Growing African Nightshade in Mandera
Soil suitability analysis based on Mandera's nutrient profile
Generally not ideal — Mandera is poorly suited to African Nightshade. Mandera's soil (pH 8.38, alkaline) gives African Nightshade a suitability score of 0/100. Match fertilizer to Mandera's nitrogen and phosphorus levels for the best result.
Mandera County is a challenging environment for African Nightshade (soil-match score 0/100) and will need significant amendment before planting. At an average pH of 8.38 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 0.53 g/kg, P 38.3 mg/kg, K 420 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 Mandera is largely sandy, so drainage and organic-matter management matter more here. Mandera receives approximately 180 mm/year — well below African Nightshade's minimum of 800 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, African Nightshade is the #92 soil match of the 106 crops we assess for Mandera County. African Nightshade's full potential is about 5,000 kg/acre (~KES 250,000/acre at KES 50/kg), but at Mandera's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.
Better matched to Mandera's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.
Soil & climate match
| Factor | Mandera soil | African Nightshade needs | Status |
|---|---|---|---|
| pH | 8.38 | 5.5–7.5 | Adjust |
| Nitrogen | 0.53 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 38.3 mg/kg | min 12 mg/kg | OK |
| Potassium | 420 mg/kg | min 150 mg/kg | OK |
| Rainfall | 180 mm | 800–1,500 mm | Low |
| Altitude | 250 m | 1,000–2,200 m | Low |
Planting calendar
Long Rains
Short Rains
Dry Season
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag