Growing Parsley in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Quick answer

Generally not ideal — Isiolo is poorly suited to Parsley. Isiolo's soil (pH 7.83, alkaline) gives Parsley a suitability score of 21/100. Match fertilizer to Isiolo's nitrogen and phosphorus levels for the best result.

Isiolo County is a challenging environment for Parsley (soil-match score 21/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Parsley'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/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Parsley 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 Parsley's minimum of 600 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Parsley is the #48 soil match of the 106 crops we assess for Isiolo County. Parsley's full potential is about 4,000 kg/acre (~KES 400,000/acre at KES 100/kg), but at Isiolo's 21/100 suitability a realistic target here is closer to 1,050 kg/acre (~KES 105,000/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.

21Suitability score

Soil & climate match

FactorIsiolo soilParsley needsStatus
pH7.8367.5Adjust
Nitrogen0.46 g/kgmin 1.2 g/kgLow
Phosphorus37.4 mg/kgmin 12 mg/kgOK
Potassium395 mg/kgmin 150 mg/kgOK
Rainfall350 mm600–1,200 mmLow
Altitude900 m800–2,400 mOK

Planting calendar for Isiolo

Long Rains· MarchMay

March
Direct Sowing & Basal
April
Thinning & Top Dressing
May
Continuous Harvest

Short Rains· OctoberDecemberMain season here

October
Direct Sowing & Basal
November
Thinning & Top Dressing
December
Continuous Harvest

Top dressing guide

Product
CAN
Timing
Week 3 and week 6
Instruction
Two light applications sustain continuous leaf harvest.
Bags per acre in Isiolo
0.50.3

Isiolo's nitrogen (0.46 g/kg) is 38% of the 1.2 g/kg Parsley needs, so the standard 0.3 bags/acre is raised to 0.5. Split it across two applications to limit leaching.

Economics

Market priceKES 100/kg
Expected yield in Isiolo1,050 kg/acre
Estimated revenueKES 105,000/acre
Adjusted for Isiolo's 21/100 suitability. Under ideal conditions Parsley can reach 4,000 kg/acre (~KES 400,000/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