Growing Leek in Mandera

Soil suitability analysis based on Mandera's nutrient profile

Quick answer

Generally not ideal — Mandera is poorly suited to Leek. Mandera's soil (pH 8.38, alkaline) gives Leek a suitability score of 0/100. Match fertilizer to Mandera's nitrogen and phosphorus levels for the best result.

Mandera County is a challenging environment for Leek (soil-match score 0/100) and will need significant amendment before planting. At an average pH of 8.38 the soil sits above Leek's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.53 g/kg, P 38.3 mg/kg, K 420 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing that deficit. Leek prefers loam soils, while Mandera is largely sandy, so drainage and organic-matter management matter more here. Mandera receives approximately 180 mm/year — well below Leek's minimum of 600 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Leek is the #105 soil match of the 106 crops we assess for Mandera County. Leek's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Mandera'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 Mandera's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.

0Suitability score

Soil & climate match

FactorMandera soilLeek needsStatus
pH8.3867.5Adjust
Nitrogen0.53 g/kgmin 1.2 g/kgLow
Phosphorus38.3 mg/kgmin 12 mg/kgOK
Potassium420 mg/kgmin 200 mg/kgOK
Rainfall180 mm600–1,200 mmLow
Altitude250 m800–2,500 mLow

Planting calendar for Mandera

Long Rains· MarchMay

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

Short Rains· OctoberDecemberMain season here

October
Nursery & Transplanting & Basal
November
Earthing Up & Top Dressing
December
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 Mandera
0.50.4

Mandera's nitrogen (0.53 g/kg) is 44% 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 Mandera0 kg/acre
Estimated revenueKES 0/acre
Adjusted for Mandera's 0/100 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