Characterization of Trigonella foenum - graecum Derived Iron Nanoparticles and Its Potential Pesticidal Activity Against
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ORIGINAL PAPER
Characterization of Trigonella foenum-graecum Derived Iron Nanoparticles and Its Potential Pesticidal Activity Against Tuta absoluta (Lepidoptera) Govindaraju Ramkumar1 • Ramasamy Asokan1 • Suseenther Ramya2 • Ganeshan Gayathri2 Received: 12 February 2020 Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Indiscriminate use of synthetic chemicals for pest management in agriculture leads to resistance development by the pests in addition to being toxic to non target organisms. In the present study, synthesized T. foenum-graecum leaf based iron oxide nanoparticles (FeNPs), and their insecticidal potential against serious invasive pest of South American leaf miner Tuta absoluta (Lepidoptera). The synthesized iron oxide nanoparticles (FeNPs) were characterized through, UV–Vis spectroscopy, FT-IR, EDaX, XRD, and SEM analysis. Our results shows that, synthesized nanoparticles FeNPs showed minimum 50% mortality at 48 h and maximum 72% mortality at 96 h was observed in 100 lg ml-1. The low level of LC50 147.32 and LC90 198.0 ll ml-1 was obtained. The results confers T. foenum-graecum leaf extract derived green iron oxide nanoparticles (FeNPs) as a very effective green biopesticide for control of Tuta absoluta. In the conclusion of the study that nanotechnology may prove beneficial in agricultural forming without chemical pesticides in future. Keywords Tuta absoluta Larvicide Trigonella foenum-graecum Iron oxide FeNPs
Introduction Lycopersicon esculentum Mill. is one of the most widely grown and consumed vegetable. China is the leading tomato producer, Egypt and India together account for more than one-fifth of the world production which is nearly 129 million tons worldwide [1]. The tomato pinworm, Tuta absoluta (Lepidoptera: Gelechiidae) is an important lepidopteron pests of tomato, it originated from South America and has spread to Europe, Africa and across Asia [2–4]. It is considered to be one of the major limiting factors for tomato production in the Tuta infested regions accounting for about 70% of crop loss [5, 6]. Tuta absoluta (Lepidoptera: Gelechiidae) has been detected in several countries in particularly as an invasive & Govindaraju Ramkumar [email protected] 1
Bio-Pesticide Laboratory, Division of Biotechnology, ICARIndian Institute of Horticultural Research (IIHR), Hessaraghatta Lake Post, Bangalore, Karnataka, India
2
Department of Microbiology, D.K.M. College for Women’s, Vellore, Tamil Nadu 632001, India
pest in India and other part of the world. This pest is crossing borders and devastating tomato production in both protected and opens fields and is considered as challenging pest to control [7]. Owing to the increasing environmental hazards and enhanced resistance towards chemical insecticides, has prompted active research in alternative control strategies. Discovery of novel phytochemicals with promising properties finds its application in different domains including pest management. Botanicals are beco
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