the effect of fenpyroximate on life table parameters of two-spotted spider mite tetranychus urticae koch was evaluated under laboratory conditions (25±20c, 60±5% rh and 16:8 l:d). data were analyzed on the basis of age-stage, two-sex life table theory. the estimated value of lc50 for t. urticae was found to be 380 ml/l. durations of total preadult stage and preoviposition period in t. urticae t...

Changes in the susceptibility and detoxifying enzyme activity were measured in laboratory strains of Banks grass mite, Oligonychus pratensis (Banks), and twospotted spider mite, Tetranychus urticae Koch, that were repeatedly exposed to three insecticides. Three strains of each mite species were exposed to one of two pyrethroids, bifenthrin, and lambda-cyhalothrin, or an organophosphate, dimetho...

The twospotted spider mite, Tetranychus urticae Koch, is a worldwide pest of numerous agronomic and horticultural plants. Sulfur fungicides are known to induce outbreaks of this pest on several crops, although mechanisms associated with sulfur-induced mite outbreaks are largely unknown. Studies were conducted during 2007-2009 in Oregon and Washington hop yards to evaluate the effect of timing ...

This study aimed to determine the effects of plant species on biological parameters Tetranychus urticae Koch and time mite infestation physiology in Ocimum basilicum L., Melissa officinalis L. Salvia Mite induced various levels oxidative stress depending duration infestation. Host plants affected T. life table parameters. The low level susceptibility was characteristic S. officinalis, which app...

The two-spotted spider mite Tetranychus urticae is one of the most polyphagous and damaging pests worldwide. behaviour differs on its various host plants this could influence crop defence strategies. We investigated perception leaf morphology by T. in relation to effects visible light selection sites which females prefer live feed. Mite chose shaded surface when smooth glabrous lemon leaves wer...

Bu çalışma 2019-2020 yıllarında Adana ili yerfıstığı yetiştiriciliği yapılan alanlarda Tetranychus urticae Koch (Acari: Tetranychidae) kırmızı formun zarar durumu ve yaygınlığının belirlenmesi amacıyla gerçekleştirilmiştir. Çalışmalar periyodik olmayan arazi çıkışları şeklinde yürütülmüştür. Periyodik Ceyhan, Yumurtalık, Yüreğir Karataş ilçelerinde survey çalışmaları yapılmıştır. her iki yılda ...

Goal of the research is to consider main concepts used in probit-analysis method, features its application determine toxicity pesticides, particular insecticides, acaricides and fungicides.
 Methods. To method was used. It consists determining dose a substance necessary achieve certain level mortality test organisms, based on transformation S-shaped «dose-effect» curve into straight line.&...

İki noktalı kırmızı örümcek, Tetranychus urticae Koch (Acari: Tetranychidae) elma bahçelerinde ekonomik kayıp oluşturan önemli zararlılardan birsidir. Kısa süreli biyolojileri nedeniyle kullanılan akarisitlere çok kısa sürede direnç geliştirmektedirler. Bu nedenle etkili bir kimyasal mücadele için T. popülasyonlarının gösterdikleri duyarlılık düzeyleri periyodik olarak izlenmelidir. çalışmada, ...