Growing Oilseed Rape (Canola) in Lamu
Soil suitability analysis based on Lamu's nutrient profile
Generally not ideal — Lamu is poorly suited to Oilseed Rape (Canola). Lamu's soil (pH 6.31, slightly acidic) gives Oilseed Rape (Canola) a suitability score of 0/100. Match fertilizer to Lamu's nitrogen and phosphorus levels for the best result.
Lamu County is a challenging environment for Oilseed Rape (Canola) (soil-match score 0/100) and will need significant amendment before planting. Local soils average pH 6.31 — slightly acidic to near-neutral and inside the 5.8–7.5 band Oilseed Rape (Canola) prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.74 g/kg, P 9.6 mg/kg, K 117 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 Lamu is largely sandy, so drainage and organic-matter management matter more here. At 10 m, the county sits below Oilseed Rape (Canola)'s preferred altitude range (1500–2800 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Oilseed Rape (Canola) is the #93 soil match of the 106 crops we assess for Lamu County. Oilseed Rape (Canola)'s full potential is about 1,000 kg/acre (~KES 60,000/acre at KES 60/kg), but at Lamu's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.
Better matched to Lamu's soil: Sesame (Simsim), Sorghum, and Cowpeas — each scores higher on the same soil.
Soil & climate match
| Factor | Lamu soil | Oilseed Rape (Canola) needs | Status |
|---|---|---|---|
| pH | 6.31 | 5.8–7.5 | OK |
| Nitrogen | 0.74 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 9.6 mg/kg | min 20 mg/kg | Low |
| Potassium | 117 mg/kg | min 150 mg/kg | Low |
| Rainfall | 600 mm | 400–900 mm | OK |
| Altitude | 10 m | 1,500–2,800 m | Low |
Planting calendar for Lamu
Long Rains· April–JuneMain season here
Short Rains· November–January
Top dressing guide
Lamu's nitrogen (0.74 g/kg) is 62% of the 1.2 g/kg Oilseed Rape (Canola) needs, so the standard 0.5 bags/acre is raised to 0.75. Split it across two applications to limit leaching.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag