Combating Spodoptera frugiperda (Lepidoptera: Noctuidae) with Moringa-Synthesized Silica Nanoparticles and Its Combination with Some Insecticides.

IF 1.4 3区 农林科学 Q2 ENTOMOLOGY Neotropical Entomology Pub Date : 2024-12-01 Epub Date: 2024-10-22 DOI:10.1007/s13744-024-01210-0
Amany D Abd-Elnabi, Mohamed E I Badawy
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Abstract

The fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), is a major agricultural pest known for developing resistance to insecticides. This study investigated a novel approach to manage FAW by silica nanoparticles (SiNPs) synthesized from eco-friendly leaf extract of Moringa oleifera Lam. (Moringaceae). This green synthesis method offers a sustainable and potentially safer alternative to traditional chemical processes. SiNP formation was confirmed by various techniques: UV-visible spectrophotometer, X-ray spectroscopy with energy-dispersive (EDX), scanning electron microscopy (SEM), and dynamic light scattering (DLS). The effectiveness of SiNPs alone and their combination with three common insecticides (emamectin benzoate, indoxacarb, and chlorpyrifos) were evaluated against third instar larvae of fall armyworm. While SiNPs after 24 h by leaf dipping method recorded limited insecticidal activity (LC50 = 9947.59 mg/L), it significantly enhanced the potency of all three insecticides. Combining SiNPs with emamectin benzoate resulted in the most dramatic increase in effectiveness compared to the insecticide alone with LC50 = 0.295 mg/L and 0.42 mg/L, respectively. This research suggests that moringa extract can be a valuable resource for the green synthesis of nanoparticles potentially useful in pest control. This approach could potentially reduce the amount of insecticide needed for effective pest control, leading to a more sustainable and environmentally friendly agricultural practice.

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利用辣木合成的纳米二氧化硅颗粒及其与某些杀虫剂的结合防治鞘翅目蚜虫(鳞翅目:夜蛾科)。
秋虫(Spodoptera frugiperda (J. E. Smith))是一种以对杀虫剂产生抗药性而闻名的主要农业害虫。本研究调查了一种新的方法,即通过从环保的 Moringa oleifera Lam.(桑科)叶提取物合成的硅纳米粒子(SiNPs)。这种绿色合成方法可替代传统的化学工艺,具有可持续性和潜在的安全性。SiNP 的形成得到了各种技术的证实:紫外可见分光光度计、能量色散 X 射线光谱(EDX)、扫描电子显微镜(SEM)和动态光散射(DLS)。评估了 SiNPs 单独使用以及与三种常见杀虫剂(苯甲酸阿维菌素、茚虫威和毒死蜱)复配使用对秋季大青虫三龄幼虫的防治效果。虽然 SiNPs 在浸叶法 24 小时后的杀虫活性有限(LC50 = 9947.59 mg/L),但它显著增强了所有三种杀虫剂的效力。与单独使用杀虫剂相比,将 SiNPs 与苯甲酸阿维菌素结合使用的杀虫效果提高最为显著,LC50 分别为 0.295 毫克/升和 0.42 毫克/升。这项研究表明,辣木提取物是绿色合成纳米粒子的宝贵资源,可用于害虫控制。这种方法有可能减少有效控制害虫所需的杀虫剂用量,从而实现更可持续、更环保的农业实践。
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来源期刊
Neotropical Entomology
Neotropical Entomology 生物-昆虫学
CiteScore
3.30
自引率
5.60%
发文量
69
审稿时长
6-12 weeks
期刊介绍: Neotropical Entomology is a bimonthly journal, edited by the Sociedade Entomológica do Brasil (Entomological Society of Brazil) that publishes original articles produced by Brazilian and international experts in several subspecialties of entomology. These include bionomics, systematics, morphology, physiology, behavior, ecology, biological control, crop protection and acarology.
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