Growing African Nightshade in Turkana

Soil suitability analysis based on Turkana's nutrient profile

Turkana County is a challenging environment for African Nightshade (soil-match score 1/100) and will need significant amendment before planting. At an average pH of 7.95 the soil sits above African Nightshade's preferred 5.5–7.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.41 g/kg, P 38.5 mg/kg, K 417 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. African Nightshade prefers loam soils, while Turkana is largely sandy, so drainage and organic-matter management matter more here. Turkana receives approximately 300 mm/year — well below African Nightshade's minimum of 800 mm — so supplemental irrigation would be essential for this crop. At current prices (about KES 50/kg) and a typical 3,500 kg/acre yield, a well-managed African Nightshade crop here can gross roughly KES 175,000 per acre.