Growing Potato in Wajir
Soil suitability analysis based on Wajir's nutrient profile
Generally not ideal — Wajir is poorly suited to Potato. Wajir's soil (pH 8.4, alkaline) gives Potato a suitability score of 0/100. Match fertilizer to Wajir's nitrogen and phosphorus levels for the best result.
Wajir County is a challenging environment for Potato (soil-match score 0/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Potato's preferred 4.8–6.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.52 g/kg, P 39.3 mg/kg, K 396 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Potato, which favours sandy loam. Wajir receives approximately 200 mm/year — well below Potato's minimum of 700 mm — so supplemental irrigation would be essential for this crop. Potato's full potential is about 8,000 kg/acre (~KES 304,000/acre at KES 38/kg), but at Wajir's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Wajir soil | Potato needs | Status |
|---|---|---|---|
| pH | 8.4 | 4.8–6.5 | Adjust |
| Nitrogen | 0.52 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 39.3 mg/kg | min 20 mg/kg | OK |
| Potassium | 396 mg/kg | min 200 mg/kg | OK |
| Rainfall | 200 mm | 700–1,500 mm | Low |
| Altitude | 250 m | 1,500–3,000 m | Low |
Planting calendar
Long Rains
Short Rains
Dry Season
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag