Growing Napier Grass in Kisumu

Soil suitability analysis based on Kisumu's nutrient profile

Quick answer

Yes — Kisumu is well suited to Napier Grass. Kisumu's soil (pH 5.54, slightly acidic) gives Napier Grass a suitability score of 79/100. Match fertilizer to Kisumu's nitrogen and phosphorus levels for the best result.

Kisumu County is well suited to Napier Grass, scoring 79/100 on ShambaIQ's soil-match model. Local soils average pH 5.54 — slightly acidic to near-neutral and inside the 5–8 band Napier Grass prefers, so no lime is usually required. Nitrogen (0.91 g/kg), phosphorus (12.5 mg/kg) and potassium (166 mg/kg) all meet Napier Grass's requirements, so a maintenance fertilizer programme is enough. Napier Grass prefers loam soils, while Kisumu is largely clay, so drainage and organic-matter management matter more here. 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.

79Suitability score

Soil & climate match

FactorKisumu soilNapier Grass needsStatus
pH5.5458OK
Nitrogen0.91 g/kgmin 0.8 g/kgOK
Phosphorus12.5 mg/kgmin 6 mg/kgOK
Potassium166 mg/kgmin 150 mg/kgOK
Rainfall1,200 mm800–2,000 mmOK
Altitude1,150 m0–2,500 mOK

Top dressing guide

Product
CAN
Timing
After each cut
Instruction
Apply after every harvest cut to support rapid regrowth. Critical for maintaining high biomass yield.
Bags per Acre
0.5

Recommended seed varieties

Clone 13Medium/Highland
ICIPE/KALRO · 90-120 days · 10–15 tons/acre
Push-pull trap crop; high biomass; excellent fodder quality.
Kakamega 1Medium
KALRO · perennial days · 9–12.5 tons/acre
High dry matter yield; tolerant to head smut disease.

Economics

Market priceKES 5/kg
Expected yield in Kisumu29,625 kg/acre
Estimated revenueKES 148,125/acre
Adjusted for Kisumu's 79/100 suitability. Under ideal conditions Napier Grass can reach 30,000 kg/acre (~KES 150,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(4,500)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag