Growing Passion Fruit in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Passion Fruit (soil-match score 5/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Passion Fruit's preferred 5.5–7.5 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 high/medium/high demand — so the fertilizer plan below prioritises closing that deficit. Passion Fruit 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 Passion Fruit's minimum of 900 mm — so supplemental irrigation would be essential for this crop. Passion Fruit's full potential is about 8,000 kg/acre (~KES 560,000/acre at KES 70/kg), but at Isiolo's 5/100 suitability a realistic target here is closer to 500 kg/acre (~KES 35,000/acre) unless the constraints above are addressed.