Growing Sweet Orange in Mombasa

Soil suitability analysis based on Mombasa's nutrient profile

Quick answer

Yes, with the right inputs — Mombasa is moderately suited to Sweet Orange. Mombasa's soil (pH 6.24, slightly acidic) gives Sweet Orange a suitability score of 72/100. Match fertilizer to Mombasa's nitrogen and phosphorus levels for the best result.

Mombasa County is a solid choice for Sweet Orange, with a soil-match score of 72/100. Local soils average pH 6.24 — slightly acidic to near-neutral and inside the 6–7.5 band Sweet Orange prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.95 g/kg, P 8.4 mg/kg, K 136 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. Sweet Orange prefers loam soils, while Mombasa is largely sandy, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sweet Orange is the #52 soil match of the 106 crops we assess for Mombasa County. At current prices (about KES 50/kg) and a typical 12,000 kg/acre yield, a well-managed Sweet Orange crop here can gross roughly KES 600,000 per acre.

72Suitability score

Soil & climate match

FactorMombasa soilSweet Orange needsStatus
pH6.2467.5OK
Nitrogen0.95 g/kgmin 1.2 g/kgLow
Phosphorus8.4 mg/kgmin 20 mg/kgLow
Potassium136 mg/kgmin 200 mg/kgLow
Rainfall1,000 mm600–1,200 mmOK
Altitude50 m0–2,100 mOK

Planting calendar for Mombasa

Long Rains· AprilJuneMain season here

April
Transplanting & Basal
May
Pruning & Top Dressing
June
Flowering & Fruit Set

Short Rains· NovemberJanuary

November
Transplanting & Basal
December
Pruning & Top Dressing
January
Fruit Development

Top dressing guide

Product
CAN
Timing
Three times per year
Instruction
Split feeding; add micronutrient foliar (Zn Mn) each season for fruit quality.
Bags per acre in Mombasa
0.750.6

Mombasa's nitrogen (0.95 g/kg) is 79% of the 1.2 g/kg Sweet Orange needs, so the standard 0.6 bags/acre is raised to 0.75. Split it across two applications to limit leaching.

Economics

Market priceKES 50/kg
Expected yield in Mombasa10,800 kg/acre
Estimated revenueKES 540,000/acre
Adjusted for Mombasa's 72/100 suitability. Under ideal conditions Sweet Orange can reach 12,000 kg/acre (~KES 600,000/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