Growing Yams in Bomet

Soil suitability analysis based on Bomet's nutrient profile

Quick answer

Yes — Bomet is well suited to Yams. Bomet's soil (pH 6.02, slightly acidic) gives Yams a suitability score of 84/100. Match fertilizer to Bomet's nitrogen and phosphorus levels for the best result.

Bomet County is well suited to Yams, scoring 84/100 on ShambaIQ's soil-match model. Local soils average pH 6.02 — slightly acidic to near-neutral and inside the 5.5–6.5 band Yams prefers, so no lime is usually required. Nitrogen (1.38 g/kg), phosphorus (23.6 mg/kg) and potassium (237 mg/kg) all meet Yams's requirements, so a maintenance fertilizer programme is enough. Yams prefers sandy loam soils, while Bomet is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Yams is the #31 soil match of the 106 crops we assess for Bomet County. At current prices (about KES 80/kg) and a typical 7,000 kg/acre yield, a well-managed Yams crop here can gross roughly KES 560,000 per acre.

84Suitability score

Soil & climate match

FactorBomet soilYams needsStatus
pH6.025.56.5OK
Nitrogen1.38 g/kgmin 0.8 g/kgOK
Phosphorus23.6 mg/kgmin 12 mg/kgOK
Potassium237 mg/kgmin 200 mg/kgOK
Rainfall1,500 mm1,200–1,800 mmOK
Altitude1,900 m0–1,800 mHigh

Recommended seed varieties

Local White (Nyandarua/Meru)Medium/Highland 1000-1800m
Local · 240-300 days · 2.5–3.5 tons/acre
Traditional tuber crop; highly valued for food security; propagated via tuber sets.
Local PurpleMedium/Highland 1000-1800m
Local · 270-330 days · 2–3 tons/acre
Vigorous climbing vine; highly nutritious tuber.

Economics

Market priceKES 80/kg
Expected yield 7,000 kg/acre
Estimated revenueKES 560,000/acre

Preferred textureSandy Loam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(5,700)
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