Growing Lettuce in Samburu

Soil suitability analysis based on Samburu's nutrient profile

Quick answer

Generally not ideal — Samburu is poorly suited to Lettuce. Samburu's soil (pH 8.28, alkaline) gives Lettuce a suitability score of 17/100. Match fertilizer to Samburu's nitrogen and phosphorus levels for the best result.

Samburu County is a challenging environment for Lettuce (soil-match score 17/100) and will need significant amendment before planting. At an average pH of 8.28 the soil sits above Lettuce's preferred 6–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.67 g/kg, P 42.1 mg/kg, K 387 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Lettuce prefers loam soils, while Samburu is largely sandy, so drainage and organic-matter management matter more here. Samburu receives approximately 350 mm/year — well below Lettuce's minimum of 600 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Lettuce is the #56 soil match of the 106 crops we assess for Samburu County. Lettuce's full potential is about 7,000 kg/acre (~KES 350,000/acre at KES 50/kg), but at Samburu's 17/100 suitability a realistic target here is closer to 1,488 kg/acre (~KES 74,400/acre) unless the constraints above are addressed.

Better matched to Samburu's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.

17Suitability score

Soil & climate match

FactorSamburu soilLettuce needsStatus
pH8.2867Adjust
Nitrogen0.67 g/kgmin 1.2 g/kgLow
Phosphorus42.1 mg/kgmin 12 mg/kgOK
Potassium387 mg/kgmin 150 mg/kgOK
Rainfall350 mm600–1,200 mmLow
Altitude900 m800–2,500 mOK

Planting calendar for Samburu

Long Rains· MarchMay

March
Nursery & Transplanting
April
Top Dressing & Weeding
May
Harvest

Short Rains· OctoberDecemberMain season here

October
Direct Sowing & Basal
November
Thinning & Top Dressing
December
Harvest

Top dressing guide

Product
CAN
Timing
Week 2 and 4 after transplanting
Instruction
Light feeder — split into two small applications to avoid bitterness.
Bags per acre in Samburu
0.50.3

Samburu's nitrogen (0.67 g/kg) is 56% of the 1.2 g/kg Lettuce needs, so the standard 0.3 bags/acre is raised to 0.5. Split it across two applications to limit leaching.

Economics

Market priceKES 50/kg
Expected yield in Samburu1,488 kg/acre
Estimated revenueKES 74,400/acre
Adjusted for Samburu's 17/100 suitability. Under ideal conditions Lettuce can reach 7,000 kg/acre (~KES 350,000/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