Growing Garlic in Trans Nzoia

Soil suitability analysis based on Trans Nzoia's nutrient profile

Quick answer

Yes, with the right inputs — Trans Nzoia is moderately suited to Garlic. Trans Nzoia's soil (pH 5.93, slightly acidic) gives Garlic a suitability score of 69/100. Match fertilizer to Trans Nzoia's nitrogen and phosphorus levels for the best result.

Trans Nzoia County is a solid choice for Garlic, with a soil-match score of 69/100. At an average pH of 5.93 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. Nitrogen (1.68 g/kg), phosphorus (27.3 mg/kg) and potassium (213 mg/kg) all meet Garlic's requirements, so a maintenance fertilizer programme is enough. Garlic prefers sandy loam soils, while Trans Nzoia 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 Trans Nzoia's 69/100 suitability a realistic target here is closer to 2,588 kg/acre (~KES 711,700/acre) unless the constraints above are addressed.

69Suitability score

Soil & climate match

FactorTrans Nzoia soilGarlic needsStatus
pH5.9367.5Adjust
Nitrogen1.68 g/kgmin 1.2 g/kgOK
Phosphorus27.3 mg/kgmin 12 mg/kgOK
Potassium213 mg/kgmin 200 mg/kgOK
Rainfall1,200 mm500–900 mmHigh
Altitude1,900 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 Trans Nzoia2,588 kg/acre
Estimated revenueKES 711,700/acre
Adjusted for Trans Nzoia's 69/100 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