Growing Leek in Kakamega

Soil suitability analysis based on Kakamega's nutrient profile

Quick answer

Possible but challenging — Kakamega is only marginally suited to Leek. Kakamega's soil (pH 5.63, slightly acidic) gives Leek a suitability score of 50/100. Match fertilizer to Kakamega's nitrogen and phosphorus levels for the best result.

Leek can be grown in Kakamega County, but the soil scores 50/100 and needs targeted management to reach full potential. At an average pH of 5.63 the soil is slightly acidic to near-neutral, below Leek's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen and potassium — measured at N 1.01 g/kg, P 14 mg/kg, K 147 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly clay loam soils suit Leek, which favours loam. On ShambaIQ's soil-match model, Leek is the #66 soil match of the 106 crops we assess for Kakamega County. Leek's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Kakamega's 50/100 suitability a realistic target here is closer to 6,250 kg/acre (~KES 375,000/acre) unless the constraints above are addressed.

Better matched to Kakamega's soil: Soybeans, Rice (Lowland/Paddy), and Sweet Potato — each scores higher on the same soil.

50Suitability score

Soil & climate match

FactorKakamega soilLeek needsStatus
pH5.6367.5Adjust
Nitrogen1.01 g/kgmin 1.2 g/kgLow
Phosphorus14 mg/kgmin 12 mg/kgOK
Potassium147 mg/kgmin 200 mg/kgLow
Rainfall1,900 mm600–1,200 mmHigh
Altitude1,500 m800–2,500 mOK

Planting calendar for Kakamega

Long Rains· MarchMayMain season here

March
Nursery & Transplanting & Basal
April
Earthing Up & Top Dressing
May
Blanching & Harvest

Short Rains· AugustOctober

August
Nursery & Transplanting & Basal
September
Earthing Up & Top Dressing
October
Blanching & Harvest

Top dressing guide

Product
CAN
Timing
Week 4 and week 8
Instruction
Earth up and top-dress to blanch the stems. Steady nitrogen for length.
Bags per acre in Kakamega
0.50.4

Kakamega's nitrogen (1.01 g/kg) is 84% of the 1.2 g/kg Leek needs, so the standard 0.4 bags/acre is raised to 0.5. Split it across two applications to limit leaching.

Economics

Market priceKES 60/kg
Expected yield in Kakamega6,250 kg/acre
Estimated revenueKES 375,000/acre
Adjusted for Kakamega's 50/100 suitability. Under ideal conditions Leek can reach 10,000 kg/acre (~KES 600,000/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(5,700)
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