The experiment was carried out in a Xanthic Ferralsol (dystrophic Yellow Latosol) of Central Amazon with the objective to verify the effect of nitrogen and potassium rates on yield and quality of banana cultivar Thap Maeo (triploid - AAB). The experimental design was factorial randomized blocks (3x4), with the following treatments: three N rates (0, 267 and 534 kg per ha cycle - source: urea) and four K2O rates (200, 800, 1600 and 2400 kg per ha cycle - source: potassium chloride), with three replicates and two cycles of harvest. The results showed that N and K rates did not affect the diameter of fruits, acidity and total soluble solids. After the first cycle, regardless of N rates, the application of K2O rates reduced the resistance of pulp. Banana yield reduced with increased N rates. In the second cycle, K2O rates showed significant interaction with N, and the largest yield was obtained with application of 1600 kg ha-1 of K2O.
Musa spp.; urea; potassium chloride; mineral nutrition; Central Amazon
