Biopesticides — Revision Notes

⚡ 30-Second Revision

Definition — Natural pest control agents (microbes, plants, biochemicals).
Types — Microbial (Bt, Trichoderma, NPV), Botanical (Neem), Biochemical (Pheromones).
Advantages — Specific, eco-friendly, residue-free, safer.
Disadvantages — Shorter shelf-life, slower action, variable efficacy.
Regulation — CIB&RC (Insecticides Act, 1968), GEAC (GM variants).
Policy — NMNF, PKVY (promote adoption).
Key Examples — *Bacillus thuringiensis*, *Trichoderma spp.*, Neem, NPV.
Core Principle — Sustainable agriculture, IPM.

2-Minute Revision

Biopesticides are naturally derived pest control agents, offering a sustainable alternative to chemical pesticides. They are categorized into microbial (e.g., *Bacillus thuringiensis* for insect larvae, *Trichoderma spp.

* for fungal diseases, Nuclear Polyhedrosis Virus for specific caterpillars), botanical (e.g., neem extracts acting as antifeedants), and biochemical (e.g., pheromones for mating disruption). Their primary advantages include high target specificity, minimal environmental impact, reduced chemical residues on crops, and enhanced safety for humans and beneficial organisms.

This makes them crucial for organic farming certification process and sustainable agriculture practices .

However, challenges persist, such as shorter shelf-life, sensitivity to environmental conditions leading to variable efficacy, and often slower action compared to chemical counterparts. In India, the Central Insecticides Board & Registration Committee (CIB&RC) regulates their registration and use under the Insecticides Act, 1968, with GEAC overseeing genetically modified variants.

Government initiatives like the National Mission on Natural Farming (NMNF) and Paramparagat Krishi Vikas Yojana (PKVY) actively promote their adoption, recognizing their role in achieving food security and environmental sustainability.

For UPSC, focus on types, examples, pros/cons, regulatory bodies, and policy linkages.

5-Minute Revision

Biopesticides are a vital component of modern sustainable agriculture practices , utilizing natural organisms or their by-products for pest and disease control. They are broadly classified into: Microbial biopesticides (bacteria like *Bacillus thuringiensis* (Bt) which produces toxins, fungi like *Trichoderma spp.

* for disease suppression, and viruses like Nuclear Polyhedrosis Virus (NPV) for specific insect larvae); Botanical biopesticides (plant extracts such as neem-based products containing azadirachtin, acting as antifeedants and growth regulators); and Biochemical biopesticides (naturally occurring substances like pheromones that disrupt insect mating).

Each type has a distinct mode of action, ensuring targeted pest management.

The key advantages of biopesticides include their high target specificity, minimal environmental impact (biodegradable, non-toxic to beneficial insects), negligible chemical residues on crops (crucial for organic farming certification process ), and improved safety for farm workers and consumers. They also play a crucial role in integrated pest management strategies and in managing pest resistance to chemical pesticides.

However, challenges to their widespread adoption include their generally shorter shelf-life, sensitivity to environmental factors (UV, temperature) leading to variable field efficacy, slower action compared to synthetic chemicals, and sometimes higher initial costs. Issues of farmer awareness, inconsistent product quality, and competition from subsidized chemical pesticides also exist.

In India, the regulatory framework is primarily managed by the Central Insecticides Board & Registration Committee (CIB&RC) under the Insecticides Act, 1968, which registers biopesticides based on efficacy and safety data.

The Genetic Engineering Appraisal Committee (GEAC) is involved for genetically modified biopesticides. Policy support comes from initiatives like the National Mission on Natural Farming (NMNF) and Paramparagat Krishi Vikas Yojana (PKVY), which actively promote chemical-free and organic farming, thereby boosting biopesticide demand.

The proposed Pesticide Management Bill aims to further streamline and strengthen this framework. For UPSC, understanding these interconnections between science, policy, and practical agriculture is paramount.

