Growing Quinoa in Makueni
Soil suitability analysis based on Makueni's nutrient profile
Generally not ideal — Makueni is poorly suited to Quinoa. Makueni's soil (pH 7.5, alkaline) gives Quinoa a suitability score of 39/100. Match fertilizer to Makueni's nitrogen and phosphorus levels for the best result.
Makueni County is a challenging environment for Quinoa (soil-match score 39/100) and will need significant amendment before planting. Local soils average pH 7.5 — alkaline and inside the 6–8.5 band Quinoa prefers, so no lime is usually required. Nitrogen (0.86 g/kg), phosphorus (29.6 mg/kg) and potassium (351 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. At 1000 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 #76 soil match of the 106 crops we assess for Makueni County. Quinoa's full potential is about 700 kg/acre (~KES 105,000/acre at KES 150/kg), but at Makueni's 39/100 suitability a realistic target here is closer to 341 kg/acre (~KES 51,150/acre) unless the constraints above are addressed.
Better matched to Makueni's soil: Lucerne, Mango, and Sisal — each scores higher on the same soil.
Soil & climate match
| Factor | Makueni soil | Quinoa needs | Status |
|---|---|---|---|
| pH | 7.5 | 6–8.5 | OK |
| Nitrogen | 0.86 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 29.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 351 mg/kg | min 150 mg/kg | OK |
| Rainfall | 600 mm | 300–800 mm | OK |
| Altitude | 1,000 m | 1,500–3,000 m | Low |
Planting calendar for Makueni
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Makueni's nitrogen (0.86 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