Growing Bambara Nuts in Kiambu
Soil suitability analysis based on Kiambu's nutrient profile
Yes, with the right inputs — Kiambu is moderately suited to Bambara Nuts. Kiambu's soil (pH 5.28, strongly acidic) gives Bambara Nuts a suitability score of 65/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Kiambu County is a solid choice for Bambara Nuts, with a soil-match score of 65/100. Local soils average pH 5.28 — moderately acidic and inside the 5–6.5 band Bambara Nuts prefers, so no lime is usually required. Nitrogen (1.01 g/kg), phosphorus (13.7 mg/kg) and potassium (169 mg/kg) all meet Bambara Nuts's requirements, so a maintenance fertilizer programme is enough. Bambara Nuts prefers sandy soils, while Kiambu is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Bambara Nuts is the #55 soil match of the 106 crops we assess for Kiambu County. Bambara Nuts's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Kiambu's 65/100 suitability a realistic target here is closer to 325 kg/acre (~KES 48,750/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Kiambu soil | Bambara Nuts needs | Status |
|---|---|---|---|
| pH | 5.28 | 5–6.5 | OK |
| Nitrogen | 1.01 g/kg | min 0.5 g/kg | OK |
| Phosphorus | 13.7 mg/kg | min 6 mg/kg | OK |
| Potassium | 169 mg/kg | min 100 mg/kg | OK |
| Rainfall | 1,100 mm | 500–800 mm | High |
| Altitude | 1,700 m | 0–1,600 m | High |
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag