Growing Coffee (Robusta) in Nyeri
Soil suitability analysis based on Nyeri's nutrient profile
Generally not ideal — Nyeri is poorly suited to Coffee (Robusta). Nyeri's soil (pH 5.23, strongly acidic) gives Coffee (Robusta) a suitability score of 27/100. Apply agricultural lime before planting to unlock phosphorus and lift the score.
Nyeri County is a challenging environment for Coffee (Robusta) (soil-match score 27/100) and will need significant amendment before planting. Local soils average pH 5.23 — moderately acidic and inside the 5–6.5 band Coffee (Robusta) prefers, so no lime is usually required. The main gap is nitrogen and potassium — measured at N 1.09 g/kg, P 15.5 mg/kg, K 192 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. Coffee (Robusta) prefers loam soils, while Nyeri is largely clay, so drainage and organic-matter management matter more here. At 1700 m, the county sits above Coffee (Robusta)'s preferred altitude ceiling of 1200 m, where frost risk and cold nights reduce the crop's productivity. On ShambaIQ's soil-match model, Coffee (Robusta) is the #104 soil match of the 106 crops we assess for Nyeri County. Coffee (Robusta)'s full potential is about 950 kg/acre (~KES 76,000/acre at KES 80/kg), but at Nyeri's 27/100 suitability a realistic target here is closer to 321 kg/acre (~KES 25,680/acre) unless the constraints above are addressed.
Better matched to Nyeri's soil: Macadamia, Pineapple, and Avocado — each scores higher on the same soil.
Soil & climate match
| Factor | Nyeri soil | Coffee (Robusta) needs | Status |
|---|---|---|---|
| pH | 5.23 | 5–6.5 | OK |
| Nitrogen | 1.09 g/kg | min 1.2 g/kg | Low |
| Phosphorus | 15.5 mg/kg | min 12 mg/kg | OK |
| Potassium | 192 mg/kg | min 200 mg/kg | Low |
| Rainfall | 1,200 mm | 1,500–2,500 mm | Low |
| Altitude | 1,700 m | 0–1,200 m | High |
Planting calendar for Nyeri
Long Rains· March–MayMain season here
Short Rains· October–December
Dry Season· January–March
Top dressing guide
Nyeri's nitrogen (1.09 g/kg) is 91% of the 1.2 g/kg Coffee (Robusta) needs, so the standard 1 bag/acre is raised to 1.25. Split it across two applications to limit leaching.
Seed varieties for Nyeri
Varieties suited to Nyeri's 1,700 m altitude and 1,200 mm annual rainfall — 2 of 2 coffee (robusta) varieties we list.
Economics
Fertilizer prices
Green = subsidized · (Commercial) per 50kg bag