Growing Lentils in Lamu

Soil suitability analysis based on Lamu's nutrient profile

Quick answer

Generally not ideal — Lamu is poorly suited to Lentils. Lamu's soil (pH 6.31, slightly acidic) gives Lentils a suitability score of 0/100. Match fertilizer to Lamu's nitrogen and phosphorus levels for the best result.

Lamu County is a challenging environment for Lentils (soil-match score 0/100) 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 Lentils prefers, so no lime is usually required. The main gap is phosphorus — measured at N 0.74 g/kg, P 9.6 mg/kg, K 117 mg/kg against this crop's low/medium/low demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Lentils, which favours sandy loam. At 10 m, the county sits below Lentils's preferred altitude range (1200–2400 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Lentils is the #87 soil match of the 106 crops we assess for Lamu County. Lentils's full potential is about 600 kg/acre (~KES 108,000/acre at KES 180/kg), but at Lamu'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 Lamu's soil: Sesame (Simsim), Sorghum, and Cowpeas — each scores higher on the same soil.

0Suitability score

Soil & climate match

FactorLamu soilLentils needsStatus
pH6.315.57.5OK
Nitrogen0.74 g/kgmin 0.5 g/kgOK
Phosphorus9.6 mg/kgmin 12 mg/kgLow
Potassium117 mg/kgmin 100 mg/kgOK
Rainfall600 mm350–800 mmOK
Altitude10 m1,200–2,400 mLow

Recommended seed varieties

Local BrownLowland/Medium 600-1500m
Local · 100-110 days · 4-6 bags/acre
Local landrace; very popular in household consumption; high protein.
Local GreenLowland/Medium 600-1500m
Local · 90-100 days · 5-7 bags/acre
Early maturing; good market demand.

Economics

Market priceKES 180/kg
Expected yield in Lamu0 kg/acre
Estimated revenueKES 0/acre
Adjusted for Lamu's 0/100 suitability. Under ideal conditions Lentils can reach 600 kg/acre (~KES 108,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy Loam

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