Growing Bambara Nuts in Wajir

Soil suitability analysis based on Wajir's nutrient profile

Wajir County is a challenging environment for Bambara Nuts (soil-match score 8/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Bambara Nuts's preferred 5–6.5 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.52 g/kg), phosphorus (39.3 mg/kg) and potassium (396 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. Wajir receives approximately 200 mm/year — well below Bambara Nuts's minimum of 500 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Bambara Nuts is the #26 soil match of the 106 crops we assess for Wajir County. Bambara Nuts's full potential is about 400 kg/acre (~KES 60,000/acre at KES 150/kg), but at Wajir's 8/100 suitability a realistic target here is closer to 40 kg/acre (~KES 6,000/acre) unless the constraints above are addressed.

Better matched to Wajir's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.