Growing Okra in Trans Nzoia

Soil suitability analysis based on Trans Nzoia's nutrient profile

Trans Nzoia County is a challenging environment for Okra (soil-match score 39/100) and will need significant amendment before planting. At an average pH of 5.93 the soil is slightly acidic to near-neutral, below Okra's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.68 g/kg), phosphorus (27.3 mg/kg) and potassium (213 mg/kg) all meet Okra's requirements, so a maintenance fertilizer programme is enough. The county's predominantly clay loam soils suit Okra, which favours loam. At 1900 m, the county sits above Okra's preferred altitude ceiling of 1300 m, where frost risk and cold nights reduce the crop's productivity. Okra's full potential is about 5,000 kg/acre (~KES 300,000/acre at KES 60/kg), but at Trans Nzoia's 39/100 suitability a realistic target here is closer to 2,438 kg/acre (~KES 146,280/acre) unless the constraints above are addressed.

39Suitability score

Soil & climate match

FactorTrans Nzoia soilOkra needsStatus
pH5.9367.5Adjust
Nitrogen1.68 g/kgmin 0.8 g/kgOK
Phosphorus27.3 mg/kgmin 12 mg/kgOK
Potassium213 mg/kgmin 150 mg/kgOK
Rainfall1,200 mm500–1,200 mmOK
Altitude1,900 m0–1,300 mHigh

Planting calendar

Long Rains

Month 1
Direct Sowing & Basal
Month 2
Top Dressing & Pest Control
Month 3
Continuous Harvest

Short Rains

Month 1
Direct Sowing & Basal
Month 2
Top Dressing
Month 3
Continuous Harvest

Top dressing guide

Product
CAN
Timing
Week 3 and 6
Instruction
Top-dress lightly — excess nitrogen delays pod set.
Bags per Acre
0.4

Economics

Market priceKES 60/kg
Expected yield in Trans Nzoia2,438 kg/acre
Estimated revenueKES 146,280/acre
Adjusted for Trans Nzoia's 39/100 suitability. Under ideal conditions Okra can reach 5,000 kg/acre (~KES 300,000/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(4,500)
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