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The Use of Thyme ( Thymus vulgaris ) Essential Oil for Controlling Cercospora Leaf Spot ( Cercospora beticola ) on Sugar Beets ( Beta vulgaris )

Author

Listed:
  • Agnieszka Kiniec

    (Regional Experimental Station, Institute of Plant Protection, National Research Institute, Ul. Pigwowa 16, 87-100 Torun, Poland)

  • Maciej Spychalski

    (Poznan Science and Technology Park, Adam Mickiewicz University Foundation, Ul. Rubiez 46, 61-612 Poznan, Poland)

  • Wojciech Miziniak

    (Regional Experimental Station, Institute of Plant Protection, National Research Institute, Ul. Pigwowa 16, 87-100 Torun, Poland)

  • Magdalena Palacz

    (Poznan Science and Technology Park, Adam Mickiewicz University Foundation, Ul. Rubiez 46, 61-612 Poznan, Poland)

  • Rafal Kukawka

    (Poznan Science and Technology Park, Adam Mickiewicz University Foundation, Ul. Rubiez 46, 61-612 Poznan, Poland)

Abstract

Decreasing efficacy of fungicides and the withdrawal of further hazardous active ingredients in pesticides from use have prompted the search for alternative methods of crop protection. Essential oils (EOs) are secondary metabolites of plants and have been proven to show antibacterial, antifungal, and pest-repellent properties. This study was undertaken to determine the activity of grapefruit, rosemary, pine, sage, and thyme EOs against the fungus Cercospora beticola , which is the most dangerous pathogen of sugar beet and the causal agent of Cercospora leaf spot. According to the determined Minimum Inhibitory Concentration (MIC), thyme EO was found the most effective against C. beticola . For most of the fungal isolates tested, the MIC of this EO was 0.313 mL/L. Thyme EO also inhibited the growth of multi-resistant isolates. Based on the results obtained, thyme EO was subjected to further testing in field conditions, where its efficiency in controlling C. beticola was also proven. The results indicate that the use of thyme EO may be a promising method for the protection of sugar beets, although it requires further optimization in the context of its inclusion in sustainable protection programs assuming a reduced number of synthetic fungicide treatments.

Suggested Citation

  • Agnieszka Kiniec & Maciej Spychalski & Wojciech Miziniak & Magdalena Palacz & Rafal Kukawka, 2024. "The Use of Thyme ( Thymus vulgaris ) Essential Oil for Controlling Cercospora Leaf Spot ( Cercospora beticola ) on Sugar Beets ( Beta vulgaris )," Agriculture, MDPI, vol. 14(11), pages 1-19, November.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:11:p:2017-:d:1517292
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    References listed on IDEAS

    as
    1. Rafal Kukawka & Maciej Spychalski & Marcin Smiglak & Renata Gaj, 2024. "The Biostimulation Activity of Two Novel Benzothiadiazole Derivatives in the Tomato Cultivation," Sustainability, MDPI, vol. 16(12), pages 1-18, June.
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