Leveraging long‐lasting insecticide‐incorporated netting to improve fumigation efficacy against stored product insects

作者：Sabita Ranabhat, Daniel Brabec, Madison Lillich, Deanna S. Scheff, Kun Yan Zhu, Georgina V. Bingham, William R. Morrison · 发表于：Pest Management Science · 年份：2024 · DOI：10.1002/ps.8423 · 被引用次数：16 · 研究领域：Insect Pest Control Strategies、Date Palm Research Studies、Entomopathogenic Microorganisms in Pest Control

BACKGROUND: Long-lasting insecticide-incorporated netting (LLIN) has successfully been used to impair mobility and prevent infestation of stored grain by stored product beetles. Understanding how to integrate LLIN with existing integrated pest management (IPM) tactics, such as phosphine fumigation, can further enhance IPM programs. RESULTS: We used three 110 metric tons (MT) capacity grain bins, and in each, 60 perforated buckets (e.g., miniature silos) were filled with 500 g of uninfested wheat. Miniature silos were protected by LLIN (0.3% α-cypermethrin, Carifend®, BASF), positive control (without insecticide), or negative control (no netting). Half of each treatment was randomly assigned to phosphine fumigation treatment, while the remainder were not fumigated. Monthly samples of 100 g of grain from four silos from each treatment in four blocks from three-grain bins were taken between June and October both in 2022 and 2023. We determined whether phosphine fumigation could be reduced with the use of LLIN over the season. Overall, we found that silos protected with LLIN showed insect dispersal and progeny production that was reduced by 83-99% and 89-99%, respectively, compared with insecticide-free netting and no-netting controls. Additionally, damage in silos was reduced by 37-99% compared with controls. Importantly, the total number of fumigations could be reduced by 68-91% by using LLIN compared with controls. CONCLUSION: Our study demonstrates that LLIN is consistently e...