This experiment was conducted to examine the agronomic and economic impact of different sources of potassium (K2S04 KN03 and [K2S04 (50%) + KN03 (50%)]) in a drip irrigation system in a banana farm planted with the «Gran Enano clone (3rd harvest), in Cienaga, Colombia. In comparison with potassium sulfate, potassium nitrate increased the average weight of banana bunches in 4,6 kg (P