Growing Okra in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Quick answer

Generally not ideal — Nyandarua is poorly suited to Okra. Nyandarua's soil (pH 5.38, strongly acidic) gives Okra a suitability score of 22/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Nyandarua County is a challenging environment for Okra (soil-match score 22/100) and will need significant amendment before planting. At an average pH of 5.38 the soil is moderately acidic, below Okra's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.28 g/kg), phosphorus (14 mg/kg) and potassium (166 mg/kg) all meet Okra's requirements, so a maintenance fertilizer programme is enough. Okra prefers loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. At 2300 m, the county sits above Okra's preferred altitude ceiling of 1300 m, where frost risk and cold nights reduce the crop's productivity. On ShambaIQ's soil-match model, Okra is the #98 soil match of the 106 crops we assess for Nyandarua County. Okra's full potential is about 5,000 kg/acre (~KES 300,000/acre at KES 60/kg), but at Nyandarua's 22/100 suitability a realistic target here is closer to 1,375 kg/acre (~KES 82,500/acre) unless the constraints above are addressed.

Better matched to Nyandarua's soil: Tea, Pyrethrum, and Potato — each scores higher on the same soil.

22Suitability score

Soil & climate match

FactorNyandarua soilOkra needsStatus
pH5.3867.5Adjust
Nitrogen1.28 g/kgmin 0.8 g/kgOK
Phosphorus14 mg/kgmin 12 mg/kgOK
Potassium166 mg/kgmin 150 mg/kgOK
Rainfall1,100 mm500–1,200 mmOK
Altitude2,300 m0–1,300 mHigh

Planting calendar for Nyandarua

Long Rains· MarchMayMain season here

March
Direct Sowing & Basal
April
Top Dressing & Pest Control
May
Continuous Harvest

Short Rains· OctoberDecember

October
Direct Sowing & Basal
November
Top Dressing
December
Continuous Harvest

Top dressing guide

Product
CAN
Timing
Week 3 and 6
Instruction
Top-dress lightly — excess nitrogen delays pod set.
Bags per acre in Nyandarua
0.50.4

Nyandarua's nitrogen (1.28 g/kg) already meets Okra's 0.8 g/kg requirement, so this is a maintenance rate.

Economics

Market priceKES 60/kg
Expected yield in Nyandarua1,375 kg/acre
Estimated revenueKES 82,500/acre
Adjusted for Nyandarua's 22/100 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(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