Development of the Neotropical brown stink bug Euschistus heros (Fabricius) on strawberry plants and mortality with a product based on Sophora flavescens
DOI:
https://doi.org/10.5433/1679-0359.2025v46n2p649Keywords:
Botanic insecticide, Fragaria × ananassa Duchesne, Oximatrine, Pentatomidae.Abstract
Euschistus heros is an important pest in soybean crops and has migrated to strawberry plants, causing injuries, mainly to strawberry fruits. This study aimed to assess the development capacity of E. heros and its ability to damage strawberry plants, as well as to evaluate its probability of survival when exposed to a commercial product based on Sophora flavescens. Two bioassays were conducted. The first was performed in a greenhouse, where plants were placed in pots and enclosed in voile cages to evaluate the longevity of the Neotropical brown stink bug on plants with and without reproductive structures. The viability of nymphs and the time required to reach the adult stage were also assessed. In the second bioassay, conducted in a laboratory, the probability of female survival was evaluated under different doses of an insecticide based on S. flavescens. The results showed that the Neotropical brown stink bug exhibits greater longevity on strawberry plants with reproductive structures. Only two females reached adulthood, and none was able to reproduce under the experimental conditions. The commercial product based on S. flavescens caused mortality in E. heros and showed potential for use in managing this pest in strawberry crops, with effectiveness starting at a dose of 3 mL L⁻¹.
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Copyright (c) 2025 Karina Calil Caparroz, Fernando Teruhiko Hata, Adriano Thibes Hoshino, Taciana Melissa de Azevedo Kuhn, Leticia Silva Martins, Maria Aparecida Cassilha Zawadneak, Amarildo Pasini

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