UPSC Agriculture 2025

The directive 'differentiate' demands clear distinctions between paired concepts in parts (b) and (c), while 'discuss' in (a), 'elucidate' in (d), and 'explain/calculate' in (e) require analytical depth. Allocate ~30 words each to (a), (b), (c), (d) and ~30 words to (e) including calculation. Structure: define→classify/differentiate→principles/examples→calculation with critical interpretation for (e).

• (a) Classification: renewable vs non-renewable, biotic vs abiotic; NRM principles: watershed approach, sustainable use, community participation; ecological conservation link through carrying capacity and ecosystem services
• (b) Cropping system (interactions between crops, soil, environment over time/space) vs cropping pattern (temporal arrangement); principles: compatibility, resource use efficiency, sustainability, profitability, stability
• (c) Agrisilviculture (crops + trees, e.g., wheat + poplar) vs agrisilvipasture (crops + trees + livestock, e.g., sorghum + acacia + sheep); component specificity matters
• (d) Forest policies: 1894 (state control), 1952 (national needs), 1988 (conservation-centric), 2018 (community participation); aims: ecological security, livelihood, industrial raw material, climate mitigation
• (e) WCE formula: (Weed in unweeded - Weed in treatment)/Weed in unweeded × 100; calculations for T₂-T₅; critical comment on herbicide efficacy vs cost, environmental trade-offs, resistance risk

The directive 'enumerate' in part (a) demands systematic listing with explanation; parts (b) and (c) require descriptive elaboration. Allocate approximately 40% of time/words to part (a) given its dual demand (impacts + public opinion), 40% to part (b) for detailed agronomic measures, and 20% to part (c) for concise soil classification. Structure as: integrated introduction → part-wise sequential treatment with clear sub-headings → brief conclusion linking climate resilience to soil health.

• Part (a): Biophysical impacts (yield reduction, pest-disease shifts, water stress, extreme events); economic impacts (price volatility, farm income loss); public opinion dimensions (risk perception, adaptation willingness, knowledge gaps from surveys like CEEW/PIK)
• Part (a): Regional differentiation in Indian farmer perception—climate skepticism vs. lived experience of erratic monsoon, heat stress in Indo-Gangetic and Deccan regions
• Part (b): Rainfed-specific agronomic interventions: moisture conservation (bunding, contour cultivation), drought-tolerant varieties (ICRISAT millets, Sahbhagi dhan), cropping system adjustments (intercropping, contingency plans), residue management for soil moisture
• Part (b): Integrative practices—agroforestry, farm ponds, precision water application; institutional support through PMKSY, MGNREGA for water harvesting structures
• Part (c): Major soil orders of India: Allisols (Indo-Gangetic), Vertisols (Deccan black cotton), Aridisols (Thar), Inceptisols (Brahmaputra valley), Ultisols/Alfisols (Eastern/Western Ghats); their agricultural significance and constraints
• Part (c): Soil-climate nexus: carbon sequestration potential, degradation status (NBSS&LUP data), and climate vulnerability by soil type

The directive 'discuss' demands a comprehensive, analytical treatment with logical organization. Allocate approximately 40% of effort to part (a) as it carries 20 marks, 40% to part (b) with its five sub-heads, and 20% to part (c). Structure with a brief introduction on cropping systems diversity, then address each part sequentially with clear sub-headings, concluding with integrated remarks on sustainable dryland agriculture.

• Part (a): Cereal-based systems (rice-wheat, rice-rice, maize-wheat) and millet-based systems (pearl millet-mustard, sorghum-based) classified by soil type (alluvial, black, red, lateritic) and irrigation status (irrigated, rainfed, limited irrigation)
• Part (b)(i): Cotton climate requirements (warmth, 600-1200mm rainfall, frost-free period) and soil preferences (deep black cotton soils/vertisols, pH 6.5-8.0)
• Part (b)(ii): Sowing methods (dibbling, drilling, broadcasting) with seed rates (10-15 kg/ha for hybrids, 15-20 kg/ha for varieties) and spacing norms
• Part (b)(iii): Nutrient management including NPK doses (80-120:40-60:40-60 kg/ha), FYM application (10-15 t/ha), and micronutrient deficiencies (Zn, B)
• Part (b)(iv): Inter-culture operations including thinning, gap filling, hoeing, and weed management (pre-emergence fluchloralin, hand weeding)
• Part (b)(v): Plant protection covering major pests (bollworms, sucking pests) and diseases (wilt, leaf curl virus) with IPM components
• Part (c): In situ moisture conservation practices including contour bunding, graded bunding, bench terracing, tied ridging, mulching, and conservation tillage
• Integration: Linkage between moisture conservation and rainfed cotton success, citing schemes like PMKSY and watershed development programs

The directive 'explain' demands conceptual clarity with cause-effect linkages across all three parts. Allocate approximately 40% of word budget to part (a) given its 20 marks, covering six forest functions with Indian examples; 35% to part (b) on weed seed bank dynamics and reduction strategies; and 25% to part (c) on INM rationale and rice-specific recommendations. Structure as: brief introduction on sustainable resource management → systematic treatment of (a), (b), (c) with sub-headings → integrated conclusion linking forest conservation, weed management and nutrient stewardship for sustainable agriculture.

