Growing Maize in Embu

Soil suitability analysis based on Embu's nutrient profile

Quick answer

Yes, with the right inputs — Embu is moderately suited to Maize. Embu's soil (pH 5.1, strongly acidic) gives Maize a suitability score of 67/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.

Embu County is a solid choice for Maize, with a soil-match score of 67/100. At an average pH of 5.1 the soil is moderately acidic, below Maize's preferred 5.5–7 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. The main gap is nitrogen and phosphorus — measured at N 1.04 g/kg, P 12.6 mg/kg, K 194 mg/kg against this crop's high/high/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly clay loam soils suit Maize, which favours loam. On ShambaIQ's soil-match model, Maize is the #30 soil match of the 106 crops we assess for Embu County. Maize's full potential is about 1,800 kg/acre (~KES 81,000/acre at KES 45/kg), but at Embu's 67/100 suitability a realistic target here is closer to 1,508 kg/acre (~KES 67,860/acre) unless the constraints above are addressed.

67Suitability score

Soil & climate match

FactorEmbu soilMaize needsStatus
pH5.15.5–7Adjust
Nitrogen1.04 g/kgmin 1.2 g/kgLow
Phosphorus12.6 mg/kgmin 20 mg/kgLow
Potassium194 mg/kgmin 150 mg/kgOK
Rainfall1,300 mm500–1,600 mmOK
Altitude1,400 m0–2,500 mOK

Planting calendar for Embu

Long Rains· March–MayMain season here

March
Sowing & Basal Fertilizer (DAP/NPK)
April
Top Dressing (CAN/Urea) & 1st Weeding
May
Crop Protection & Scouting

Short Rains· October–December

October
Fast Sowing & Basal Fertilizer
November
Top Dressing & Weeding
December
Fast Growth Scouting

Dry Season· January–March

January
Land Preparation & Manure
February
Soil Testing & Resting
March
Seed Selection & Storage

Top dressing guide

Product
CAN
Timing
Week 4–6 after germination
Instruction
When plant is knee-high broadcast between rows
Bags per acre in Embu
1.251

Embu's nitrogen (1.04 g/kg) is 87% of the 1.2 g/kg Maize needs, so the standard 1 bag/acre is raised to 1.25. Split it across two applications to limit leaching.

Seed varieties for Embu

11 maize varieties are rated for Embu's altitude (1,400 m) and rainfall (1,300 mm):

H513· Medium AltitudeH623· Medium/HighlandDH02· Dryland/MediumWH403· MediumWH507· Medium/HighlandUkamez-2· Dryland/MediumEmbu-537· Medium/HighlandKH500-48A· Dryland/MediumFAWTH2001· Medium/HighlandFAWTH2002· Medium/HighlandFAWTH2003· Medium/Highland
Full variety details — maturity, yield & breeder →

Economics

Market priceKES 45/kg
Expected yield in Embu1,508 kg/acre
Estimated revenueKES 67,860/acre
Adjusted for Embu's 67/100 suitability. Under ideal conditions Maize can reach 1,800 kg/acre (~KES 81,000/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