg) all meet Quinoa's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Quinoa, which favours loam. On ShambaIQ's soil-match model, Quinoa is the #78 soil match of the 106 crops we assess for Machakos County. Quinoa's full potential is about 700 kg/acre (~KES 105,000/acre at KES 150/kg), but at Machakos's 48/100 suitability a realistic target here is closer to 420 kg/acre (~KES 63,000/acre) unless the constraints above are addressed.
Better matched to Machakos's soil: Mango, Sisal, and Moringa — each scores higher on the same soil.
Soil & climate match
| Factor | Machakos soil | Quinoa needs | Status |
|---|---|---|---|
| pH | 7.03 | 6–8.5 | OK |
| Nitrogen | 0.82 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 31.4 mg/kg | min 12 mg/kg | OK |
| Potassium | 338 mg/kg | min 150 mg/kg | OK |
| Rainfall | 700 mm | 300–800 mm | OK |
| Altitude | 1,100 m | 1,500–3,000 m | Low |
Planting calendar for Machakos
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Machakos's nitrogen (0.82 g/kg) already meets Quinoa's 0.8 g/kg requirement, so this is a maintenance rate.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag