Susceptibility of pear cultivars to entomosporiosis


  • Thiago Marchi Universidade Estadual do Centro-Oeste/Eng. Agr. Mestrando em Agronomia-Produção Vegetal
  • Ires Cristina Ribeiro Oliari Universidade Estadual do Centro-Oeste/Eng. Agr. Doutoranda em Agronomia-Produção Vegetal
  • Anna Claudia Oliveira Universidade Estadual do Centro-Oeste/Biológa Mestrando em Agronomia-Produção Vegetal
  • Aline José Maia Universidade Estadual do Centro-Oeste/Eng. Agr. Pós-doutoranda
  • Rafael Piva Universidade Estadual do Centro-Oeste/Eng. Agr. Doutorando em Agronomia-Produção Vegetal
  • Renato Vasconcelos Botelho Universidade Estadual Do Centro-Oeste/Eng. Agr. Dr. Prof. Departamento de Agronomia



Entomosporium mespili, epidemiology, pathossystem, Pyrus sp


The entomosporiosis is considered a major disease of pear in Brazil, one of the most responsible for premature defoliation in plants. The objective of this study was to characterize the susceptibility of pear tree cultivars Housui, Cascatense, Packam’s Triumph and Rocha for the intensity of leaf spot entomosporiosis. The experiment was conducted at the experimental orchard of the State University of the Midwest (Unicentro), Paraná State, Guarapuava County, Brazil during the 2013/2014 season. The incidence and severity were monitored during 77 days from the beginning of the symptoms in 25 leaves of 8 plants per cultivar. With these data the following variables were calculated: early onset of symptoms (EOS), maximum incidence and severity (Imax and Smax) and the Area Under the Incidence Progress Curve (AUIPC) and Severity (AUSPC). In addition, the data were checked for severity and the best adjustments for the monomolecular, logistic and exponential models were tested. From these results it is clear that all the studied cultivars are susceptible to leaf spot entomosporiosis, however, Housui pear cultivar presented higher endurance while Rocha and Cascatense cultivars presented greater susceptibility to this disease.


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How to Cite

Marchi, T., Ribeiro Oliari, I. C., Oliveira, A. C., Maia, A. J., Piva, R., & Vasconcelos Botelho, R. (2018). Susceptibility of pear cultivars to entomosporiosis. Comunicata Scientiae, 9(1), 108–112.



Scientific Note