Growing Grapes in Tana River
Soil suitability analysis based on Tana River's nutrient profile
Possible but challenging — Tana River is only marginally suited to Grapes. Tana River's soil (pH 6.4, slightly acidic) gives Grapes a suitability score of 48/100. Match fertilizer to Tana River's nitrogen and phosphorus levels for the best result.
Grapes can be grown in Tana River County, but the soil scores 48/100 and needs targeted management to reach full potential. Local soils average pH 6.4 — slightly acidic to near-neutral and inside the 6–7.5 band Grapes prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 1.04 g/kg, P 8.5 mg/kg, K 108 mg/kg against this crop's medium/high/high demand — so the fertilizer plan below prioritises closing those deficits. Grapes prefers loam soils, while Tana River is largely sandy, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Grapes is the #35 soil match of the 106 crops we assess for Tana River County. Grapes's full potential is about 8,000 kg/acre (~KES 1,200,000/acre at KES 150/kg), but at Tana River's 48/100 suitability a realistic target here is closer to 4,800 kg/acre (~KES 720,000/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 | Grapes needs | Status |
|---|---|---|---|
| pH | 6.4 | 6–7.5 | OK |
| Nitrogen | 1.04 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 8.5 mg/kg | min 20 mg/kg | Low |
| Potassium | 108 mg/kg | min 200 mg/kg | Low |
| Rainfall | 400 mm | 500–1,000 mm | Low |
| Altitude | 200 m | 0–1,800 m | OK |
Planting calendar for Tana River
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Tana River's nitrogen (1.04 g/kg) already meets Grapes's 0.8 g/kg requirement, so this is a maintenance rate.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag