Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions
In the present study, the effect of two different formulations (NCH1 and NCH2) of <i>trans</i>-anethole was examined against hop flea beetles, <i>Psylliodes attenuatus</i> in field conditions. Products were applied in different locations in the spring seasons of 2019–2021. In...
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MDPI AG
2025-05-01
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| Series: | Agronomy |
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| author | Kateřina Kovaříková Roman Pavela Karel Krofta Josef Vostřel |
| author_facet | Kateřina Kovaříková Roman Pavela Karel Krofta Josef Vostřel |
| author_sort | Kateřina Kovaříková |
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| description | In the present study, the effect of two different formulations (NCH1 and NCH2) of <i>trans</i>-anethole was examined against hop flea beetles, <i>Psylliodes attenuatus</i> in field conditions. Products were applied in different locations in the spring seasons of 2019–2021. In 2019, 0.5% and 1% concentrations of both formulations were used so that the effective field dose could be determined. Doses of 1% for both formulations were shown to be more efficient. In 2020, experiments with this dose were carried out in two localities in order to select a more suitable formulation of the product (NCH1 vs. NCH2). The NCH1 formulation was shown to be more effective. After application, there was a significant reduction in the number of flea beetles compared to the control (<i>p</i> < 0.0001). On the other hand, no significant difference was found between the non-treated plot and the NCH2 formulation. In the third year of the experiment (2021), it was found that the number of <i>P. attenuatus</i> on plants treated with NCH1 encapsulation was significantly lower than in the untreated control (<i>p</i> < 0.0001). Residues of <i>trans</i>-anethole degraded immediately; thus, the product is suitable for use in the summer to protect the hop cones before harvest. |
| format | Article |
| id | doaj-art-bf3debd373164dcd981d1332f9c157f3 |
| institution | Kabale University |
| issn | 2073-4395 |
| language | English |
| publishDate | 2025-05-01 |
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| spelling | doaj-art-bf3debd373164dcd981d1332f9c157f32025-08-20T03:26:09ZengMDPI AGAgronomy2073-43952025-05-01156131110.3390/agronomy15061311Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field ConditionsKateřina Kovaříková0Roman Pavela1Karel Krofta2Josef Vostřel3Czech Agrifood Research Center, Drnovská 507, 161 06 Prague, Czech RepublicCzech Agrifood Research Center, Drnovská 507, 161 06 Prague, Czech RepublicHop Research Institute Co., Ltd., Kadaňská 2525, 438 01 Žatec, Czech RepublicHop Research Institute Co., Ltd., Kadaňská 2525, 438 01 Žatec, Czech RepublicIn the present study, the effect of two different formulations (NCH1 and NCH2) of <i>trans</i>-anethole was examined against hop flea beetles, <i>Psylliodes attenuatus</i> in field conditions. Products were applied in different locations in the spring seasons of 2019–2021. In 2019, 0.5% and 1% concentrations of both formulations were used so that the effective field dose could be determined. Doses of 1% for both formulations were shown to be more efficient. In 2020, experiments with this dose were carried out in two localities in order to select a more suitable formulation of the product (NCH1 vs. NCH2). The NCH1 formulation was shown to be more effective. After application, there was a significant reduction in the number of flea beetles compared to the control (<i>p</i> < 0.0001). On the other hand, no significant difference was found between the non-treated plot and the NCH2 formulation. In the third year of the experiment (2021), it was found that the number of <i>P. attenuatus</i> on plants treated with NCH1 encapsulation was significantly lower than in the untreated control (<i>p</i> < 0.0001). Residues of <i>trans</i>-anethole degraded immediately; thus, the product is suitable for use in the summer to protect the hop cones before harvest.https://www.mdpi.com/2073-4395/15/6/1311field experimenthop flea beetlehop protection<i>Psylliodes attenuatus</i><i>trans</i>-anethole |
| spellingShingle | Kateřina Kovaříková Roman Pavela Karel Krofta Josef Vostřel Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions Agronomy field experiment hop flea beetle hop protection <i>Psylliodes attenuatus</i> <i>trans</i>-anethole |
| title | Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions |
| title_full | Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions |
| title_fullStr | Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions |
| title_full_unstemmed | Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions |
| title_short | Use of <i>Trans</i>-Anethole Against Hop Flea Beetles in Field Conditions |
| title_sort | use of i trans i anethole against hop flea beetles in field conditions |
| topic | field experiment hop flea beetle hop protection <i>Psylliodes attenuatus</i> <i>trans</i>-anethole |
| url | https://www.mdpi.com/2073-4395/15/6/1311 |
| work_keys_str_mv | AT katerinakovarikova useofitransianetholeagainsthopfleabeetlesinfieldconditions AT romanpavela useofitransianetholeagainsthopfleabeetlesinfieldconditions AT karelkrofta useofitransianetholeagainsthopfleabeetlesinfieldconditions AT josefvostrel useofitransianetholeagainsthopfleabeetlesinfieldconditions |