Growing Maize in Makueni

Soil suitability analysis based on Makueni's nutrient profile

Quick answer

Yes, with the right inputs — Makueni is moderately suited to Maize. Makueni's soil (pH 7.5, alkaline) gives Maize a suitability score of 66/100. Match fertilizer to Makueni's nitrogen and phosphorus levels for the best result.

Makueni County is a solid choice for Maize, with a soil-match score of 66/100. At an average pH of 7.5 the soil sits above Maize's preferred 5.5–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.86 g/kg, P 29.6 mg/kg, K 351 mg/kg against this crop's high/high/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Maize, which favours loam. On ShambaIQ's soil-match model, Maize is the #51 soil match of the 106 crops we assess for Makueni County. Maize's full potential is about 1,800 kg/acre (~KES 81,000/acre at KES 45/kg), but at Makueni's 66/100 suitability a realistic target here is closer to 1,485 kg/acre (~KES 66,825/acre) unless the constraints above are addressed.

66Suitability score

Soil & climate match

FactorMakueni soilMaize needsStatus
pH7.55.5–7Adjust
Nitrogen0.86 g/kgmin 1.2 g/kgLow
Phosphorus29.6 mg/kgmin 20 mg/kgOK
Potassium351 mg/kgmin 150 mg/kgOK
Rainfall600 mm500–1,600 mmOK
Altitude1,000 m0–2,500 mOK

Planting calendar for Makueni

Long Rains· March–May

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

Short Rains· October–DecemberMain season here

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 Makueni
1.251

Makueni's nitrogen (0.86 g/kg) is 72% 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 Makueni

9 maize varieties are rated for Makueni's altitude (1,000 m) and rainfall (600 mm):

Katumani Composite B· DrylandDH04· DrylandH516· LowlandDH01· DrylandDH02· Dryland/MediumDH03· DrylandUkamez-2· Dryland/MediumUkamez-1· DrylandKH500-48A· Dryland/Medium
Full variety details — maturity, yield & breeder →

Economics

Market priceKES 45/kg
Expected yield in Makueni1,485 kg/acre
Estimated revenueKES 66,825/acre
Adjusted for Makueni's 66/100 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