Growing African Nightshade in Kwale

Soil suitability analysis based on Kwale's nutrient profile

Kwale County is a challenging environment for African Nightshade (soil-match score 3/100) and will need significant amendment before planting. Local soils average pH 6.76 — neutral and inside the 5.5–7.5 band African Nightshade prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 0.93 g/kg, P 9.8 mg/kg, K 131 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly sandy loam soils suit African Nightshade, which favours loam. At 200 m, the county sits below African Nightshade's preferred altitude range (1000–2200 m), which limits yield potential due to heat stress. On ShambaIQ's soil-match model, African Nightshade is the #84 soil match of the 106 crops we assess for Kwale County. African Nightshade's full potential is about 5,000 kg/acre (~KES 250,000/acre at KES 50/kg), but at Kwale's 3/100 suitability a realistic target here is closer to 188 kg/acre (~KES 9,400/acre) unless the constraints above are addressed.

Better matched to Kwale's soil: Dhania, Pigeon Peas, and Mango — each scores higher on the same soil.