Growing Potato in Turkana
Soil suitability analysis based on Turkana's nutrient profile
Generally not ideal — Turkana is poorly suited to Potato. Turkana's soil (pH 7.95, alkaline) gives Potato a suitability score of 1/100. Match fertilizer to Turkana's nitrogen and phosphorus levels for the best result.
Turkana County is a challenging environment for Potato (soil-match score 1/100) and will need significant amendment before planting. At an average pH of 7.95 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 0.41 g/kg, P 38.5 mg/kg, K 417 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. Turkana receives approximately 300 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 Turkana's 1/100 suitability a realistic target here is closer to 100 kg/acre (~KES 3,800/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Turkana soil | Potato needs | Status |
|---|---|---|---|
| pH | 7.95 | 4.8–6.5 | Adjust |
| Nitrogen | 0.41 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 38.5 mg/kg | min 20 mg/kg | OK |
| Potassium | 417 mg/kg | min 200 mg/kg | OK |
| Rainfall | 300 mm | 700–1,500 mm | Low |
| Altitude | 400 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