Growing Dolichos in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a challenging environment for Dolichos (soil-match score 39/100) and will need significant amendment before planting. At an average pH of 7.83 the soil sits above Dolichos's preferred 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 low/low/low demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Dolichos, which favours sandy loam. At current prices (about KES 120/kg) and a typical 500 kg/acre yield, a well-managed Dolichos crop here can gross roughly KES 60,000 per acre.