Growing Coffee (Robusta) in Laikipia

Soil suitability analysis based on Laikipia's nutrient profile

Laikipia County is a challenging environment for Coffee (Robusta) (soil-match score 8/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly acidic, below Coffee (Robusta)'s preferred 5–6.5 range; agricultural lime will lift pH and unlock phosphorus the crop cannot otherwise access. Nitrogen (1.42 g/kg), phosphorus (16.6 mg/kg) and potassium (215 mg/kg) all meet Coffee (Robusta)'s requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Coffee (Robusta), which favours loam. Laikipia receives approximately 600 mm/year — well below Coffee (Robusta)'s minimum of 1500 mm — so supplemental irrigation would be essential for this crop. At current prices (about KES 80/kg) and a typical 950 kg/acre yield, a well-managed Coffee (Robusta) crop here can gross roughly KES 76,000 per acre.