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Lethal and sub-lethal effects of garlic extracts on females and eggs of Tetranychus urticae Koch (Tetranychidae)

Mohaddeseh Mohammadebrahimi,K. Ahmadi

Published 2021 in Archives of Phytopathology and Plant Protection

ABSTRACT

Abstract Two spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) is one of the most important polyphagous pest on a wide range of cultivated, outdoor and protected crops worldwide. In this study, lethal and sub-lethal effects of garlic, Allium sativum Linnaeus extracts on the females and eggs of T. urticae was evaluated in laboratory conditions. The results showed that the mortality percentages of the females of T. urticae were significantly increased in the treated specimens compared with the controls in garlic ethanol extract treatment (88.52 ± 3.45%). Moreover, in the highest and lowest duration of embryonic development were recorded in ethanol with 6.09 ± 0.03 and acetic acid with 3.87 ± 0.07 days, respectively. Generally, the garlic extract had the appreciable effect from the viewpoint of mortality and sub-lethal effect (reduction of the oviposition). With carrying out further complimentary research these botanical compounds can be used in integrated pest management. Graphical Abstract

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