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Nano-Micro Core-Shell Fibers for Efficient Pest Trapping.

Wenjie Shangguan^1,2, Hongliang Xu², Wanlong Ding³

¹Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.

|December 4, 2023

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This study developed novel core-shell fibers for insect sex pheromones, offering extended pest control. These biodegradable fibers provide a sustainable alternative to chemical pesticides for managing agricultural pests.

Area of Science:

Materials Science
Entomology
Agricultural Science

Background:

Insect sex pheromones offer a sustainable alternative to chemical pesticides.
Optimizing pheromone release duration and preventing burst release are critical for effective pest control.

Purpose of the Study:

To develop and evaluate core-shell fibers for controlled release of insect sex pheromones.
To enhance the stability and longevity of pheromones for agricultural pest management.

Main Methods:

Core-shell fibers were fabricated using coaxial electrospinning with polycaprolactone and polyhydroxybutyrate.
The fibers' hydrophobic performance, thermal stability, and UV light transmittance were characterized.
Pheromone release kinetics and field efficacy against *Spodoptera litura* were assessed.

Keywords:

coaxial electrospinning core−shell fiber green agriculture insect sex pheromone sustained release

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Main Results:

The core-shell fibers exhibited excellent hydrophobic properties, thermal stability, and UV protection (<40% transmittance).
A significant reduction in pheromone burst release was observed, extending release duration to approximately 133 days.
Field trials demonstrated continuous and efficient trapping of *Spodoptera litura*, comparable to commercial carriers.

Conclusions:

The developed core-shell fiber structure effectively controls pheromone release, providing long-lasting pest management.
These biodegradable electrospun fibers present a promising, environmentally friendly alternative to conventional pest control methods.
This strategy offers innovative design insights for pheromone carriers in agricultural pest management.