Growing Napier Grass in Vihiga
Soil suitability analysis based on Vihiga's nutrient profile
Yes — Vihiga is well suited to Napier Grass. Vihiga's soil (pH 5.62, slightly acidic) gives Napier Grass a suitability score of 81/100. Match fertilizer to Vihiga's nitrogen and phosphorus levels for the best result.
Vihiga County is well suited to Napier Grass, scoring 81/100 on ShambaIQ's soil-match model. Local soils average pH 5.62 — slightly acidic to near-neutral and inside the 5–8 band Napier Grass prefers, so no lime is usually required. Nitrogen (1.02 g/kg), phosphorus (14.8 mg/kg) and potassium (164 mg/kg) all meet Napier Grass's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Napier Grass, which favours loam. At current prices (about KES 5/kg) and a typical 30,000 kg/acre yield, a well-managed Napier Grass crop here can gross roughly KES 150,000 per acre.
Soil & climate match
| Factor | Vihiga soil | Napier Grass needs | Status |
|---|---|---|---|
| pH | 5.62 | 5–8 | OK |
| Nitrogen | 1.02 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 14.8 mg/kg | min 6 mg/kg | OK |
| Potassium | 164 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,800 mm | 800–2,000 mm | OK |
| Altitude | 1,700 m | 0–2,500 m | OK |
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag