A predictive system for gala-leaf-spot on apple, cultivar Gala

Authors

  • Walter Ferreira Becker Epagri/Estação Experimental de Caçador
  • Yoshinori Katsurayama Epagri/Estação Experimental de São Joaquim
  • José Itamar da Silva Boneti Epagri/Estação Experimental de São Joaquim

Keywords:

Malus domestica, Colletotrichum gloeosporioides, Colletotrichum acutatum, disease, control

Abstract

Gala-leaf-spot is the most important foliar disease of apple ‘Gala’ occurring in southern Brazil
during summer. It is caused by Colletotrichum spp. Nowadays, the control is done weekly by applying contact fungicides. A predictive system to detect the beginning of the disease based on the occurrence of favorable conditions (rainfall, temperature >15oC and wetness period >10 hours) was tested in order to indicate chemical application. The occurrence of three favorable continuous days was the best indicator as a predictive system to start spraying
with fungicides in order to control this disease.

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Published

2021-07-28

How to Cite

Becker, W. F., Katsurayama, Y. ., & Boneti, J. I. da S. . (2021). A predictive system for gala-leaf-spot on apple, cultivar Gala. Agropecuária Catarinense Journal, 17(3), 64–67. Retrieved from https://publicacoes.epagri.sc.gov.br/rac/article/view/1014

Issue

Vol. 17 No. 3 (2004)

Section

Scientific note

License

Copyright (c) 2004 Agropecuaria catarinense

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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