Growing Watermelon in Isiolo

Soil suitability analysis based on Isiolo's nutrient profile

Isiolo County is a solid choice for Watermelon, with a soil-match score of 67/100. At an average pH of 7.83 the soil sits above Watermelon'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/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy soils suit Watermelon, which favours sandy. Watermelon's full potential is about 15,000 kg/acre (~KES 150,000/acre at KES 10/kg), but at Isiolo's 67/100 suitability a realistic target here is closer to 12,563 kg/acre (~KES 125,630/acre) unless the constraints above are addressed.