Growing Napier Grass in Kisii
Soil suitability analysis based on Kisii's nutrient profile
Yes, with the right inputs — Kisii is moderately suited to Napier Grass. Kisii's soil (pH 5.21, strongly acidic) gives Napier Grass a suitability score of 72/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Kisii County is a solid choice for Napier Grass, with a soil-match score of 72/100. Local soils average pH 5.21 — moderately acidic and inside the 5–8 band Napier Grass prefers, so no lime is usually required. Nitrogen (1.09 g/kg), phosphorus (13.1 mg/kg) and potassium (151 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. On ShambaIQ's soil-match model, Napier Grass is the #21 soil match of the 106 crops we assess for Kisii County. 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 | Kisii soil | Napier Grass needs | Status |
|---|---|---|---|
| pH | 5.21 | 5–8 | OK |
| Nitrogen | 1.09 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 13.1 mg/kg | min 6 mg/kg | OK |
| Potassium | 151 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,500 mm | 800–2,000 mm | OK |
| Altitude | 1,700 m | 0–2,500 m | OK |
Top dressing guide
Kisii's nitrogen (1.09 g/kg) already meets Napier Grass's 0.8 g/kg requirement, so this is a maintenance rate.
Seed varieties for Kisii
2 napier grass varieties are rated for Kisii's altitude (1,700 m) and rainfall (1,500 mm):
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag