Growing Potato in Nyeri

Soil suitability analysis based on Nyeri's nutrient profile

Quick answer

Yes — Nyeri is well suited to Potato. Nyeri's soil (pH 5.23, strongly acidic) gives Potato a suitability score of 84/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Nyeri County is well suited to Potato, scoring 84/100 on ShambaIQ's soil-match model. Local soils average pH 5.23 — 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 1.09 g/kg, P 15.5 mg/kg, K 192 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 Nyeri is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Potato is the #7 soil match of the 106 crops we assess for Nyeri County. At current prices (about KES 38/kg) and a typical 8,000 kg/acre yield, a well-managed Potato crop here can gross roughly KES 304,000 per acre.

84Suitability score

Soil & climate match

FactorNyeri soilPotato needsStatus
pH5.234.8–6.5OK
Nitrogen1.09 g/kgmin 1.2 g/kgLow
Phosphorus15.5 mg/kgmin 20 mg/kgLow
Potassium192 mg/kgmin 200 mg/kgLow
Rainfall1,200 mm700–1,500 mmOK
Altitude1,700 m1,500–3,000 mOK

Planting calendar for Nyeri

Long Rains· March–MayMain season here

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

Short Rains· October–December

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

Dry Season· January–March

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 Nyeri
1.251

Nyeri's nitrogen (1.09 g/kg) is 91% 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 Nyeri

14 potato varieties are rated for Nyeri's altitude (1,700 m) and rainfall (1,200 mm):

Shangi· Medium/HighlandUnica· Dryland/MediumTigoni· HighlandAsante· Medium/HighlandKenya Furaha· Medium/HighlandKenya Mpya· Medium/HighlandClone IG-70· HighlandDutch Robijn· HighlandKenya Baraka· HighlandSherekea· Medium/HighlandLenana· HighlandWanjiku· HighlandNyota· HighlandChulu· Highland
Full variety details — maturity, yield & breeder →

Economics

Market priceKES 38/kg
Expected yield 8,000 kg/acre
Estimated revenueKES 304,000/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