Growing Bambara Nuts in Bomet

Soil suitability analysis based on Bomet's nutrient profile

Quick answer

Generally not ideal — Bomet is poorly suited to Bambara Nuts. Bomet's soil (pH 6.02, slightly acidic) gives Bambara Nuts a suitability score of 37/100. Match fertilizer to Bomet's nitrogen and phosphorus levels for the best result.

Bomet County is a challenging environment for Bambara Nuts (soil-match score 37/100) and will need significant amendment before planting. Local soils average pH 6.02 — slightly acidic to near-neutral and inside the 5–6.5 band Bambara Nuts prefers, so no lime is usually required. Nitrogen (1.38 g/kg), phosphorus (23.6 mg/kg) and potassium (237 mg/kg) all meet Bambara Nuts's requirements, so a maintenance fertilizer programme is enough. Bambara Nuts prefers sandy soils, while Bomet is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Bambara Nuts is the #98 soil match of the 106 crops we assess for Bomet County. Bambara Nuts's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Bomet's 37/100 suitability a realistic target here is closer to 185 kg/acre (~KES 27,750/acre) unless the constraints above are addressed.

Better matched to Bomet's soil: Wambugu Apples, Kale (Sukuma Wiki), and Garden Peas — each scores higher on the same soil.

37Suitability score

Soil & climate match

FactorBomet soilBambara Nuts needsStatus
pH6.0256.5OK
Nitrogen1.38 g/kgmin 0.5 g/kgOK
Phosphorus23.6 mg/kgmin 6 mg/kgOK
Potassium237 mg/kgmin 100 mg/kgOK
Rainfall1,500 mm500–800 mmHigh
Altitude1,900 m0–1,600 mHigh

Recommended seed varieties

Local CreamLowland/Medium 0-1600m
Local · 120-150 days · 4-6 bags/acre
Drought resistant; pods develop underground; high protein and soil building.
Local RedLowland/Medium 0-1600m
Local · 130-160 days · 3-5 bags/acre
Highly nutritious; rich in iron; excellent drought tolerance.

Economics

Market priceKES 150/kg
Expected yield in Bomet185 kg/acre
Estimated revenueKES 27,750/acre
Adjusted for Bomet's 37/100 suitability. Under ideal conditions Bambara Nuts can reach 400 kg/acre (~KES 60,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy

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