Growing Coffee (Robusta) in Homa Bay

Soil suitability analysis based on Homa Bay's nutrient profile

Coffee (Robusta) can be grown in Homa Bay County, but the soil scores 45/100 and needs targeted management to reach full potential. Local soils average pH 5.27 — 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 1.05 g/kg, P 13.8 mg/kg, K 147 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing those deficits. The county's predominantly clay loam soils suit Coffee (Robusta), which favours loam. Homa Bay receives approximately 1100 mm/year — well below Coffee (Robusta)'s minimum of 1500 mm — so supplemental irrigation would be essential for this crop. Coffee (Robusta)'s full potential is about 950 kg/acre (~KES 76,000/acre at KES 80/kg), but at Homa Bay's 45/100 suitability a realistic target here is closer to 534 kg/acre (~KES 42,720/acre) unless the constraints above are addressed.