Growing Turmeric in Trans Nzoia

Soil suitability analysis based on Trans Nzoia's nutrient profile

Turmeric can be grown in Trans Nzoia County, but the soil scores 54/100 and needs targeted management to reach full potential. Local soils average pH 5.93 — slightly acidic to near-neutral and inside the 5.5–7.5 band Turmeric prefers, so no lime is usually required. Nitrogen (1.68 g/kg), phosphorus (27.3 mg/kg) and potassium (213 mg/kg) all meet Turmeric's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Turmeric, which favours loam. At 1900 m, the county sits above Turmeric's preferred altitude ceiling of 1500 m, where frost risk and cold nights reduce the crop's productivity. Turmeric's full potential is about 6,000 kg/acre (~KES 480,000/acre at KES 80/kg), but at Trans Nzoia's 54/100 suitability a realistic target here is closer to 4,050 kg/acre (~KES 324,000/acre) unless the constraints above are addressed.