Growing Cotton in Mandera

Soil suitability analysis based on Mandera's nutrient profile

Quick answer

Generally not ideal — Mandera is poorly suited to Cotton. Mandera's soil (pH 8.38, alkaline) gives Cotton a suitability score of 9/100. Match fertilizer to Mandera's nitrogen and phosphorus levels for the best result.

Mandera County is a challenging environment for Cotton (soil-match score 9/100) and will need significant amendment before planting. At an average pH of 8.38 the soil sits above Cotton's preferred 5.8–8 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 medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Cotton prefers clay soils, while Mandera is largely sandy, so drainage and organic-matter management matter more here. Mandera receives approximately 180 mm/year — well below Cotton's minimum of 450 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Cotton is the #15 soil match of the 106 crops we assess for Mandera County. Cotton's full potential is about 900 kg/acre (~KES 61,200/acre at KES 68/kg), but at Mandera's 9/100 suitability a realistic target here is closer to 101 kg/acre (~KES 6,868/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.

9Suitability score

Soil & climate match

FactorMandera soilCotton needsStatus
pH8.385.88Adjust
Nitrogen0.53 g/kgmin 0.8 g/kgLow
Phosphorus38.3 mg/kgmin 12 mg/kgOK
Potassium420 mg/kgmin 150 mg/kgOK
Rainfall180 mm450–1,200 mmLow
Altitude250 m0–1,500 mOK

Top dressing guide

Product
CAN
Timing
Week 4–6 after emergence
Instruction
Apply at squaring stage for boll development.
Bags per Acre
0.5

Recommended seed varieties

KSA 81MDryland/Medium
KALRO · 150-180 days · 10-15 bags/acre
Medium staple; adapted to western Kenya conditions.
HART 89MDryland
KALRO · 140-170 days · 8-12 bags/acre
Good lint quality; tolerant to bacterial blight.

Economics

Market priceKES 68/kg
Expected yield in Mandera101 kg/acre
Estimated revenueKES 6,868/acre
Adjusted for Mandera's 9/100 suitability. Under ideal conditions Cotton can reach 900 kg/acre (~KES 61,200/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureClay

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