Novel Mode of Trisiloxane Application Reduces Spider Mite and Aphid Infestation of Fruiting Shrub and Tree Crops


Application of pesticides leads to contamination of the natural environment, which entails the necessity to seek solutions that use substances which do not pose ecological hazards. The presented investigations tested the efficacy of a preparation containing organomodified trisiloxane and a cross-linking agent (Siltac EC) to limit the number of two-spotted spider mite (Tetranychus urticae) on the leaves of raspberry (Rubus idaeus) and blackcurrant (Ribes nigrum), as well as the numbers of green apple aphid (Aphis pomi) on apple trees (Malus domestica). The high effectiveness (more than 90%) of Siltac against spider mite on raspberry and blackcurrant leaves was rapid and persisted at least by two- three weeks after spraying. There was observed an inhibition of pest developing (i.e. significant decrease of eggs and larvae). Similar effect occurred per an apple tree shoot and the number of living apple aphids was reduced by more than 93% in comparison to untreated trees. In all experiments, the effectiveness of Siltac was similar and usually longer lasting than control pesticides. Moreover, no phytotoxicity of the tested preparation was observed during the investigations. In conclusion, on the basis of the presented results it was found that Siltac EC could be a good alternative to the currently used plant protection chemicals.


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This work was supported by Prof. Łabanowska of the ICB R&D laboratory, ICB Biological Laboratory and Research Institute of Horticulture in Skierniewice, and by Paweł Krawiec of the University of Life Sciences in Lublin, Department of Pomology.

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Correspondence to Bartosz Bojarski.

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The five authors of this article (Michał Patrzałek, Janusz Świętosławski, Dawid Liszka, Wojciech Wieczorek, and Mariusz Kot) are employed at ICB Pharma, which has developed the Siltac EC product.

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Patrzałek, M., Bojarski, B., Lis, M.W. et al. Novel Mode of Trisiloxane Application Reduces Spider Mite and Aphid Infestation of Fruiting Shrub and Tree Crops. Silicon 12, 1449–1454 (2020).

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  • Plant protection
  • Alternative method
  • Physical mode of action