Growing Cauliflower in Kitui

Soil suitability analysis based on Kitui's nutrient profile

Kitui County is a challenging environment for Cauliflower (soil-match score 24/100) and will need significant amendment before planting. Local soils average pH 7.03 — neutral and inside the 6–7.5 band Cauliflower prefers, so no lime is usually required. The main gap is nitrogen — measured at N 0.74 g/kg, P 30.5 mg/kg, K 339 mg/kg against this crop's high/high/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit Cauliflower, which favours loam. Kitui receives approximately 500 mm/year — well below Cauliflower's minimum of 700 mm — so supplemental irrigation would be essential for this crop. Cauliflower's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Kitui's 24/100 suitability a realistic target here is closer to 3,000 kg/acre (~KES 180,000/acre) unless the constraints above are addressed.

24Suitability score

Soil & climate match

FactorKitui soilCauliflower needsStatus
pH7.0367.5OK
Nitrogen0.74 g/kgmin 1.2 g/kgLow
Phosphorus30.5 mg/kgmin 20 mg/kgOK
Potassium339 mg/kgmin 200 mg/kgOK
Rainfall500 mm700–1,500 mmLow
Altitude900 m1,200–2,800 mLow

Planting calendar

Long Rains

Month 1
Nursery & Transplanting & Basal DAP
Month 2
Top Dressing CAN & Boron Spray
Month 3
Head Formation & Harvest

Short Rains

Month 1
Nursery & Transplanting & Basal
Month 2
Top Dressing & Pest Control
Month 3
Curd Development & Harvest

Top dressing guide

Product
CAN
Timing
Week 3 and 6 after transplanting
Instruction
Apply boron foliar at 4 weeks to prevent hollow stem. Avoid excess nitrogen after curd set.
Bags per Acre
0.5

Economics

Market priceKES 60/kg
Expected yield in Kitui3,000 kg/acre
Estimated revenueKES 180,000/acre
Adjusted for Kitui's 24/100 suitability. Under ideal conditions Cauliflower can reach 10,000 kg/acre (~KES 600,000/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(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