Growing Bambara Nuts in Tana River

Soil suitability analysis based on Tana River's nutrient profile

Bambara Nuts can be grown in Tana River County, but the soil scores 55/100 and needs targeted management to reach full potential. Local soils average pH 6.4 — slightly acidic to near-neutral and inside the 5–6.5 band Bambara Nuts prefers, so no lime is usually required. Nitrogen (1.04 g/kg), phosphorus (8.5 mg/kg) and potassium (108 mg/kg) all meet Bambara Nuts's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy soils suit Bambara Nuts, which favours sandy. At current prices (about KES 150/kg) and a typical 300 kg/acre yield, a well-managed Bambara Nuts crop here can gross roughly KES 45,000 per acre.

55Suitability score

Soil match analysis

NutrientTana River soilBambara Nuts needsStatus
pH6.456.5OK
Nitrogen1.04 g/kgmin 0.5 g/kgOK
Phosphorus8.5 mg/kgmin 6 mg/kgOK
Potassium108 mg/kgmin 100 mg/kgOK

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 yield300 kg/acre
Estimated revenueKES 45,000/acre

Preferred textureSandy

Fertilizer prices

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

Green = subsidized · (Commercial) per 50kg bag