Growing Grapes in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Grapes (soil-match score 33/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Grapes'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/high/high demand — so the fertilizer plan below prioritises closing that deficit. Grapes 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 Grapes's minimum of 500 mm — so supplemental irrigation would be essential for this crop. Grapes's full potential is about 8,000 kg/acre (~KES 1,200,000/acre at KES 150/kg), but at Isiolo's 33/100 suitability a realistic target here is closer to 3,300 kg/acre (~KES 495,000/acre) unless the constraints above are addressed.