Growing Radish in Mombasa

Soil suitability analysis based on Mombasa's nutrient profile

Quick answer

Generally not ideal — Mombasa is poorly suited to Radish. Mombasa's soil (pH 6.24, slightly acidic) gives Radish a suitability score of 1/100. Match fertilizer to Mombasa's nitrogen and phosphorus levels for the best result.

Mombasa County is a challenging environment for Radish (soil-match score 1/100) and will need significant amendment before planting. Local soils average pH 6.24 — slightly acidic to near-neutral and inside the 6–7.5 band Radish prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 0.95 g/kg, P 8.4 mg/kg, K 136 mg/kg against this crop's medium/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy soils suit Radish, which favours sandy loam. At 50 m, the county sits below Radish's preferred altitude range (500–2500 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, Radish is the #68 soil match of the 106 crops we assess for Mombasa County. Radish's full potential is about 8,000 kg/acre (~KES 320,000/acre at KES 40/kg), but at Mombasa's 1/100 suitability a realistic target here is closer to 100 kg/acre (~KES 4,000/acre) unless the constraints above are addressed.

Better matched to Mombasa's soil: Finger Millet, Cashew Nuts, and Napier Grass — each scores higher on the same soil.

1Suitability score

Soil & climate match

FactorMombasa soilRadish needsStatus
pH6.2467.5OK
Nitrogen0.95 g/kgmin 0.8 g/kgOK
Phosphorus8.4 mg/kgmin 12 mg/kgLow
Potassium136 mg/kgmin 150 mg/kgLow
Rainfall1,000 mm500–1,000 mmOK
Altitude50 m500–2,500 mLow

Planting calendar for Mombasa

Long Rains· AprilJuneMain season here

April
Direct Sowing & Basal
May
Thinning & Top Dressing
June
Harvest

Short Rains· NovemberJanuary

November
Direct Sowing & Basal
December
Thinning
January
Harvest

Top dressing guide

Product
CAN
Timing
Week 2
Instruction
Fast crop — one light top-dress is enough. Excess nitrogen grows leaf not root.
Bags per acre in Mombasa
0.250.2

Mombasa's nitrogen (0.95 g/kg) already meets Radish's 0.8 g/kg requirement, so this is a maintenance rate.

Economics

Market priceKES 40/kg
Expected yield in Mombasa100 kg/acre
Estimated revenueKES 4,000/acre
Adjusted for Mombasa's 1/100 suitability. Under ideal conditions Radish can reach 8,000 kg/acre (~KES 320,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy Loam

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