Growing Barley in Nyandarua

Soil suitability analysis based on Nyandarua's nutrient profile

Quick answer

Yes, with the right inputs — Nyandarua is moderately suited to Barley. Nyandarua's soil (pH 5.38, strongly acidic) gives Barley a suitability score of 62/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Nyandarua County is a solid choice for Barley, with a soil-match score of 62/100. At an average pH of 5.38 the soil is moderately acidic, below Barley's preferred 6–7.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is phosphorus — measured at N 1.28 g/kg, P 14 mg/kg, K 166 mg/kg against this crop's medium/high/medium demand — so the fertilizer plan below prioritises closing that deficit. Barley prefers loam soils, while Nyandarua is largely clay, so drainage and organic-matter management matter more here. On ShambaIQ's soil-match model, Barley is the #41 soil match of the 106 crops we assess for Nyandarua County. Barley's full potential is about 1,600 kg/acre (~KES 67,200/acre at KES 42/kg), but at Nyandarua's 62/100 suitability a realistic target here is closer to 1,240 kg/acre (~KES 52,080/acre) unless the constraints above are addressed.

62Suitability score

Soil & climate match

FactorNyandarua soilBarley needsStatus
pH5.386–7.5Adjust
Nitrogen1.28 g/kgmin 0.8 g/kgOK
Phosphorus14 mg/kgmin 20 mg/kgLow
Potassium166 mg/kgmin 150 mg/kgOK
Rainfall1,100 mm500–1,000 mmHigh
Altitude2,300 m2,000–3,000 mOK

Planting calendar for Nyandarua

Long Rains· March–MayMain season here

March
Drilling Sowing & Basal Fertilizer (DAP)
April
Top Dressing (CAN) at tillering
May
Heading & Pest Monitoring

Short Rains· October–December

October
Sowing & Basal Fertilizer
November
Top Dressing at tillering & Weed Control
December
Harvesting & Drying

Dry Season· January–March

January
Post-Harvest Threshing & Storage
February
Land Resting & Ploughing
March
Seed Selection & Soil pH Check

Top dressing guide

Product
CAN
Timing
Week 4-6 at tillering
Instruction
Apply at early tillering, but keep nitrogen moderate — excess N raises grain protein and lowers malting quality
Bags per acre in Nyandarua
1

Nyandarua's nitrogen (1.28 g/kg) already meets Barley's 0.8 g/kg requirement, so this is a maintenance rate.

Seed varieties for Nyandarua

4 barley varieties are rated for Nyandarua's altitude (2,300 m) and rainfall (1,100 mm):

Nguzo· HighlandGrace· HighlandKarne· HighlandSabini· Highland
Full variety details — maturity, yield & breeder →

Economics

Market priceKES 42/kg
Expected yield in Nyandarua1,240 kg/acre
Estimated revenueKES 52,080/acre
Adjusted for Nyandarua's 62/100 suitability. Under ideal conditions Barley can reach 1,600 kg/acre (~KES 67,200/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureLoam

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