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    Pharmacognosy Communications
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    Pharmacognosy Communications
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    Research Article

    Effect of Six Ethanolic Plant Derived Products on the Pre-Imago Two-spotted Spider Mite

    wadmin2By wadmin2March 25, 2013Updated:August 10, 2021No Comments2 Mins Read
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    Ashrafju Mahla1,2, Ahmadi Kamal1*, Purhemati Amin1,2 and Moshrefi Mandana1,2
    1Department of Plant Protection, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran.
    2Member of Young Researchers Society, Shahid Bahonar University of Kerman, Kerman, Iran.

    Pharmacognosy Communications,2013,3,2,24-27.
    DOI:10.5530/pc.2013.2.6
    Published:March 2013
    Type:Research Article

    ABSTRACT

    Background: Two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is one of the most destructive cosmopolitan pests of many plant families. This pest has shown resistance to many synthetic acaricides applied in the field and glasshouse. Consequently, increased global efforts have been undertaken to develop other methods of pest control such as botanical insecticides. Methods: The effects of ethanol (95%) and ethanolic extract of six plant species (Aloe vera, Calendula officinalis, Melia azedarach, Peganum harmala, Syzygium aromaticum and Juglans regia) on T. urticae were investigated under laboratory condition. Leaf disks of bean (3.3 cm diameter) were sprayed by ethanol, as negative control, control without spray and plant extracts with 5 mg.mL–1 concentration as treatments. Then new hatched larva were placed on the leaves and surveyed daily. Developmental times and mortalities of each treatment were evaluated until adult emergence. Results: The susceptibility of each developmental stage fluctuated for each plant extract. Among the applied plant derived chemicals, the greatest total mortality was recorded in M. azedarach (87.5%) and P. harmala (81.25%) treatments. Moreover, larval developmental time of the spider mite significantly increased in the both above-mention extracts.

    Keywords: Tetranychus urticae, plant extracts, mortality, acaricidal activity, developmental times

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    About Journal

    Pharmacognosy Communications [Phcog Commn.] is a quarterly journal published by Phcog.Net. It is a peer reviewed journal aiming to publish high quality original research articles, methods, techniques and evaluation reports, critical reviews, short communications, commentaries and editorials of all aspects of medicinal plant research. The journal is aimed at a broad readership, publishing articles on all aspects of pharmacognosy, and related fields. The journal aims to increase understanding of pharmacognosy as well as to direct and foster further research through the dissemination of scientific information by the publication of manuscripts. The submission of original contributions in all areas of pharmacognosy are welcome.
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