Growing Turmeric in Makueni
Soil suitability analysis based on Makueni's nutrient profile
Generally not ideal — Makueni is poorly suited to Turmeric. Makueni's soil (pH 7.5, alkaline) gives Turmeric a suitability score of 26/100. Match fertilizer to Makueni's nitrogen and phosphorus levels for the best result.
Makueni County is a challenging environment for Turmeric (soil-match score 26/100) and will need significant amendment before planting. Local soils average pH 7.5 — alkaline and inside the 5.5–7.5 band Turmeric prefers, so no lime is usually required. The main gap is nitrogen — measured at N 0.86 g/kg, P 29.6 mg/kg, K 351 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Turmeric, which favours loam. Makueni 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 #81 soil match of the 106 crops we assess for Makueni County. Turmeric's full potential is about 6,000 kg/acre (~KES 480,000/acre at KES 80/kg), but at Makueni'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 Makueni's soil: Lucerne, Mango, and Sisal — each scores higher on the same soil.
Soil & climate match
| Factor | Makueni soil | Turmeric needs | Status |
|---|---|---|---|
| pH | 7.5 | 5.5–7.5 | OK |
| Nitrogen | 0.86 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 29.6 mg/kg | min 20 mg/kg | OK |
| Potassium | 351 mg/kg | min 200 mg/kg | OK |
| Rainfall | 600 mm | 1,000–2,000 mm | Low |
| Altitude | 1,000 m | 0–1,500 m | OK |
Planting calendar for Makueni
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Makueni's nitrogen (0.86 g/kg) is 72% 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