Growing Turmeric in Nairobi

Soil suitability analysis based on Nairobi's nutrient profile

Turmeric can be grown in Nairobi County, but the soil scores 56/100 and needs targeted management to reach full potential. Local soils average pH 6.85 — neutral and inside the 5.5–7.5 band Turmeric prefers, so no lime is usually required. The main gap is nitrogen — measured at N 1.1 g/kg, P 22.1 mg/kg, K 236 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly clay loam soils suit Turmeric, which favours loam. Turmeric's full potential is about 6,000 kg/acre (~KES 480,000/acre at KES 80/kg), but at Nairobi's 56/100 suitability a realistic target here is closer to 4,200 kg/acre (~KES 336,000/acre) unless the constraints above are addressed.

56Suitability score

Soil & climate match

FactorNairobi soilTurmeric needsStatus
pH6.855.57.5OK
Nitrogen1.1 g/kgmin 1.2 g/kgLow
Phosphorus22.1 mg/kgmin 20 mg/kgOK
Potassium236 mg/kgmin 200 mg/kgOK
Rainfall900 mm1,000–2,000 mmLow
Altitude1,700 m0–1,500 mHigh

Planting calendar

Long Rains

Month 1
Rhizome Planting & Basal
Month 2
Earthing Up & Top Dressing
Month 3
Rhizome Bulking

Short Rains

Month 1
Rhizome Planting & Basal
Month 2
Earthing Up & Top Dressing
Month 3
Rhizome Bulking

Top dressing guide

Product
CAN
Timing
Week 6 and at rhizome bulking
Instruction
Earth up and top-dress at bulking. Add potassium for rhizome size.
Bags per Acre
0.5

Economics

Market priceKES 80/kg
Expected yield in Nairobi4,200 kg/acre
Estimated revenueKES 336,000/acre
Adjusted for Nairobi's 56/100 suitability. Under ideal conditions Turmeric can reach 6,000 kg/acre (~KES 480,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

Fertilizer prices

DAP
KES 3,500(6,500)
CAN
KES 2,875(4,500)
NPK 17:17:17
KES 3,275(5,600)
Urea
KES 3,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag