Bioassay Study of Azadirachtin And Plumbagin on Pericallia ricini (Lepidoptera: Arctiidae)

Gnanamani. R^1*, Ramanathan. B² and Indira Rani. G³

¹Department of Zoology, Yadava College, Madurai, Tamil Nadu India.

²Department of Zoology, V.O. Chidambaram College, Thoothukudi, Tamil Nadu India.

³Department of Zoology, EMG Yadava Women’s College, Madurai, Tamil Nadu, India.

Corresponding Author E-mail:gnanamani87@gmail.com

DOI : http://dx.doi.org/10.12944/CARJ.12.1.19

Abstract:

In recent years, the overuse of commercially obtainable synthetic pesticides against phytophagous insects has augmented their bioaccumulation in the biosphere, foremost to increased resistance and reduced soil biodiversity. Moreover, extreme uses of insecticides enter various environmental resources as an outcome of overflow, initiating deleterious health problems to agriculturalists and consumers of agricultural products. Hence, more attention is being paid towards the expansion of substitute eco-friendly insecticides that will help in an effective pest management system and also prevent longstanding exposure that causes diseases. As a result, important ecologically friendly and harmless alternative practice strategies to artificial compounds are essential.  Azadirachtin and plumbagin (phytoproducts) have been identified as an extraordinary biocontrol agent with low toxicity and high efficacy among many plant products for latent chemotherapeutic compounds in plant pest and disease management systems. The biocidal effectiveness of neem is attributed to its azadirachtin active ingredient, which affect some metabolic processes in insects such as protein synthesis, deviations in biological fitness, reduced sexual communication, and chitin synthesis. Similarly, Plumbagin (Napthaquinones) have established substantial attention in agricultural chemistry because of a novel action mode, extremely high activity against a broad spectrum of insects, low acute toxicity to mammals, and environmentally benign characteristics. The present study indicated that Azadirachtin and Plumbagin can be significant alternatives to Chemical insecticides for Pericallia ricini control in short-cycle crops.

Keywords:

Azadirachtin; Biocontrol; Pericallia ricini; Pest management; Plumbagin

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