Growing Oats in Siaya

Soil suitability analysis based on Siaya's nutrient profile

Siaya County is a challenging environment for Oats (soil-match score 31/100) and will need significant amendment before planting. At an average pH of 5.33 the soil is moderately acidic, below Oats's preferred 5.5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is potassium — measured at N 1.2 g/kg, P 12.1 mg/kg, K 134 mg/kg against this crop's medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly clay loam soils suit Oats, which favours loam. At 1200 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 Siaya's 31/100 suitability a realistic target here is closer to 620 kg/acre (~KES 24,800/acre) unless the constraints above are addressed.