Growing Wambugu Apples in Kwale

Soil suitability analysis based on Kwale's nutrient profile

Quick answer

Generally not ideal — Kwale is poorly suited to Wambugu Apples. Kwale's soil (pH 6.76, near-neutral) gives Wambugu Apples a suitability score of 1/100. Match fertilizer to Kwale's nitrogen and phosphorus levels for the best result.

Kwale County is a challenging environment for Wambugu Apples (soil-match score 1/100) and will need significant amendment before planting. Local soils average pH 6.76 — neutral and inside the 5–7 band Wambugu Apples prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 0.93 g/kg, P 9.8 mg/kg, K 131 mg/kg against this crop's medium/medium/high demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy loam soils suit Wambugu Apples, which favours loam. At 200 m, the county sits below Wambugu Apples's preferred altitude range (1500–2500 m), which limits yield potential due to heat stress. Wambugu Apples's full potential is about 4,000 kg/acre (~KES 300,000/acre at KES 75/kg), but at Kwale's 1/100 suitability a realistic target here is closer to 50 kg/acre (~KES 3,750/acre) unless the constraints above are addressed.

1Suitability score

Soil & climate match

FactorKwale soilWambugu Apples needsStatus
pH6.7657OK
Nitrogen0.93 g/kgmin 0.8 g/kgOK
Phosphorus9.8 mg/kgmin 12 mg/kgLow
Potassium131 mg/kgmin 200 mg/kgLow
Rainfall900 mm1,000–1,800 mmLow
Altitude200 m1,500–2,500 mLow

Top dressing guide

Product
CAN
Timing
Biannual
Instruction
Apply at start of long and short rains. Young trees need half the rate of mature trees.
Bags per Acre
0.5

Recommended seed varieties

WambuguMedium/Highland
KALRO · 730-1000 days · 2.7–4.5 tons/acre
Kenya-adapted apple; does not require chilling; good local market.

Economics

Market priceKES 75/kg
Expected yield in Kwale50 kg/acre
Estimated revenueKES 3,750/acre
Adjusted for Kwale's 1/100 suitability. Under ideal conditions Wambugu Apples can reach 4,000 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(4,500)
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