Growing Guava in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Guava (soil-match score 15/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Guava'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 medium/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Guava 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 Guava's minimum of 700 mm — so supplemental irrigation would be essential for this crop. Guava's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Isiolo's 15/100 suitability a realistic target here is closer to 1,875 kg/acre (~KES 112,500/acre) unless the constraints above are addressed.