Growing Chia in Wajir
Soil suitability analysis based on Wajir's nutrient profile
Generally not ideal — Wajir is poorly suited to Chia. Wajir's soil (pH 8.4, alkaline) gives Chia a suitability score of 2/100. Match fertilizer to Wajir's nitrogen and phosphorus levels for the best result.
Wajir County is a challenging environment for Chia (soil-match score 2/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Chia's preferred 6–8 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.52 g/kg), phosphorus (39.3 mg/kg) and potassium (396 mg/kg) all meet Chia's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy soils suit Chia, which favours sandy loam. Wajir receives approximately 200 mm/year — well below Chia's minimum of 300 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Chia is the #61 soil match of the 106 crops we assess for Wajir County. Chia's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Wajir's 2/100 suitability a realistic target here is closer to 10 kg/acre (~KES 1,500/acre) unless the constraints above are addressed.
Better matched to Wajir's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.
Soil & climate match
| Factor | Wajir soil | Chia needs | Status |
|---|---|---|---|
| pH | 8.4 | 6–8 | Adjust |
| Nitrogen | 0.52 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 39.3 mg/kg | min 12 mg/kg | OK |
| Potassium | 396 mg/kg | min 100 mg/kg | OK |
| Rainfall | 200 mm | 300–800 mm | Low |
| Altitude | 250 m | 1,000–2,200 m | Low |
Planting calendar for Wajir
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Wajir's nitrogen (0.52 g/kg) already meets Chia's 0.5 g/kg requirement, so this is a maintenance rate.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag