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<p>The effectiveness of fluopyram suspension concentrate against pine wilt disease (PWD) is limited by spraying efficiency and water dependence. A traditional dust formulation with strong dispersibility can overcome these shortcomings. However, its efficacy against PWD remains uncertain. This study evaluated the translocation of fluopyram dust within tree tissues, soil and water degradation, and its effective control against PWD. Nursery tests showed effective prevention; field tests showed dust absorption and translocation into pine tissues. Thirty days following application, residual concentrations in soil were low at 0.09&#xa0;mg&#xa0;kg<sup>−1</sup>; no detectable residues were found in water samples. Three years after applying fluopyram, its effectiveness increased to approximately 87%. Based on this study, fluopyram had a half-life of 346 d with persistence lasting up to three years. This provides valuable insight for managing PWD through dust applications.</p>

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Control efficacy and persistence of fluopyram dust against pine wilt disease

  • 期刊论文

  • 发表日期：

    2025年3月22日

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  • Yajie Guo,
  • Jiayi Ma,
  • Mingqing Weng,
  • Rebeca Carballar-Lejarazú,
  • Wenlong Jiao,
  • Jieqin Wu,
  • Feiping Zhang,
  • Songqing Wu

摘要

The effectiveness of fluopyram suspension concentrate against pine wilt disease (PWD) is limited by spraying efficiency and water dependence. A traditional dust formulation with strong dispersibility can overcome these shortcomings. However, its efficacy against PWD remains uncertain. This study evaluated the translocation of fluopyram dust within tree tissues, soil and water degradation, and its effective control against PWD. Nursery tests showed effective prevention; field tests showed dust absorption and translocation into pine tissues. Thirty days following application, residual concentrations in soil were low at 0.09 mg kg−1; no detectable residues were found in water samples. Three years after applying fluopyram, its effectiveness increased to approximately 87%. Based on this study, fluopyram had a half-life of 346 d with persistence lasting up to three years. This provides valuable insight for managing PWD through dust applications.