Growing Oilseed Rape (Canola) in Meru
Soil suitability analysis based on Meru's nutrient profile
Meru County is a challenging environment for Oilseed Rape (Canola) (soil-match score 44/100) and will need significant amendment before planting. At an average pH of 4.88 the soil is strongly acidic, below Oilseed Rape (Canola)'s preferred 5.8–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.22 g/kg), phosphorus (20.3 mg/kg) and potassium (218 mg/kg) all meet Oilseed Rape (Canola)'s requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Oilseed Rape (Canola), which favours loam. Oilseed Rape (Canola)'s full potential is about 1,000 kg/acre (~KES 60,000/acre at KES 60/kg), but at Meru's 44/100 suitability a realistic target here is closer to 550 kg/acre (~KES 33,000/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Meru soil | Oilseed Rape (Canola) needs | Status |
|---|---|---|---|
| pH | 4.88 | 5.8–7.5 | Adjust |
| Nitrogen | 1.22 g/kg | min 1.2 g/kg | OK |
| Phosphorus | 20.3 mg/kg | min 20 mg/kg | OK |
| Potassium | 218 mg/kg | min 150 mg/kg | OK |
| Rainfall | 1,400 mm | 400–900 mm | High |
| Altitude | 1,500 m | 1,500–2,800 m | OK |
Planting calendar
Long Rains
Short Rains
Top dressing guide
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag