Growing Quinoa in Samburu

Soil suitability analysis based on Samburu's nutrient profile

Quick answer

Generally not ideal — Samburu is poorly suited to Quinoa. Samburu's soil (pH 8.28, alkaline) gives Quinoa a suitability score of 25/100. Match fertilizer to Samburu's nitrogen and phosphorus levels for the best result.

Samburu County is a challenging environment for Quinoa (soil-match score 25/100) and will need significant amendment before planting. Local soils average pH 8.28 — alkaline and inside the 6–8.5 band Quinoa prefers, so no lime is usually required. 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 medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Quinoa prefers loam soils, while Samburu is largely sandy, so drainage and organic-matter management matter more here. At 900 m, the county sits below Quinoa's preferred altitude range (1500–3000 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Quinoa is the #38 soil match of the 106 crops we assess for Samburu County. Quinoa's full potential is about 700 kg/acre (~KES 105,000/acre at KES 150/kg), but at Samburu's 25/100 suitability a realistic target here is closer to 219 kg/acre (~KES 32,850/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.

25Suitability score

Soil & climate match

FactorSamburu soilQuinoa needsStatus
pH8.2868.5OK
Nitrogen0.67 g/kgmin 0.8 g/kgLow
Phosphorus42.1 mg/kgmin 12 mg/kgOK
Potassium387 mg/kgmin 150 mg/kgOK
Rainfall350 mm300–800 mmOK
Altitude900 m1,500–3,000 mLow

Planting calendar for Samburu

Long Rains· MarchMay

March
Land Prep & Sowing & Basal
April
Thinning & Top Dressing
May
Grain Fill & Harvest

Short Rains· OctoberDecemberMain season here

October
Land Prep & Sowing & Basal
November
Thinning & Top Dressing
December
Grain Fill & Harvest

Top dressing guide

Product
CAN
Timing
Week 4 to 6
Instruction
Top-dress at branching. Moderate nitrogen; excess causes lodging.
Bags per acre in Samburu
0.50.3

Samburu's nitrogen (0.67 g/kg) is 84% of the 0.8 g/kg Quinoa needs, so the standard 0.3 bags/acre is raised to 0.5. Split it across two applications to limit leaching.

Economics

Market priceKES 150/kg
Expected yield in Samburu219 kg/acre
Estimated revenueKES 32,850/acre
Adjusted for Samburu's 25/100 suitability. Under ideal conditions Quinoa can reach 700 kg/acre (~KES 105,000/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