<abstract xmlns="http://www.w3.org/1999/xhtml"><p><italic>Septoria carvi</italic> is an important pathogen of caraway. With the increasing occurrence of septoriosis of caraway during warm and humid growing seasons, the possibility of limiting the growth and development of the fungus was investigated. In vitro studies included 2 preparations of natural origin, <italic>ie</italic> Biosept Active, Beta-chikol and 12 fungicides from different chemical groups, as well as one isolate K 1806 <italic>S. carvi,</italic> obtained from caraway. Tests were performed by poisoning the culture media. The percentage of inhibition of the growth of four- and eight-day-old fungus colonies on the medium with preparations in comparison to the control colonies was a measure of the toxic activity of the preparations. The effectiveness of Beta-chikol in limiting <italic>S. carvi</italic> colony growth was significantly higher than the efficiency of Biosept Active. All tested fungicides limited the growth of the fungus colony and their inhibitory effect increased with the concentration of the active ingredient in the medium. The most effective preparation <italic>in vitro</italic> was Signum 33 WG, belonging to the strobilurin compounds. <italic>In vivo</italic> studies investigated the effect of Beta-chikol, Biosept Active and Dithane NeoTec 75 WG on the health of caraway plants. The occurrence of septoriosis was determined basing on the presence of disease symptoms and the mycological analysis of diseased plants. A significant reduction of septoriosis symptoms on plants and plant colonization by the fungus was caused by Biosept Active and Dithane NeoTec 75WG.</p></abstract>

Septoria carvi is an important pathogen of caraway. With the increasing occurrence of septoriosis of caraway during warm and humid growing seasons, the possibility of limiting the growth and development of the fungus was investigated. In vitro studies included 2 preparations of natural origin, ie Biosept Active, Beta-chikol and 12 fungicides from different chemical groups, as well as one isolate K 1806 S. carvi, obtained from caraway. Tests were performed by poisoning the culture media. The percentage of inhibition of the growth of four- and eight-day-old fungus colonies on the medium with preparations in comparison to the control colonies was a measure of the toxic activity of the preparations. The effectiveness of Beta-chikol in limiting S. carvi colony growth was significantly higher than the efficiency of Biosept Active. All tested fungicides limited the growth of the fungus colony and their inhibitory effect increased with the concentration of the active ingredient in the medium. The most effective preparation in vitro was Signum 33 WG, belonging to the strobilurin compounds. In vivo studies investigated the effect of Beta-chikol, Biosept Active and Dithane NeoTec 75 WG on the health of caraway plants. The occurrence of septoriosis was determined basing on the presence of disease symptoms and the mycological analysis of diseased plants. A significant reduction of septoriosis symptoms on plants and plant colonization by the fungus was caused by Biosept Active and Dithane NeoTec 75WG.

Harmfulness of <italic>Septoria carvi</italic> Syd. towards caraway and preparations limiting occurrence of fungus

Department of Phytopathology and Mycology, University of Life Sciences in Lublin, ul. S. Leszczyńskiego 7, 20-069 Lublin, Poland, phone +48 81 524 81 42, fax +48 81 524 81 42

Ecological Chemistry and Engineering S

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Harmfulness of  Syd. towards caraway and preparations limiting occurrence of fungus

Septoria carvi is an important pathogen of caraway. With the increasing occurrence of septoriosis of caraway during warm and humid growing seasons, the...

Harmfulness of Septoria carvi Syd. towards caraway and preparations limiting occurrence of fungus

Published Online: Jul 07, 2016

Page range: 333 - 346

DOI: https://doi.org/10.1515/eces-2016-0023

Keywords
caraway, septoriosis, preparations of natural origins, fungicides

© 2016 Ewa Zalewska, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Harmfulness of Septoria carvi Syd. towards caraway and preparations limiting occurrence of fungus

Published Online: Jul 07, 2016

Page range: 333 - 346

DOI: https://doi.org/10.1515/eces-2016-0023

Keywordscaraway, septoriosis, preparations of natural origins, fungicides

© 2016 Ewa Zalewska, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
caraway, septoriosis, preparations of natural origins, fungicides