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

        DOI:

        https://doi.org/10.52945/rac.v17i3.1014

        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

        2004-07-28

        Issue

        Vol. 17 No. 3 (2004)

        Section

        Scientific Note Article

        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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        How to Cite

        A predictive system for gala-leaf-spot on apple, cultivar Gala. (2004). Agropecuária Catarinense Journal, 17(3), 64-67. https://doi.org/10.52945/rac.v17i3.1014