Growing Potato in Homa Bay

Soil suitability analysis based on Homa Bay's nutrient profile

Quick answer

Possible but challenging — Homa Bay is only marginally suited to Potato. Homa Bay's soil (pH 5.27, strongly acidic) gives Potato a suitability score of 52/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Potato can be grown in Homa Bay County, but the soil scores 52/100 and needs targeted management to reach full potential. Local soils average pH 5.27 — moderately acidic and inside the 4.8–6.5 band Potato prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 1.05 g/kg, P 13.8 mg/kg, K 147 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing those deficits. Potato prefers sandy loam soils, while Homa Bay is largely clay loam, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Potato is the #83 soil match of the 106 crops we assess for Homa Bay County. Potato's full potential is about 8,000 kg/acre (~KES 304,000/acre at KES 38/kg), but at Homa Bay's 52/100 suitability a realistic target here is closer to 5,200 kg/acre (~KES 197,600/acre) unless the constraints above are addressed.

Better matched to Homa Bay's soil: Macadamia, Avocado, and Pineapple — each scores higher on the same soil.

52Suitability score

Soil & climate match

FactorHoma Bay soilPotato needsStatus
pH5.274.86.5OK
Nitrogen1.05 g/kgmin 1.2 g/kgLow
Phosphorus13.8 mg/kgmin 20 mg/kgLow
Potassium147 mg/kgmin 200 mg/kgLow
Rainfall1,100 mm700–1,500 mmOK
Altitude1,200 m1,500–3,000 mLow

Planting calendar for Homa Bay

Long Rains· MarchMayMain season here

March
Planting Tubers & Basal Fertilizer (NPK)
April
Earthing Up & Top Dressing (CAN)
May
Pest Control (Blight) & Weeding

Short Rains· SeptemberNovember

September
Planting & Basal Fertilizer
October
Earthing Up & Top Dressing
November
Blight Control

Dry Season· JanuaryMarch

January
Harvesting & Storage
February
Land Resting
March
Seed Tuber Sprouting

Top dressing guide

Product
CAN
Timing
Week 3–4 after emergence
Instruction
Apply when plants are 15–20cm tall, before earthing up
Bags per acre in Homa Bay
1.251

Homa Bay's nitrogen (1.05 g/kg) is 88% of the 1.2 g/kg Potato needs, so the standard 1 bag/acre is raised to 1.25. Split it across two applications to limit leaching.

Seed varieties for Homa Bay

Varieties suited to Homa Bay's 1,200 m altitude and 1,100 mm annual rainfall — 6 of 14 potato varieties we list.

ShangiMedium/Highland
KALRO · 80-90 days · 300-350 bags/acre
Very fast cooking; high tuber density per plant.
UnicaDryland/Medium
KALRO · 90-100 days · 350-400 bags/acre
Heat tolerant; highly resistant to late blight.
AsanteMedium/Highland
KALRO · 85-95 days · 320-400 bags/acre
High yielding; good cooking quality; suited to medium altitude 1500-2000m.
Kenya FurahaMedium/Highland
KALRO · 90-100 days · 340-420 bags/acre
Good taste; disease tolerant; KEPHIS certified; consistent yield.
Kenya MpyaMedium/Highland
KALRO · 85-95 days · 300-380 bags/acre
New release; adapted to Central Kenya highlands; good storability.
SherekeaMedium/Highland
KARI/CIP · 90-105 days · 320-380 bags/acre
High yielding; good cooking quality; medium dormancy; suited to highlands 1400-3000m; released 2010.

Economics

Market priceKES 38/kg
Expected yield in Homa Bay5,200 kg/acre
Estimated revenueKES 197,600/acre
Adjusted for Homa Bay's 52/100 suitability. Under ideal conditions Potato can reach 8,000 kg/acre (~KES 304,000/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