Research Article

Effects of Aqueous Plant Extracts on Adult Females Tetranychus urticae Koch (Acari: Tetranychidae)

Volume: 28 Number: 2 March 27, 2025
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Effects of Aqueous Plant Extracts on Adult Females Tetranychus urticae Koch (Acari: Tetranychidae)

Abstract

The Two-spotted spider mite, Tetranychus urticae Koch,1836 (Acari: Tetranychidae), reduces quality and yield in cultivated plants. The most widely employed method for controlling this mite is the application of chemical acaricides. However, over time, researchers have focused on the adverse effects such as resistance, side effects on beneficial organisms, and environmental issues. In this laboratory study, the acaricidal effects of aqueous extracts of Juglans regia, Dieffenbachia amoena, Lantana camara, Eucalyptus globulus, and Nerium oleander against T. urticae were investigated. Plant extracts at concentrations of 1%, 3%, 6%, and 12% (v/v) were applied to T. urticae adult females using leaf dipping and spraying methods. The numbers of dead and live individuals were evaluated 24, 72, and 144 hours after the applications. In the dipping method, the highest contact effect was obtained in J. regia and D. amoena at 12% concentration at 99.6 and 94.5%, respectively, 144 hours after treatments. Conversely, at the same time and at 1% concentration, L. camara extract exhibited a low contact effect of 20.68%. Juglans regia extract at 12% concentration showed the highest effect and reached a 71% mortality rate at the end of 24 hours in the dipping method, The lowest effect (10.8% mortality rate) was obtained with L. camara at 1% concentration, and the same duration. Dieffenbachia amoena showed the highest toxicity with an LC50 value of 2561 mg L-1 in the spraying method, while the lowest toxicity was found in the E. globulus application (4388 mg L-1). This study revealed that aqueous plant extracts showed toxic effects on T. urticae.

Keywords

Supporting Institution

General Directorate of Agricultural Research and Policies

Thanks

The author would like to thank the Directorate of Central Research Institute for Plant Protection, Ankara, Türkiye and Biological Control Research Institute Directorate, Adana, Türkiye for the support provided throughout the research work. This study was supported by Republic of Türkiye Ministry of Agriculture And Forestry General Directorate of Agricultural Research and Policies. This supporter provided all materials used in experimental

References

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Details

Primary Language

English

Subjects

Pesticides and Toxicology , Acarology in Agriculture

Journal Section

Research Article

Early Pub Date

March 20, 2025

Publication Date

March 27, 2025

Submission Date

June 3, 2024

Acceptance Date

January 17, 2025

Published in Issue

Year 2025 Volume: 28 Number: 2

APA
Alpkent, Y. N. (2025). Effects of Aqueous Plant Extracts on Adult Females Tetranychus urticae Koch (Acari: Tetranychidae). Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 28(2), 504-515. https://doi.org/10.18016/ksutarimdoga.vi.1494890


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