Pathogenicity tests confirmed infection in the Tupi and Kiowa cultivars producing the typical symptoms on leaflets at 12 and 16 days after inoculation, respectively. There were significant differences between the treatments (P < 0.001). The incidence of dryberry in the controls was 27, 24, and 18% in 2009, 2010 and 2012, respectively. The treatments that were based on potassium phosphite and glutathione-oligosaccharins resulted in the lowest incidence (0.66–13%) compared to that of the control in the 3 years of testing. B. subtilis, T. harzianum, copper sulfate, citrus seed extract and hydroxide peroxide provided the lowest level of control (15–19% incidence) compared to that of the control.