Growing Macadamia in Kilifi

Soil suitability analysis based on Kilifi's nutrient profile

Kilifi County is a challenging environment for Macadamia (soil-match score 2/100) and will need significant amendment before planting. Local soils average pH 6.24 — slightly acidic to near-neutral and inside the 4.5–6.5 band Macadamia prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 0.8 g/kg, P 11 mg/kg, K 109 mg/kg against this crop's medium/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy loam soils suit Macadamia, which favours loam. At 150 m, the county sits below Macadamia's preferred altitude range (900–2100 m), which limits yield potential due to heat stress. Macadamia's full potential is about 1,800 kg/acre (~KES 198,000/acre at KES 110/kg), but at Kilifi's 2/100 suitability a realistic target here is closer to 45 kg/acre (~KES 4,950/acre) unless the constraints above are addressed.