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Ozone in Droplets and Mist in Inhibition of Phytopathogenic Microbiota

Author

Listed:
  • Irina Tanuwidjaja

    (Department of Microbiology, University of Zagreb Faculty of Agriculture, Svetošimunska c. 25, 10000 Zagreb, Croatia)

  • Mirna Mrkonjic Fuka

    (Department of Microbiology, University of Zagreb Faculty of Agriculture, Svetošimunska c. 25, 10000 Zagreb, Croatia)

Abstract

Ozon is considered an environmentally friendly, low-cost antimicrobial treatment and an effective alternative to chemical pesticides. Ozonated water in the form of droplets and mist has been used in two concentrations (4 and 2 mg/L) against three biomasses (10 2 , 10 4 , and 10 6 CFU/mL) of phytopathogenic bacteria Erwinia amylovora , Pseudomonas syringae , and Agrobacterium tumefaciens and fungus Botrytis cinerea that infest a wide range of crops worldwide and pose a threat to global food production. Regardless of concentration, ozone dissolved in water showed a pronounced inhibitory effect on phytopathogenic bacteria when applied in the form of droplets. However, the effect was only detected when the bacterial load was not higher than 10 4 CFU/mL, indicating the necessity to treat the crops and plant materials when the bacterial load is still manageable. Unlike bacterial phytopathogens, B. cinerea was the most susceptible to treatment with aqueous ozone, regardless of the applied biomass, ozone concentration, or type of application. Total removal of high biomass of B. cinerea was achieved even with the lowest ozonated water concentration thus underlying the power of ozone in treating this particular fungal contamination.

Suggested Citation

  • Irina Tanuwidjaja & Mirna Mrkonjic Fuka, 2022. "Ozone in Droplets and Mist in Inhibition of Phytopathogenic Microbiota," Agriculture, MDPI, vol. 12(11), pages 1-15, November.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:11:p:1875-:d:967129
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    References listed on IDEAS

    as
    1. Sally A. Miller & Jorge Pinto Ferreira & Jeffrey T. LeJeune, 2022. "Antimicrobial Use and Resistance in Plant Agriculture: A One Health Perspective," Agriculture, MDPI, vol. 12(2), pages 1-27, February.
    2. Raudales, Rosa E. & Parke, Jennifer L. & Guy, Charles L. & Fisher, Paul R., 2014. "Control of waterborne microbes in irrigation: A review," Agricultural Water Management, Elsevier, vol. 143(C), pages 9-28.
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