Growing Onion in Homa Bay

Soil suitability analysis based on Homa Bay's nutrient profile

Homa Bay County is a solid choice for Onion, with a soil-match score of 62/100. At an average pH of 5.27 the soil is moderately acidic, below Onion's preferred 6–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen, phosphorus, and potassium — measured at N 1.05 g/kg, P 13.8 mg/kg, K 147 mg/kg against this crop's high/high/medium demand — so the fertilizer plan below prioritises closing those deficits. Onion prefers sandy loam soils, while Homa Bay is largely clay loam, so drainage and organic-matter management matter more here. Onion's full potential is about 6,000 kg/acre (~KES 420,000/acre at KES 70/kg), but at Homa Bay's 62/100 suitability a realistic target here is closer to 4,650 kg/acre (~KES 325,500/acre) unless the constraints above are addressed.