Abstract
Brazil is the world's second largest producer of citrus and the first of sweet oranges. This production is mainly concentrated in the state of São Paulo (SP) and in part of Minas Gerais (MG), a region known as the citrus belt (CB). The main phytosanitary challenges of the crop are concentrated in the CC, caused by the occurrence of huanglongbing (HLB) and postbloom fruit drop (PFD), in ad…