Growing Arrow Root in Kilifi
Soil suitability analysis based on Kilifi's nutrient profile
Possible but challenging — Kilifi is only marginally suited to Arrow Root. Kilifi's soil (pH 6.24, slightly acidic) gives Arrow Root a suitability score of 41/100. Match fertilizer to Kilifi's nitrogen and phosphorus levels for the best result.
Kilifi County is a challenging environment for Arrow Root (soil-match score 41/100) and will need significant amendment before planting. Local soils average pH 6.24 — slightly acidic to near-neutral and inside the 5–7 band Arrow Root prefers, so no lime is usually required. The main gap is phosphorus and potassium — measured at N 0.8 g/kg, P 11 mg/kg, K 109 mg/kg against this crop's medium/medium/high demand — so the fertilizer plan below prioritises closing those deficits. Arrow Root prefers clay loam soils, while Kilifi is largely sandy loam, so drainage and organic-matter management matter more here. Kilifi receives approximately 700 mm/year — well below Arrow Root's minimum of 1000 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Arrow Root is the #56 soil match of the 106 crops we assess for Kilifi County. Arrow Root's full potential is about 5,000 kg/acre (~KES 275,000/acre at KES 55/kg), but at Kilifi's 41/100 suitability a realistic target here is closer to 2,563 kg/acre (~KES 140,965/acre) unless the constraints above are addressed.
Better matched to Kilifi's soil: Sesame (Simsim), Sorghum, and Finger Millet — each scores higher on the same soil.
Soil & climate match
| Factor | Kilifi soil | Arrow Root needs | Status |
|---|---|---|---|
| pH | 6.24 | 5–7 | OK |
| Nitrogen | 0.8 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 11 mg/kg | min 12 mg/kg | Low |
| Potassium | 109 mg/kg | min 200 mg/kg | Low |
| Rainfall | 700 mm | 1,000–2,000 mm | Low |
| Altitude | 150 m | 0–1,800 m | OK |
Top dressing guide
Kilifi's nitrogen (0.8 g/kg) already meets Arrow Root's 0.8 g/kg requirement, so this is a maintenance rate.
Recommended seed varieties
No variety in our list is specifically rated for Kilifi's 150 m altitude and 700 mm rainfall, so all 1 are shown. Confirm with your agrovet before buying.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag