Growing Sweet Potato in Kericho

Soil suitability analysis based on Kericho's nutrient profile

Quick answer

Yes — Kericho is well suited to Sweet Potato. Kericho's soil (pH 5.94, slightly acidic) gives Sweet Potato a suitability score of 93/100. Match fertilizer to Kericho's nitrogen and phosphorus levels for the best result.

Kericho County is well suited to Sweet Potato, scoring 93/100 on ShambaIQ's soil-match model. Local soils average pH 5.94 — slightly acidic to near-neutral and inside the 4.5–7 band Sweet Potato prefers, so no lime is usually required. Nitrogen (1.34 g/kg), phosphorus (23.7 mg/kg) and potassium (225 mg/kg) all meet Sweet Potato's requirements, so a maintenance fertilizer programme is enough. Sweet Potato prefers sandy loam soils, while Kericho is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Sweet Potato is the #2 soil match of the 106 crops we assess for Kericho County. At current prices (about KES 18/kg) and a typical 5,000 kg/acre yield, a well-managed Sweet Potato crop here can gross roughly KES 90,000 per acre.

93Suitability score

Soil & climate match

FactorKericho soilSweet Potato needsStatus
pH5.944.57OK
Nitrogen1.34 g/kgmin 0.5 g/kgOK
Phosphorus23.7 mg/kgmin 12 mg/kgOK
Potassium225 mg/kgmin 200 mg/kgOK
Rainfall1,800 mm600–1,800 mmOK
Altitude2,000 m0–2,200 mOK

Planting calendar

Long Rains

Month 1
Vine Cutting Planting & Basal Fertilizer
Month 2
Weeding & Vine Management
Month 3
Harvesting & Storage

Short Rains

Month 1
Vine Planting & Basal Fertilizer
Month 2
Vine Trailing & Weeding
Month 3
Harvesting

Dry Season

Month 1
Irrigation & Vine Planting
Month 2
Weeding
Month 3
Harvesting & Vine Multiplication

Top dressing guide

Product
None
Timing
None required
Instruction
Sweet potatoes rarely need top dressing. Excess N promotes vines over tubers.
Bags per Acre
0

Recommended seed varieties

KabodeMedium/Dryland
CIP/KALRO · 120-150 days · 3–4 tons/acre
Orange-fleshed; high Vitamin A; drought tolerant.
Kenspot 5Medium/Highland
KALRO · 90-120 days · 4–5 tons/acre
Purple-skinned; excellent taste; good market demand.
VitamuMedium/Highland
KALRO · 120-150 days · 3.5–4.5 tons/acre
Orange-fleshed; dual purpose grain and fodder; KEPHIS certified; 1200-1800m; released 2015.
Kenspot-1Highland
KARI Njoro · 120-150 days · 3.5–4.5 tons/acre
Orange-fleshed; high beta-carotene; suited to 1700-2300m; released 2013.
Kenspot-3Highland
KARI Njoro · 120-150 days · 4–5 tons/acre
White-fleshed; high dry matter; good storability; 1900-2300m cold highland adapted; released 2013.

Economics

Market priceKES 18/kg
Expected yield 5,000 kg/acre
Estimated revenueKES 90,000/acre

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