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General Studies 2025 GS Paper III 15 marks 250 words Compulsory Explain

GS Paper III — Q15

How does nanotechnology offer significant advancements in the field of agriculture ? How can this technology help to uplift the…

How does nanotechnology offer significant advancements in the field of agriculture ? How can this technology help to uplift the socio-economic status of farmers ? (Answer in 250 words) 15 marks

हिंदी में प्रश्न पढ़ें

नैनो-प्रौद्योगिकी कृषि के क्षेत्र में महत्वपूर्ण उन्नति कैसे प्रदान करती है ? यह प्रौद्योगिकी कैसे किसानों की सामाजिक-आर्थिक स्थिति के उत्थान में सहायक हो सकती है ? (उत्तर 250 शब्दों में दीजिए)

Q15 of the 2025 UPSC Mains General Studies GS Paper III, as printed
The question as printed in the 2025 General Studies paper
Evaluate your answer to this question → See all 2025 General Studies questions

Model answer

Written by UPSC Answer Check against this question's marking rubric, to the 250-word length. UPSC does not publish answers for Mains — this is one way to score well, not an official key.

Nanotechnology operates at the nanoscale (1–100 nm), offering transformative, high-efficiency interventions that overcome the resource-exhaustion and low input-efficiency of conventional agriculture.

Technological Advancements in Agriculture

Nano-fertilizers—such as indigenous nano-urea and nano-DAP—and nano-pesticides possess a high surface-area-to-volume ratio, enabling targeted cellular uptake by crops. This precision nutrient delivery prevents nutrient run-off, drastically reducing the chemical load on soil and groundwater ecosystems.

Nano-sensors facilitate real-time monitoring of soil health, tracking moisture levels and detecting early pathogen infestations before physical symptoms manifest, which prevents catastrophic crop failure.

Nano-encapsulation technologies enable the controlled, stimuli-responsive release of agrochemicals, protecting active ingredients from premature degradation, improving seed vigor, and accelerating germination rates.

Socio-Economic Upliftment of Farmers

By significantly cutting down input volumes and logistics costs while boosting crop yields, nanotechnology lowers per-hectare expenditure, strengthening the income security of small and marginal farmers.

Furthermore, drought-resilient nano-coatings on seeds and hydrogel-based nano-formulations enhance moisture retention, driving water conservation and mitigating climate-induced production risks.

Challenges and the Way Forward

However, commercial adoption faces barriers, including high initial input costs, substantial awareness deficits among smallholders, and regulatory gaps regarding nanoscale cytotoxicity, bioaccumulation, and soil microbiota safety.

To bridge these gaps, institutional support through Krishi Vigyan Kendras must drive field demonstrations, while robust safety evaluations under the Department of Biotechnology’s Guidelines for Evaluation of Nanopharmaceuticals and Nano-agri-inputs will ensure that nanotechnology equitably and safely transforms rural farm livelihoods.

What "Explain" is asking you to do

Make the working of something clear — what sets it off, what follows from what, and what it produces. Explain is the Commission's mechanism word: it dominates the technical papers and the “explain why” stems, where the marks sit in the causal chain and not in the label.

Structure that answers it

State what it is → the initiating condition → the chain of cause, step by step → an instance where it plays out → what the chain produces

Where marks are lost

Describing what something looks like instead of why it works that way. Naming the stages without linking them reads as description too.

All UPSC directive words, compared →

How this answer will be evaluated

Approach

Framework: Situation > Analysis > Measures > Assessment. explain: definition/context > points in order > small example > short close Full marks: Specific nanotech applications linked to clear socio-economic benefits with implementable measures.

Key points expected

  • Define nanotechnology in agricultural context
  • Explain nano-fertilizers/pesticides for efficiency
  • Link tech to income/food security
  • Mention specific application (e.g., nano-coating)

Evaluation rubric

Each sub-part is marked on its own, against the marks and word limit printed on the paper.

  1. The answer Explain nanotech advancements in agriculture and their role in socio-economic upliftment.  · 250 words

    explain— definition/context → points in order → small example → short close

    Must cover

    • Define nanotechnology in agricultural context
    • Explain nano-fertilizers/pesticides for efficiency
    • Link tech to income/food security
    • Mention specific application (e.g., nano-coating)

    Loses marks

    • Vague generalities without specific tech
    • Ignoring socio-economic impact
    • Aspirational solutions without implementation

    Earns more

    • Nano-sensors for soil monitoring
    • Reduced chemical usage
    • Post-harvest loss reduction
    • Precision farming benefits

    Extra mark

    • Specific scheme (e.g., NABARD support)
    • Simple flowchart of nano-application

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