Growing Cassava in Nyamira

Soil suitability analysis based on Nyamira's nutrient profile

Quick answer

Yes, with the right inputs — Nyamira is moderately suited to Cassava. Nyamira's soil (pH 5.58, slightly acidic) gives Cassava a suitability score of 61/100. Match fertilizer to Nyamira's nitrogen and phosphorus levels for the best result.

Nyamira County is a solid choice for Cassava, with a soil-match score of 61/100. Local soils average pH 5.58 — slightly acidic to near-neutral and inside the 4.5–7 band Cassava prefers, so no lime is usually required. The main gap is potassium — measured at N 0.84 g/kg, P 11.6 mg/kg, K 148 mg/kg against this crop's low/low/medium demand — so the fertilizer plan below prioritises closing that deficit. Cassava prefers sandy soils, while Nyamira is largely clay loam, so drainage and organic-matter management matter more here. At 1700 m, the county sits above Cassava's preferred altitude ceiling of 1400 m, where frost risk and cold nights reduce the crop's productivity. On ShambaIQ's soil-match model, Cassava is the #49 soil match of the 106 crops we assess for Nyamira County. Cassava's full potential is about 6,000 kg/acre (~KES 90,000/acre at KES 15/kg), but at Nyamira's 61/100 suitability a realistic target here is closer to 4,575 kg/acre (~KES 68,625/acre) unless the constraints above are addressed.

61Suitability score

Soil & climate match

FactorNyamira soilCassava needsStatus
pH5.584.57OK
Nitrogen0.84 g/kgmin 0.5 g/kgOK
Phosphorus11.6 mg/kgmin 6 mg/kgOK
Potassium148 mg/kgmin 150 mg/kgLow
Rainfall1,600 mm500–1,500 mmHigh
Altitude1,700 m0–1,400 mHigh

Planting calendar for Nyamira

Long Rains· MarchMayMain season here

March
Stem Cutting Planting
April
Weeding & Pest Monitoring
May
Growth Monitoring

Short Rains· AugustOctober

August
Weeding & Mound Formation
September
Pest & Disease Scouting
October
Growth Monitoring

Dry Season· JanuaryMarch

January
Harvesting (12+ months from planting)
February
Processing & Storage
March
Land Preparation for next crop

Top dressing guide

Product
None
Timing
None required
Instruction
Cassava is low-input. Excessive N causes leafy growth at expense of tubers.
Bags per acre in Nyamira
0

Nyamira's nitrogen reads 0.84 g/kg, but the rate stays at zero: Cassava is not top-dressed, for the crop-specific reason above.

Seed varieties for Nyamira

Varieties suited to Nyamira's 1,700 m altitude and 1,600 mm annual rainfall — 1 of 2 cassava varieties we list.

ShibeCoastal/Medium
KALRO · 270-330 days · 3–5 tons/acre
Sweet variety; low cyanide content; good for table use.

Economics

Market priceKES 15/kg
Expected yield in Nyamira4,575 kg/acre
Estimated revenueKES 68,625/acre
Adjusted for Nyamira's 61/100 suitability. Under ideal conditions Cassava can reach 6,000 kg/acre (~KES 90,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureSandy

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