Growing Capsicum in Machakos

Soil suitability analysis based on Machakos's nutrient profile

Quick answer

Yes — Machakos is well suited to Capsicum. Machakos's soil (pH 7.03, near-neutral) gives Capsicum a suitability score of 76/100. Match fertilizer to Machakos's nitrogen and phosphorus levels for the best result.

Machakos County is well suited to Capsicum, scoring 76/100 on ShambaIQ's soil-match model. At an average pH of 7.03 the soil sits above Capsicum's preferred 5.5–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.82 g/kg, P 31.4 mg/kg, K 338 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Capsicum, which favours loam. At current prices (about KES 90/kg) and a typical 6,000 kg/acre yield, a well-managed Capsicum crop here can gross roughly KES 540,000 per acre.

76Suitability score

Soil & climate match

FactorMachakos soilCapsicum needsStatus
pH7.035.57Adjust
Nitrogen0.82 g/kgmin 1.2 g/kgLow
Phosphorus31.4 mg/kgmin 20 mg/kgOK
Potassium338 mg/kgmin 200 mg/kgOK
Rainfall700 mm600–1,200 mmOK
Altitude1,100 m0–2,000 mOK

Top dressing guide

Product
CAN
Timing
Week 3, 6, and 9 after transplanting
Instruction
Split into 3 applications. Add foliar potassium at fruiting stage for fruit size and quality.
Bags per Acre
0.5

Recommended seed varieties

California WonderMedium/Highland
Simlaw Seeds · 75-85 days · 3–4 tons/acre
Large blocky fruits; excellent fresh market demand.
Yolo WonderMedium
East Africa Seeds · 70-80 days · 2.5–3.5 tons/acre
Open-pollinated; reliable yield; tolerant to tobacco mosaic virus.

Economics

Market priceKES 90/kg
Expected yield in Machakos5,700 kg/acre
Estimated revenueKES 513,000/acre
Adjusted for Machakos's 76/100 suitability. Under ideal conditions Capsicum can reach 6,000 kg/acre (~KES 540,000/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