Growing Oilseed Rape (Canola) in Kisumu

Soil suitability analysis based on Kisumu's nutrient profile

Kisumu County is a challenging environment for Oilseed Rape (Canola) (soil-match score 32/100) and will need significant amendment before planting. At an average pH of 5.54 the soil is slightly acidic to near-neutral, below Oilseed Rape (Canola)'s preferred 5.8–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen and phosphorus — measured at N 0.91 g/kg, P 12.5 mg/kg, K 166 mg/kg against this crop's high/high/medium demand — so the fertilizer plan below prioritises closing those deficits. Oilseed Rape (Canola) prefers loam soils, while Kisumu is largely clay, so drainage and organic-matter management matter more here. Oilseed Rape (Canola)'s full potential is about 1,000 kg/acre (~KES 60,000/acre at KES 60/kg), but at Kisumu's 32/100 suitability a realistic target here is closer to 400 kg/acre (~KES 24,000/acre) unless the constraints above are addressed.