Growing Potato in Kitui
Soil suitability analysis based on Kitui's nutrient profile
Generally not ideal — Kitui is poorly suited to Potato. Kitui's soil (pH 7.03, near-neutral) gives Potato a suitability score of 11/100. Match fertilizer to Kitui's nitrogen and phosphorus levels for the best result.
Kitui County is a challenging environment for Potato (soil-match score 11/100) and will need significant amendment before planting. At an average pH of 7.03 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 0.74 g/kg, P 30.5 mg/kg, K 339 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Potato, which favours sandy loam. Kitui receives approximately 500 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 Kitui's 11/100 suitability a realistic target here is closer to 1,100 kg/acre (~KES 41,800/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Kitui soil | Potato needs | Status |
|---|---|---|---|
| pH | 7.03 | 4.8–6.5 | Adjust |
| Nitrogen | 0.74 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 30.5 mg/kg | min 20 mg/kg | OK |
| Potassium | 339 mg/kg | min 200 mg/kg | OK |
| Rainfall | 500 mm | 700–1,500 mm | Low |
| Altitude | 900 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