Growing African Nightshade in Makueni
Soil suitability analysis based on Makueni's nutrient profile
Possible but challenging — Makueni is only marginally suited to African Nightshade. Makueni's soil (pH 7.5, alkaline) gives African Nightshade a suitability score of 40/100. Match fertilizer to Makueni's nitrogen and phosphorus levels for the best result.
Makueni County is a challenging environment for African Nightshade (soil-match score 40/100) and will need significant amendment before planting. Local soils average pH 7.5 — alkaline and inside the 5.5–7.5 band African Nightshade prefers, so no lime is usually required. The main gap is nitrogen — measured at N 0.86 g/kg, P 29.6 mg/kg, K 351 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly sandy loam soils suit African Nightshade, which favours loam. On ShambaIQ's soil-match model, African Nightshade is the #73 soil match of the 106 crops we assess for Makueni County. African Nightshade's full potential is about 5,000 kg/acre (~KES 250,000/acre at KES 50/kg), but at Makueni's 40/100 suitability a realistic target here is closer to 2,500 kg/acre (~KES 125,000/acre) unless the constraints above are addressed.
Better matched to Makueni's soil: Lucerne, Mango, and Sisal — each scores higher on the same soil.
Soil & climate match
| Factor | Makueni soil | African Nightshade needs | Status |
|---|---|---|---|
| pH | 7.5 | 5.5–7.5 | OK |
| Nitrogen | 0.86 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 29.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 351 mg/kg | min 150 mg/kg | OK |
| Rainfall | 600 mm | 800–1,500 mm | Low |
| Altitude | 1,000 m | 1,000–2,200 m | OK |
Planting calendar
Long Rains
Short Rains
Dry Season
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag