Agriculture 2022 Paper I 50 marks Elaborate

Q3

(a) How soil acidity affects crop production ? Elaborate the remedial procedures of soil acidity. (20 marks) (b) Classify various natural resources. Discuss the steps for long term conservation of natural resources. (20 marks) (c) Describe the importance of millets in Indian Agriculture. (10 marks)

हिंदी में प्रश्न पढ़ें

(a) मृदा अम्लता फसल उत्पादन को कैसे प्रभावित करती है ? मृदा अम्लता के सुधार हेतु विभिन्न विधियों को विस्तार पूर्वक लिखिये । (20 अंक) (b) विभिन्न प्राकृतिक संसाधनों का वर्गीकरण करें । प्राकृतिक संसाधनों के दीर्घकालिक संरक्षण हेतु विभिन्न चरणों की विवेचना करें । (20 अंक) (c) भारतीय कृषि में मोटे अनाजों के महत्व का वर्णन कीजिए । (10 अंक)

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Directive word: Elaborate

This question asks you to elaborate. The directive word signals the depth of analysis expected, the structure of your answer, and the weight of evidence you must bring.

See our UPSC directive words guide for a full breakdown of how to respond to each command word.

How this answer will be evaluated

Approach

The directive 'elaborate' in part (a) demands detailed, systematic expansion with cause-effect linkages; parts (b) and (c) use 'discuss' and 'describe' respectively, requiring balanced coverage with examples. Allocate approximately 40% time/words to part (a) given its 20 marks and elaboration demand, 35% to part (b) for classification and conservation steps, and 25% to part (c) for millets importance. Structure with a brief integrated introduction, three distinct well-developed sections for each sub-part, and a concluding synthesis on sustainable agriculture.

Key points expected

  • Part (a): Soil acidity mechanisms (H+ ion toxicity, Al/Mn toxicity, P/Ca/Mg deficiency), pH thresholds for major crops, and liming as primary remedy with dose calculations
  • Part (a): Integrated acid soil management including organic amendments, acid-tolerant varieties, and biochar application
  • Part (b): Classification of natural resources by origin (abiotic/biotic), renewability, and ownership; distinction between stock and fund resources
  • Part (b): Long-term conservation strategies including watershed management, sustainable yield principles, and community-based resource governance
  • Part (c): Nutritional superiority of millets (low GI, high mineral content), climate resilience in rainfed areas, and significance for food security and tribal livelihoods
  • Part (c): Government initiatives (IYoM 2023, MSP inclusion, FPO promotion) and export potential of Shree Anna
  • Cross-cutting: Integration of soil health with resource conservation and millet cultivation in dryland agro-ecosystems

Evaluation rubric

DimensionWeightMax marksExcellentAveragePoor
Concept correctness22%11Precisely defines soil acidity (pH<6.5), explains cation exchange capacity reduction and aluminum toxicity mechanisms; correctly classifies resources by renewability and exhaustibility; accurately describes millet types (major vs minor) and their C4 photosynthetic advantageBasic understanding of acidity as pH imbalance, generic resource listing without clear classification criteria, general millet benefits without species-specific detailsConfuses acidity with alkalinity, misclassifies resources (e.g., calling groundwater renewable without qualification), factual errors on millet cultivation regions
Quantitative reasoning16%8Provides liming dose calculations (LR = CEC × (target pH - current pH) × factor), cites critical pH values for specific crops (tea 4.5-5.5, wheat 6.0-7.5), quantifies millet water use efficiency vs rice/wheatMentions pH ranges without crop specificity, gives approximate lime requirements without formula, states millets need less water without comparative figuresNo numerical data, incorrect pH scale interpretation, vague 'less input' claims without substantiation
Indian context examples22%11Cites laterite soils of Kerala/Karnataka, acid soils of NE India and Nilgiris for part (a); references Chipko, Bishnoi traditions, and MGNREGA watershed works for part (b); names specific millet cultivation belts (Bajra-Rajasthan, Ragi-Karnataka, Jowar-Maharashtra) and IYoM 2023General Indian examples without regional specificity, mentions some traditional conservation practices, lists common millets without geographic anchoringNo Indian examples, uses foreign case studies exclusively, irrelevant or incorrect regional associations
Diagram / process18%9Draws soil pH-availability diagram showing nutrient lock-up in acid soils; illustrates integrated watershed management framework; sketches millet value chain from cultivation to market; includes lime requirement determination flowchartBasic pH scale diagram, simple resource cycle sketch, generic millet production flowchart without integrationNo diagrams despite visual potential, poorly labeled sketches, diagrams unrelated to question content
Policy / extension angle22%11Links soil acidity to Soil Health Card Scheme and DST's National Mission on Himalayan Studies; connects resource conservation to NAPCC, National Water Mission, and Biodiversity Act; elaborates millet promotion through NFSM, PDS inclusion, and export policy reformsMentions some schemes superficially, generic policy references without implementation details, partial coverage of government initiativesNo policy references, outdated schemes, confuses ministries or misattributes programs

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