Effects of Gamma Radiation on the Biology and Population Suppression of the Two - spotted Spider Mite , Tetranychus urticae Koch Richard
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Control of Tetranychus urticae Koch by Thyme, Lavender and Eucalyptus Essential Oils
Two spotted spider mite (TSSM), Tetranychus urticae Koch, is an important pests on bean in Markazi Province (center of Iran). To evaluate the bioacaricidal activity of extracts of three essential oils of thyme (Thymus vulgaris), lavender (Lavandula officinalis) and eucalyptus (Eucalyptus camaldulensis) against T. urticae on cherry bean (Vigna unguiculta subsp. sinensis), five different concent...
متن کاملSpatial Distribution Pattern of Tetranychus urticae Koch (Acari: Tetranychidae) on Different Rosa Cultivars in Greenhouse Tehran
The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is an economically important pest of ornamental plant in Iran. The population abundance and spatial distribution were studied on five Rosa cultivars including Maroussia, Wendela, Elderado, Wenedetta, and Hot Lady during two growing seasons of 2011 and 2012 in greenhouse. The k parameter, index of dispersion, Lloyd’s m...
متن کاملEffect of Plant Materials on Developmental Periods of Two Spotted Spider Mite, Tetranychus Urticae Koch (acari: Tetranychidae)
Low concentration of raw flower juice of Calotropis porcera (Asclepiadecae) and seed dust of Nerium oleander (Apocynacae) significantly delayed the egg to adult development of two-spotted spider mite, Tetranychus urticae Koch, for three successive generations under laboratory trial. The flower juice of C. porcera was found more effective than the seed dust of N. oleander in delaying the develop...
متن کاملControl of two–spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) by some selected chemicals
The experiment was conducted to study the effectiveness of four commonly used chemicals viz., deltamethrin, cypermethrin, malathion and sulphur against two-spotted spider mite (TSSM), Tetranychus urticae Koch on potted bean plants and on excised leaf discs. Mite population remained significantly lower in all treated plots except malathion treatment. The population of T. urticae differed signifi...
متن کاملResistance of 14 accessions/cultivars of Lycopersicon spp. to two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae), in laboratory and greenhouse
مقاومت چهارده رقم و لاین از گونه‌های مختلف جنس Lycopersicon نسبت به کنه‌ی تارتن دو‌لکه‌ای، Tetranychus urticae Koch، در آزمایشگاه و گلخانه بررسی شد. مطالعات آزمایشگاهی بر اساس دو روش زیست‌سنجی پونز (thumbtack) و دیسک برگی (leaf disk) صورت گرفت. گونه‌های Lycopersicon hirsutum و L. pennelii بیش‌ترین تعداد کنه روی پونز را داشتند. بیش‌ترین تعداد تخم (48/0 ± 15/5 تخم بر ماده در روز) رویL. pimpin...
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