Growing Garlic in Nyamira

Soil suitability analysis based on Nyamira's nutrient profile

Quick answer

Possible but challenging — Nyamira is only marginally suited to Garlic. Nyamira's soil (pH 5.58, slightly acidic) gives Garlic a suitability score of 41/100. Match fertilizer to Nyamira's nitrogen and phosphorus levels for the best result.

Nyamira County is a challenging environment for Garlic (soil-match score 41/100) and will need significant amendment before planting. At an average pH of 5.58 the soil is slightly acidic to near-neutral, below Garlic's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.84 g/kg, P 11.6 mg/kg, K 148 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. Garlic prefers sandy loam soils, while Nyamira is largely clay loam, so drainage and organic-matter management matter more here. Garlic's full potential is about 3,000 kg/acre (~KES 825,000/acre at KES 275/kg), but at Nyamira's 41/100 suitability a realistic target here is closer to 1,537 kg/acre (~KES 422,675/acre) unless the constraints above are addressed.

41Suitability score

Soil & climate match

FactorNyamira soilGarlic needsStatus
pH5.5867.5Adjust
Nitrogen0.84 g/kgmin 1.2 g/kgLow
Phosphorus11.6 mg/kgmin 12 mg/kgLow
Potassium148 mg/kgmin 200 mg/kgLow
Rainfall1,600 mm500–900 mmHigh
Altitude1,700 m0–2,500 mOK

Top dressing guide

Product
CAN
Timing
Week 3-4 after planting
Instruction
Apply when shoots are 15cm tall. Stop nitrogen applications once bulbing begins.
Bags per Acre
0.5

Recommended seed varieties

Early PinkMedium/Highland
Local/KALRO · 120-150 days · 1–1.5 tons/acre
Good bulb size; pungent flavor; stores well.
Purple StripeHighland
Local · 130-160 days · 0.9–1.3 tons/acre
High allicin content; excellent storage; suited to cold highlands.

Economics

Market priceKES 275/kg
Expected yield in Nyamira1,537 kg/acre
Estimated revenueKES 422,675/acre
Adjusted for Nyamira's 41/100 suitability. Under ideal conditions Garlic can reach 3,000 kg/acre (~KES 825,000/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(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