Growing Tea in Makueni

Soil suitability analysis based on Makueni's nutrient profile

Makueni County is a challenging environment for Tea (soil-match score 7/100) and will need significant amendment before planting. At an average pH of 7.5 the soil sits above Tea's preferred 4.5–6 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/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Tea prefers clay soils, while Makueni is largely sandy loam, so drainage and organic-matter management matter more here. Makueni receives approximately 600 mm/year — well below Tea's minimum of 1100 mm — so supplemental irrigation would be essential for this crop. Tea's full potential is about 2,200 kg/acre (~KES 55,000/acre at KES 25/kg), but at Makueni's 7/100 suitability a realistic target here is closer to 193 kg/acre (~KES 4,825/acre) unless the constraints above are addressed.

7Suitability score

Soil & climate match

FactorMakueni soilTea needsStatus
pH7.54.56Adjust
Nitrogen0.86 g/kgmin 1.2 g/kgLow
Phosphorus29.6 mg/kgmin 12 mg/kgOK
Potassium351 mg/kgmin 150 mg/kgOK
Rainfall600 mm1,100–2,500 mmLow
Altitude1,000 m1,500–3,000 mLow

Planting calendar

Long Rains

Month 1
Plucking & NPK Fertilizer Application
Month 2
Plucking & Weed Control
Month 3
Pest Monitoring & Top Dressing

Short Rains

Month 1
Plucking & Top Dressing
Month 2
Plucking & Pest Control
Month 3
Fertilizer Application

Dry Season

Month 1
Pruning & Canopy Management
Month 2
Land Conservation & Mulching
Month 3
Recovery Plucking

Top dressing guide

Product
NPK 26:5:5
Timing
Continuous (every 3 months)
Instruction
Apply evenly around root zone. Avoid lime — tea prefers acidic soil.
Bags per Acre
1

Recommended seed varieties

TRFK 31/8Highland Tea Zone
Tea Research Institute · 1000-1200 days · 2500–3500 kg/acre
Drought tolerant; standard yield control clone.
TRFK 306 (Purple Tea)Highland Tea Zone
Tea Research Institute · 1000-1200 days · 2000–3000 kg/acre
Rich in anthocyanin; premium specialty tea.

Economics

Market priceKES 25/kg
Expected yield in Makueni193 kg/acre
Estimated revenueKES 4,825/acre
Adjusted for Makueni's 7/100 suitability. Under ideal conditions Tea can reach 2,200 kg/acre (~KES 55,000/acre) — attainable here only after the climate and soil constraints below are addressed.

Preferred textureClay

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