Growing Cotton in Mandera

Soil suitability analysis based on Mandera's nutrient profile

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. At current prices (about KES 68/kg) and a typical 900 kg/acre yield, a well-managed Cotton crop here can gross roughly KES 61,200 per acre.

9Suitability score

Soil match analysis

NutrientMandera 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

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 yield900 kg/acre
Estimated revenueKES 61,200/acre

Preferred textureClay

Fertilizer prices

DAP
KES 2,500(6,500)
CAN
KES 2,500(4,500)
NPK 17:17:17
KES 2,500(5,600)
Urea
KES 2,500(5,500)
Lime
KES 1,500(1,800)

Green = subsidized · (Commercial) per 50kg bag