Growing Cape Gooseberry in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Cape Gooseberry (soil-match score 9/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Cape Gooseberry's preferred 6–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.46 g/kg, P 37.4 mg/kg, K 395 mg/kg against this crop's medium/medium/high demand — so the fertilizer plan below prioritises closing that deficit. Cape Gooseberry prefers loam soils, while Isiolo is largely sandy, so drainage and organic-matter management matter more here. Isiolo receives approximately 350 mm/year — well below Cape Gooseberry's minimum of 700 mm — so supplemental irrigation would be essential for this crop. Cape Gooseberry's full potential is about 5,000 kg/acre (~KES 600,000/acre at KES 120/kg), but at Isiolo's 9/100 suitability a realistic target here is closer to 563 kg/acre (~KES 67,560/acre) unless the constraints above are addressed.

9Suitability score

Soil & climate match

FactorIsiolo soilCape Gooseberry needsStatus
pH7.8367.5Adjust
Nitrogen0.46 g/kgmin 0.8 g/kgLow
Phosphorus37.4 mg/kgmin 12 mg/kgOK
Potassium395 mg/kgmin 200 mg/kgOK
Rainfall350 mm700–1,400 mmLow
Altitude900 m1,200–2,600 mLow

Planting calendar

Long Rains

Month 1
Nursery & Transplanting & Basal
Month 2
Staking & Top Dressing
Month 3
Fruiting & Harvest

Short Rains

Month 1
Nursery & Transplanting & Basal
Month 2
Staking & Top Dressing
Month 3
Fruiting & Harvest

Top dressing guide

Product
CAN
Timing
Week 4 and at flowering
Instruction
Add potassium at fruiting. Excess nitrogen delays fruit set.
Bags per Acre
0.4

Economics

Market priceKES 120/kg
Expected yield in Isiolo563 kg/acre
Estimated revenueKES 67,560/acre
Adjusted for Isiolo's 9/100 suitability. Under ideal conditions Cape Gooseberry can reach 5,000 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