Growing Potato in Tana River
Soil suitability analysis based on Tana River's nutrient profile
Generally not ideal — Tana River is poorly suited to Potato. Tana River's soil (pH 6.4, slightly acidic) gives Potato a suitability score of 0/100. Match fertilizer to Tana River's nitrogen and phosphorus levels for the best result.
Tana River County is a challenging environment for Potato (soil-match score 0/100) and will need significant amendment before planting. Local soils average pH 6.4 — slightly acidic to near-neutral and inside the 4.8–6.5 band Potato prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 1.04 g/kg, P 8.5 mg/kg, K 108 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy soils suit Potato, which favours sandy loam. Tana River receives approximately 400 mm/year — well below Potato's minimum of 700 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Potato is the #95 soil match of the 106 crops we assess for Tana River County. Potato's full potential is about 8,000 kg/acre (~KES 304,000/acre at KES 38/kg), but at Tana River's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.
Better matched to Tana River's soil: Sorghum, Cowpeas, and Pigeon Peas — each scores higher on the same soil.
Soil & climate match
| Factor | Tana River soil | Potato needs | Status |
|---|---|---|---|
| pH | 6.4 | 4.8–6.5 | OK |
| Nitrogen | 1.04 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 8.5 mg/kg | min 20 mg/kg | Low |
| Potassium | 108 mg/kg | min 200 mg/kg | Low |
| Rainfall | 400 mm | 700–1,500 mm | Low |
| Altitude | 200 m | 1,500–3,000 m | Low |
Planting calendar for Tana River
Long Rains· March–May
Short Rains· October–DecemberMain season here
Dry Season· January–March
Top dressing guide
Tana River's nitrogen (1.04 g/kg) is 87% of the 1.2 g/kg Potato needs, so the standard 1 bag/acre is raised to 1.25. Split it across two applications to limit leaching.
Seed varieties for Tana River
Varieties suited to Tana River's 200 m altitude and 400 mm annual rainfall — 1 of 14 potato varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag