Optimized emamectin benzoate trunk injection: addressing temperature limitations for pine wilt disease control

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2024-10-18 DOI:10.1002/ps.8493

Min Li, Mengyao Wang, Ting Yang, Ming Xu, Yue Li, Ying Pei, Jingen Tang, Zhe Zheng, Zhaonan Sun, Guanyi Cheng, Xiaojuan Li, Huan Li, Lichao Wang, Fengmao Chen

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引用次数: 0

Abstract

BACKGROUND

Pine wilt disease (PWD), caused by the pinewood nematode Bursaphelenchus xylophilus, poses a significant threat to global forestry, resulting in extensive economic and ecological damage. Traditional trunk injection agents (TIAs) are limited by environmental factors, such as high winter temperatures and vigorous resin flow, particularly in southern China. This study aimed to develop an ordinary temperature trunk injection agent (OTTIA) for year-round application and to evaluate its performance under high-temperature conditions in comparison to commercial TIAs.

RESULTS

Extensive laboratory and field tests identified N,N-Dimethylformamide (DMF) and benzyl acetate as optimal solvents and Tween-40 as an effective emulsifier for the OTTIA formulation. The new agent was fully absorbed by Pinus massoniana within 3 h at temperatures exceeding 30 °C, outperforming existing commercial agents. Treated trees maintained comparable emamectin benzoate (EB) levels but achieved lower LC₉₀ lethal concentration values (27.65 mg L⁻¹), indicating greater efficacy. The OTTIA provided protection against PWD for ≥ 360 days postinjection. [Correction added after first online publication on 24 October 2024; In Abstract (RESULTS section), the symbol less than or equal to (≤) has been changed to greater than or equal symbol (≥) in the sentence “The OTTIA provided protection against PWD for ≥ 360 days postinjection”.]

CONCLUSION

The development of OTTIA marks a significant advancement in PWD management, offering an effective solution for high-temperature regions and potentially transforming year-round treatment strategies. The results highlight the critical role of optimizing solvent and emulsifier combinations to enhance the efficacy and application of trunk injection agents, contributing to sustainable forest management and improved protection against PWD. © 2024 Society of Chemical Industry.

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优化阿维菌素苯甲酸盐树干注射液：解决松树枯萎病防治中的温度限制问题

背景松材线虫（Bursaphelenchus xylophilus）引起的松材线虫病（PWD）对全球林业构成重大威胁，造成了广泛的经济和生态破坏。传统的树干注射剂（TIA）受到环境因素的限制，如冬季气温高、树脂流动旺盛等，尤其是在中国南方。结果通过大量的实验室和实地测试，确定 N,N-二甲基甲酰胺（DMF）和乙酸苄酯为 OTTIA 配方的最佳溶剂，吐温-40 为有效的乳化剂。在温度超过 30 °C 的情况下，新制剂可在 3 小时内被马尾松完全吸收，性能优于现有的商用制剂。处理过的树木保持了与之相当的阿维菌素苯甲酸盐（EB）水平，但达到的 LC90 致死浓度值（27.65 毫克/升-1）更低，表明药效更强。结论 OTTIA 的开发标志着枯萎病管理的重大进展，为高温地区提供了有效的解决方案，并有可能改变全年的治疗策略。研究结果凸显了优化溶剂和乳化剂组合对提高树干喷射剂的功效和应用所起的关键作用，有助于实现森林的可持续管理和提高对破坏性干旱的防护能力。© 2024 化学工业协会。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.