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Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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  1. Home
  3. Primary Investigation On The Synergistic Effects Of Methyl Bromide And 1 °c Cold Treatment For Two-spotted Spider Mite (tetranychus Urticae) And The Citrus Mealybug (planococcus Citri).
  1. Home
  3. Primary Investigation On The Synergistic Effects Of Methyl Bromide And 1 °c Cold Treatment For Two-spotted Spider Mite (tetranychus Urticae) And The Citrus Mealybug (planococcus Citri).

Related Experiment Video

Application of Two-spotted Spider Mite Tetranychus urticae for Plant-pest Interaction Studies
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Primary Investigation on the Synergistic Effects of Methyl Bromide and 1 °C Cold Treatment for Two-Spotted Spider

Jin-Sung Yoo1, Jae-Ho Ban1, Ji-Eun Choi1

  • 1Department of Plant Quarantine, Animal and Plant Quarantine Agency (APQA), Gimcheon 39660, Republic of Korea.

Insects
|May 7, 2025

View abstract on PubMed

Summary
This summary is machine-generated.
Keywords:
Planococcus citriTetranychus urticaecold treatmentmethyl bromide

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Combining cold treatment with methyl bromide fumigation shows pest-specific efficacy against agricultural pests like spider mites and mealybugs. Synergistic effects vary by pest species and life stage, offering potential for reduced chemical use.

Area of Science:

  • Agricultural Entomology
  • Pest Management
  • Environmental Science

Background:

  • Global prohibition of methyl bromide due to environmental concerns necessitates alternative fumigants for fresh produce.
  • Existing methyl bromide alternatives face challenges including long treatment times and phytotoxicity, limiting their effectiveness.
  • Combined chemical and physical treatments are being explored to overcome limitations of single-agent applications.

Purpose of the Study:

  • To evaluate the synergistic effects of combining methyl bromide fumigation with cold treatment on two key agricultural pests.
  • To compare the efficacy of single methyl bromide treatment versus combined treatments against specific pest life stages.
  • To assess the potential for reduced methyl bromide usage through synergistic pest control strategies.

Main Methods:

  • Comparative study involving single methyl bromide treatment and combined methyl bromide with cold treatment.
  • Evaluation of pest mortality for two species: Tetranuchus urticae (spider mite) and Planococcus citri (citrus mealybug).
  • Assessment of treatment efficacy across different pest life stages (egg, nymph, adult).

Main Results:

  • Combined methyl bromide and cold treatment demonstrated effectiveness against nymph and adult T. urticae, but not eggs.
  • For P. citri, cold treatment following methyl bromide reduced the required fumigant dosage, indicating increased susceptibility.
  • Synergistic effects between fumigants and cold treatment were found to be pest-specific and stage-dependent.

Conclusions:

  • The combination of methyl bromide and cold treatment offers a potential strategy for managing certain agricultural pests.
  • Efficacy of combined treatments varies significantly based on pest species and their developmental stage.
  • Further research is needed to explore synergistic effects with other pests to optimize reduced methyl bromide application.