Growing Turmeric in Lamu
Soil suitability analysis based on Lamu's nutrient profile
Generally not ideal — Lamu is poorly suited to Turmeric. Lamu's soil (pH 6.31, slightly acidic) gives Turmeric a suitability score of 26/100. Match fertilizer to Lamu's nitrogen and phosphorus levels for the best result.
Lamu County is a challenging environment for Turmeric (soil-match score 26/100) and will need significant amendment before planting. Local soils average pH 6.31 — slightly acidic to near-neutral and inside the 5.5–7.5 band Turmeric 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/high demand — so the fertilizer plan below prioritises closing those deficits. Turmeric prefers loam soils, while Lamu is largely sandy, so drainage and organic-matter management matter more here. Lamu receives approximately 600 mm/year — well below Turmeric's minimum of 1000 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Turmeric is the #58 soil match of the 106 crops we assess for Lamu County. Turmeric's full potential is about 6,000 kg/acre (~KES 480,000/acre at KES 80/kg), but at Lamu's 26/100 suitability a realistic target here is closer to 1,950 kg/acre (~KES 156,000/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 | Turmeric needs | Status |
|---|---|---|---|
| pH | 6.31 | 5.5–7.5 | 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 200 mg/kg | Low |
| Rainfall | 600 mm | 1,000–2,000 mm | Low |
| Altitude | 10 m | 0–1,500 m | OK |
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 Turmeric 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