Growing Arrow Root in Kajiado
Soil suitability analysis based on Kajiado's nutrient profile
Generally not ideal — Kajiado is poorly suited to Arrow Root. Kajiado's soil (pH 6.55, near-neutral) gives Arrow Root a suitability score of 22/100. Match fertilizer to Kajiado's nitrogen and phosphorus levels for the best result.
Kajiado County is a challenging environment for Arrow Root (soil-match score 22/100) and will need significant amendment before planting. Local soils average pH 6.55 — neutral and inside the 5–7 band Arrow Root prefers, so no lime is usually required. Nitrogen (0.97 g/kg), phosphorus (20.6 mg/kg) and potassium (257 mg/kg) all meet Arrow Root's requirements, so a maintenance fertilizer programme is enough. Arrow Root prefers clay loam soils, while Kajiado is largely sandy loam, so drainage and organic-matter management matter more here. Kajiado receives approximately 500 mm/year — well below Arrow Root's minimum of 1000 mm — so supplemental irrigation would be essential for this crop. Arrow Root's full potential is about 5,000 kg/acre (~KES 275,000/acre at KES 55/kg), but at Kajiado's 22/100 suitability a realistic target here is closer to 1,375 kg/acre (~KES 75,625/acre) unless the constraints above are addressed.
Soil & climate match
| Factor | Kajiado soil | Arrow Root needs | Status |
|---|---|---|---|
| pH | 6.55 | 5–7 | OK |
| Nitrogen | 0.97 g/kg | min 0.8 g/kg | OK |
| Phosphorus | 20.6 mg/kg | min 12 mg/kg | OK |
| Potassium | 257 mg/kg | min 200 mg/kg | OK |
| Rainfall | 500 mm | 1,000–2,000 mm | Low |
| Altitude | 1,300 m | 0–1,800 m | OK |
Top dressing guide
Recommended seed varieties
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag