Growing Macadamia in Kajiado

Soil suitability analysis based on Kajiado's nutrient profile

Kajiado County is a challenging environment for Macadamia (soil-match score 39/100) and will need significant amendment before planting. At an average pH of 6.55 the soil sits above Macadamia's preferred 4.5–6.5 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.97 g/kg), phosphorus (20.6 mg/kg) and potassium (257 mg/kg) all meet Macadamia's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Macadamia, which favours loam. Kajiado receives approximately 500 mm/year — well below Macadamia's minimum of 700 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Macadamia is the #77 soil match of the 106 crops we assess for Kajiado County. Macadamia's full potential is about 1,800 kg/acre (~KES 198,000/acre at KES 110/kg), but at Kajiado's 39/100 suitability a realistic target here is closer to 878 kg/acre (~KES 96,580/acre) unless the constraints above are addressed.

Better matched to Kajiado's soil: Sorghum, Cowpeas, and Pigeon Peas — each scores higher on the same soil.