Growing Celery in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Quick answer

Generally not ideal — Isiolo is poorly suited to Celery. Isiolo's soil (pH 7.83, alkaline) gives Celery a suitability score of 13/100. Match fertilizer to Isiolo's nitrogen and phosphorus levels for the best result.

Isiolo County is a challenging environment for Celery (soil-match score 13/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Celery's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.46 g/kg, P 37.4 mg/kg, K 395 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. Celery prefers loam soils, while Isiolo is largely sandy, so drainage and organic-matter management matter more here. Isiolo receives approximately 350 mm/year — well below Celery's minimum of 700 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Celery is the #70 soil match of the 106 crops we assess for Isiolo County. Celery's full potential is about 12,000 kg/acre (~KES 840,000/acre at KES 70/kg), but at Isiolo's 13/100 suitability a realistic target here is closer to 1,950 kg/acre (~KES 136,500/acre) unless the constraints above are addressed.

Better matched to Isiolo's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.

13Suitability score

Soil & climate match

FactorIsiolo soilCelery needsStatus
pH7.8367.5Adjust
Nitrogen0.46 g/kgmin 1.2 g/kgLow
Phosphorus37.4 mg/kgmin 20 mg/kgOK
Potassium395 mg/kgmin 200 mg/kgOK
Rainfall350 mm700–1,400 mmLow
Altitude900 m1,000–2,600 mLow

Planting calendar for Isiolo

Long Rains· MarchMay

March
Nursery & Transplanting & Basal
April
Top Dressing & Weeding
May
Blanching & Harvest

Short Rains· OctoberDecemberMain season here

October
Nursery & Transplanting & Basal
November
Top Dressing & Weeding
December
Blanching & Harvest

Top dressing guide

Product
CAN
Timing
Every 3 weeks
Instruction
Heavy feeder needing constant moisture and nitrogen for crisp stalks.
Bags per acre in Isiolo
0.750.5

Isiolo's nitrogen (0.46 g/kg) is 38% of the 1.2 g/kg Celery needs, so the standard 0.5 bags/acre is raised to 0.75. Split it across two applications to limit leaching.

Economics

Market priceKES 70/kg
Expected yield in Isiolo1,950 kg/acre
Estimated revenueKES 136,500/acre
Adjusted for Isiolo's 13/100 suitability. Under ideal conditions Celery can reach 12,000 kg/acre (~KES 840,000/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