Small producers in rural communities in Itacoatiara, Amazonas, contribute to local production of
vegetables, fruits, and grains, especially when considering the agricultural vocation of each
producing municipality. However, agricultural productivity can be harmed by the occurrence of
plant diseases, both those that affect only the leaf parts resulting in direct interference with
photosynthesis and smaller fruits or grains, as well as diseases that affect the entire plant (such as
those caused by vascular pathogens and viruses), and diseases that directly affect the organ that will
be sold (the grain, fruit, leaf, or legume), making them unfit for consumption. Therefore, a
phytopathological diagnosis is necessary on the producing properties in Itacoatiara to understand
which diseases, and when and how often they appear, and thus provide a more secure basis for the
adoption of disease control measures, increase and improve the quality of local production, and
assist local producers in their production processes. The objective of this study was to identify and
quantify the incidence of plant diseases present in producing areas of the Nossa Senhora da Paz
Community in Itacoatiara - AM. Four properties in the rural area were selected to compose the
study. The study involved collecting samples of symptomatic plants, isolating phytopathogens
associated with lesions and quantifying the incidence of diseases. The diseases with the highest
incidence in crops were: yellow Sigatoka in banana trees, anthracnose in soursop and passion fruit
trees, and fusariosis in passion fruit trees, caused by fungi of the genera Mycosphaerella,
Colletotrichum and Fusarium, causal agents of Sigatoka, anthracnose and fusariosis, respectively.
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