Growing Coffee (Arabica) in Tana River

Soil suitability analysis based on Tana River's nutrient profile

Tana River County is a challenging environment for Coffee (Arabica) (soil-match score 0/100) and will need significant amendment before planting. At an average pH of 6.4 the soil sits above Coffee (Arabica)'s preferred 5–6 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen, phosphorus, and potassium — measured at N 1.04 g/kg, P 8.5 mg/kg, K 108 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. Coffee (Arabica) prefers loam soils, while Tana River is largely sandy, so drainage and organic-matter management matter more here. Tana River receives approximately 400 mm/year — well below Coffee (Arabica)'s minimum of 1000 mm — so supplemental irrigation would be essential for this crop. At current prices (about KES 120/kg) and a typical 800 kg/acre yield, a well-managed Coffee (Arabica) crop here can gross roughly KES 96,000 per acre.