Prelims Revision Notes

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Definition — Biologically derived pest control agents (bacteria, fungi, viruses, plants, biochemicals).
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Types & Examples

* Microbial: *Bacillus thuringiensis* (Bt - bacteria, targets lepidopterans), *Trichoderma spp.* (fungi, biofungicide for soil-borne diseases), Nuclear Polyhedrosis Virus (NPV - virus, targets specific caterpillars like *Helicoverpa armigera*). * Botanical: Neem (Azadirachtin - plant extract, antifeedant, IGR). * Biochemical: Pheromones (mating disruption).

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Modes of Action — Infection (microbial), Antifeedancy/Repellency (botanical), Mating Disruption (biochemical).
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Advantages — Target-specific, eco-friendly, biodegradable, low residue, safer for non-targets/humans, resistance management tool.
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Disadvantages — Shorter shelf-life, sensitive to environmental factors (UV, temp), slower action, variable efficacy, specific application requirements.
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Regulatory Bodies (India)

* CIB&RC: Central Insecticides Board & Registration Committee. Primary body for registration under Insecticides Act, 1968. * GEAC: Genetic Engineering Appraisal Committee. For GM biopesticides/organisms.

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Policy Initiatives (India)

* NMNF: National Mission on Natural Farming (promotes chemical-free farming). * PKVY: Paramparagat Krishi Vikas Yojana (promotes organic farming clusters). * Pesticide Management Bill (Proposed): Aims to replace 1968 Act, streamline biopesticide regulation.

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Key Concepts — IPM, Organic Farming, Sustainable Agriculture, Residue-Free Agriculture.
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Comparison with Chemical Pesticides — Biopesticides are specific, slow, short shelf-life, low impact. Chemicals are broad, fast, long shelf-life, high impact.
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Vyyuha Connect — Link to agricultural biotechnology applications , integrated pest management strategies , organic farming certification process , biotechnology regulatory framework .

Mains Revision Notes

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Introduction — Define biopesticides as sustainable alternatives, crucial for India's agricultural future.
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Potential/Advantages

* Environmental: Reduces chemical pollution (soil, water), preserves biodiversity (beneficial insects), promotes soil health. * Health & Safety: Residue-free food, safer for farmers/consumers. * Economic: Access to organic/export markets, resistance management (reduces long-term chemical costs). * Policy Alignment: Supports NMNF, PKVY, sustainable agriculture practices .

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Challenges in Adoption

* Technical: Shorter shelf-life, variable efficacy (environmental sensitivity), slower action, specific application needs. * Economic: Higher initial cost for some, competition from subsidized chemicals. * Awareness & Quality: Lack of farmer knowledge, inconsistent product quality, limited extension services. * Regulatory: Bureaucratic hurdles, need for faster approvals (Pesticide Management Bill).

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Regulatory Framework

* CIB&RC: Registration process (efficacy, toxicity, safety data) under Insecticides Act, 1968. * GEAC: Oversight for GM biopesticides. * Evolution: Shift towards promoting biopesticides, streamlining guidelines.

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Government Initiatives

* NMNF & PKVY: Direct promotion through chemical-free/organic farming. * ICAR/KVKs: R&D, demonstration, farmer training. * Policy Support: Subsidies, market linkages.

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Measures for Enhanced Adoption

* R&D: Improved formulations (shelf-life, stability), novel delivery systems (drones, precision agriculture). * Extension: Intensive farmer training, field demonstrations, digital platforms. * Policy: Streamlined regulation, targeted subsidies, market incentives, robust quality control. * IPM Integration: Position biopesticides as central to integrated pest management strategies .

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Conclusion — Biopesticides are indispensable for a resilient, environmentally sound, and economically viable Indian agriculture. A multi-pronged strategy involving R&D, policy, and farmer engagement is key.

Vyyuha Quick Recall

Vyyuha Quick Recall: BIOPEST

Biodegradable & Beneficial (to environment) IPM (Integrated Pest Management) component Organic Farming friendly Precise (Target specific) Environmentally Safe Shorter Shelf-life (a challenge) Types (Microbial, Botanical, Biochemical)