Growing Oats in Makueni

Soil suitability analysis based on Makueni's nutrient profile

Makueni County is a challenging environment for Oats (soil-match score 21/100) and will need significant amendment before planting. At an average pH of 7.5 the soil sits above Oats's preferred 5.5–7 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.86 g/kg), phosphorus (29.6 mg/kg) and potassium (351 mg/kg) all meet Oats's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Oats, which favours loam. At 1000 m, the county sits below Oats's preferred altitude range (1800–3000 m), which limits yield potential due to heat stress. Oats's full potential is about 1,600 kg/acre (~KES 64,000/acre at KES 40/kg), but at Makueni's 21/100 suitability a realistic target here is closer to 420 kg/acre (~KES 16,800/acre) unless the constraints above are addressed.