Growing Leek in Tana River
Soil suitability analysis based on Tana River's nutrient profile
Generally not ideal — Tana River is poorly suited to Leek. Tana River's soil (pH 6.4, slightly acidic) gives Leek a suitability score of 2/100. Match fertilizer to Tana River's nitrogen and phosphorus levels for the best result.
Tana River County is a challenging environment for Leek (soil-match score 2/100) and will need significant amendment before planting. Local soils average pH 6.4 — slightly acidic to near-neutral and inside the 6–7.5 band Leek prefers, so no lime is usually required. The main gap is nitrogen, phosphorus, and potassium — measured at N 1.04 g/kg, P 8.5 mg/kg, K 108 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. Leek prefers loam soils, while Tana River is largely sandy, so drainage and organic-matter management matter more here. Tana River receives approximately 400 mm/year — well below Leek's minimum of 600 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Leek is the #81 soil match of the 106 crops we assess for Tana River County. Leek's full potential is about 10,000 kg/acre (~KES 600,000/acre at KES 60/kg), but at Tana River's 2/100 suitability a realistic target here is closer to 250 kg/acre (~KES 15,000/acre) unless the constraints above are addressed.
Better matched to Tana River's soil: Sorghum, Cowpeas, and Pigeon Peas — each scores higher on the same soil.
Soil & climate match
| Factor | Tana River soil | Leek needs | Status |
|---|---|---|---|
| pH | 6.4 | 6–7.5 | OK |
| Nitrogen | 1.04 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 8.5 mg/kg | min 12 mg/kg | Low |
| Potassium | 108 mg/kg | min 200 mg/kg | Low |
| Rainfall | 400 mm | 600–1,200 mm | Low |
| Altitude | 200 m | 800–2,500 m | Low |
Planting calendar for Tana River
Long Rains· March–May
Short Rains· October–DecemberMain season here
Top dressing guide
Tana River's nitrogen (1.04 g/kg) is 87% of the 1.2 g/kg Leek needs, so the standard 0.4 bags/acre is raised to 0.5. Split it across two applications to limit leaching.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag