Growing Rice (Upland) in Kitui
Soil suitability analysis based on Kitui's nutrient profile
Generally not ideal — Kitui is poorly suited to Rice (Upland). Kitui's soil (pH 7.03, near-neutral) gives Rice (Upland) a suitability score of 27/100. Match fertilizer to Kitui's nitrogen and phosphorus levels for the best result.
Kitui County is a challenging environment for Rice (Upland) (soil-match score 27/100) and will need significant amendment before planting. At an average pH of 7.03 the soil sits above Rice (Upland)'s preferred 5–7 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.74 g/kg, P 30.5 mg/kg, K 339 mg/kg against this crop's high/medium/medium demand — so the fertilizer plan below prioritises closing that deficit. Rice (Upland) prefers clay soils, while Kitui is largely sandy loam, so drainage and organic-matter management matter more here. Kitui receives approximately 500 mm/year — well below Rice (Upland)'s minimum of 800 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Rice (Upland) is the #75 soil match of the 106 crops we assess for Kitui County. Rice (Upland)'s full potential is about 1,800 kg/acre (~KES 189,000/acre at KES 105/kg), but at Kitui's 27/100 suitability a realistic target here is closer to 608 kg/acre (~KES 63,840/acre) unless the constraints above are addressed.
Better matched to Kitui's soil: Mango, Sisal, and Moringa — each scores higher on the same soil.
Soil & climate match
| Factor | Kitui soil | Rice (Upland) needs | Status |
|---|---|---|---|
| pH | 7.03 | 5–7 | Adjust |
| Nitrogen | 0.74 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 30.5 mg/kg | min 12 mg/kg | OK |
| Potassium | 339 mg/kg | min 150 mg/kg | OK |
| Rainfall | 500 mm | 800–2,000 mm | Low |
| Altitude | 900 m | 0–1,300 m | OK |
Top dressing guide
Kitui's nitrogen (0.74 g/kg) is 62% of the 1.2 g/kg Rice (Upland) needs, so the standard 1 bag/acre is raised to 1.5. Split it across two applications to limit leaching.
Seed varieties for Kitui
Varieties suited to Kitui's 900 m altitude and 500 mm annual rainfall — 1 of 2 rice (upland) varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag