Growing Coffee (Robusta) in Siaya

Soil suitability analysis based on Siaya's nutrient profile

Coffee (Robusta) can be grown in Siaya County, but the soil scores 54/100 and needs targeted management to reach full potential. Local soils average pH 5.33 — moderately acidic and inside the 5–6.5 band Coffee (Robusta) prefers, so no lime is usually required. The main gap is potassium — measured at N 1.2 g/kg, P 12.1 mg/kg, K 134 mg/kg against this crop's high/medium/high demand — so the fertilizer plan below prioritises closing that deficit. The county's predominantly clay loam soils suit Coffee (Robusta), which favours loam. 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.