A balanced nutrition can aid in the control of the coffee diseases. Thus, the objective was to evaluate the effect of nitrogen and potassium fertilization in a growth chamber in assessing the intensity of bacterial blight. We used the susceptible cultivar Mundo Novo 376/4. The treatments consisted of five doses of N (3, 7, 11, 15 and 19 mmol L-1) combined with five doses of K (3, 5, 7, 9 and 11 mmol L-1) in a f...