Growing Coffee (Arabica) in Laikipia

Soil suitability analysis based on Laikipia's nutrient profile

Laikipia County is a challenging environment for Coffee (Arabica) (soil-match score 32/100) and will need significant amendment before planting. At an average pH of 4.99 the soil is strongly acidic, below Coffee (Arabica)'s preferred 5–6 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 (Arabica)'s requirements, so a maintenance fertilizer programme is enough. The county's predominantly sandy loam soils suit Coffee (Arabica), which favours loam. Laikipia receives approximately 600 mm/year — well below Coffee (Arabica)'s minimum of 1000 mm — so supplemental irrigation would be essential for this crop. Coffee (Arabica)'s full potential is about 800 kg/acre (~KES 96,000/acre at KES 120/kg), but at Laikipia's 32/100 suitability a realistic target here is closer to 320 kg/acre (~KES 38,400/acre) unless the constraints above are addressed.