Growing Soybeans in Kitui

Soil suitability analysis based on Kitui's nutrient profile

Quick answer

Possible but challenging — Kitui is only marginally suited to Soybeans. Kitui's soil (pH 7.03, near-neutral) gives Soybeans a suitability score of 53/100. Match fertilizer to Kitui's nitrogen and phosphorus levels for the best result.

Soybeans can be grown in Kitui County, but the soil scores 53/100 and needs targeted management to reach full potential. At an average pH of 7.03 the soil sits above Soybeans's preferred 5–7 range, which can limit uptake of phosphorus and micronutrients. Nitrogen (0.74 g/kg), phosphorus (30.5 mg/kg) and potassium (339 mg/kg) all meet Soybeans's requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Soybeans, which favours loam. Soybeans's full potential is about 700 kg/acre (~KES 52,500/acre at KES 75/kg), but at Kitui's 53/100 suitability a realistic target here is closer to 464 kg/acre (~KES 34,800/acre) unless the constraints above are addressed.

53Suitability score

Soil & climate match

FactorKitui soilSoybeans needsStatus
pH7.0357Adjust
Nitrogen0.74 g/kgmin 0.5 g/kgOK
Phosphorus30.5 mg/kgmin 12 mg/kgOK
Potassium339 mg/kgmin 150 mg/kgOK
Rainfall500 mm600–2,000 mmLow
Altitude900 m0–1,800 mOK

Top dressing guide

Product
None
Timing
None required
Instruction
Soybeans fix their own Nitrogen. Do NOT apply CAN — it suppresses nodulation and reduces yield.
Bags per Acre
0

Recommended seed varieties

SB 19Medium/Highland
KALRO · 90-100 days · 8-12 bags/acre
High protein content; disease resistant; good for oil and flour.
GazelleMedium
Pannar Seeds · 95-110 days · 10-14 bags/acre
High yielding hybrid; excellent grain quality; broad adaptation.

Economics

Market priceKES 75/kg
Expected yield in Kitui464 kg/acre
Estimated revenueKES 34,800/acre
Adjusted for Kitui's 53/100 suitability. Under ideal conditions Soybeans can reach 700 kg/acre (~KES 52,500/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(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