• Part (a): Six forest functions with Indian specificity—productive (NTFPs like bamboo, tendu leaves; timber from Western Ghats), protective (Shivalik catchment protection, mangrove cyclone buffers), ameliorative (carbon sequestration in Himalayan forests, microclimate regulation), recreational (Jim Corbett, Ranthambore ecotourism), educational (FRI Dehradun, Silent Valley research), developmental (tribal livelihoods, Joint Forest Management)
• Part (b): Weed seed bank definition (viable seeds in soil profile), vertical distribution (plough layer concentration), longevity mechanisms (hard seed coat, dormancy); reduction strategies—cultural (crop rotation, stale seedbed), mechanical (tillage timing, burial depth), chemical (pre-emergence herbicides), biological (biofumigation, competitive suppression), and integrated approach
• Part (c): INM need—declining factor productivity, imbalanced NPK use, micronutrient deficiencies (Zn, Fe in rice), soil health degradation, cost-benefit optimization, environmental protection; INM for transplanted rice—green manuring (dhaincha/sunhemp), FYM/compost, biofertilizers (Azolla, BGA, PSB), fertilizer scheduling (basal DAP, split N application, leaf colour chart based N management), residue recycling
• Integration point: Link forest litter contribution to soil organic matter (part a) with INM in rice (part c), and forest-based weed seed dispersal with agricultural weed management (part b)
• Policy connect: National Forest Policy 1988, National Agroforestry Policy 2014, Integrated Pest Management under NAPCC, Soil Health Card Scheme relevance

This multi-part question requires explaining technical concepts across five distinct areas. Allocate approximately 30 words per sub-part (150 words total), spending roughly 2 minutes per part. Begin each sub-part with a direct definition, follow with mechanistic/process explanation, and conclude with specific Indian examples or stakeholder implications. For (a) and (b), prioritize accuracy of technical mechanisms; for (c), emphasize the paradox with real commodity examples; for (d) and (e), focus on multi-stakeholder utility and policy relevance.

• (a) Wind erosion: saltation (0.1-0.5mm particles, 30-50% transport), surface creep (0.5-2mm, 5-25%), suspension (<0.1mm, long-distance); mention Thar Desert/ Rajasthan context
• (b) Cereals: drought-sensitive at booting/anthesis (wheat, rice); pulses: flowering/pod-filling (gram, arhar); high temperature stress at meiosis/pollen development
• (c) Pre-harvest scarcity (price spike) vs post-harvest glut (price crash): examples like onion 2019, tomato 2023, potato; reasons: perishability, lack of storage, speculative hoarding, MSP procurement delays
• (d) Market intelligence: real-time price, demand-supply, trade data; AGMARKNET, eNAM, ITC e-Choupal; utility for price stabilization, export-import policy, farmer selling decisions
• (e) Farmer FIRST (Farmers, Innovations, Research, Science and Technology): ICAR 2016 paradigm shift; objectives: farmer-centric research, participatory technology development, innovation diffusion, income enhancement

The directive 'enumerate' for part (a) demands systematic listing with elaboration, while 'lucid account' for (b) and 'brief note' for (c) require clarity and conciseness respectively. Allocate approximately 40% of time/words to part (a) given its 20 marks and dual demand (effects + remedies), 35% to part (b) for comprehensive factor analysis, and 25% to part (c) for concise mulch classification. Structure with clear sub-headings for each part, ensuring part (a) balances enumeration with discussion of remedial measures, part (b) integrates all five soil-forming factors with their interactions, and part (c) prioritizes moisture conservation mechanisms over exhaustive mulch types.

• Part (a): Harmful effects of herbicide residues — soil microbial toxicity (nitrification inhibition, reduction in beneficial bacteria/fungi), phytotoxicity to succeeding crops (carryover injury, residue accumulation in food chain), soil physicochemical degradation (organic matter depletion, pH alteration), groundwater contamination and non-target organism toxicity
• Part (a): Remedial measures — microbial degradation (bioaugmentation with Pseudomonas, Bacillus), phytoremediation (hyperaccumulator plants), adsorption techniques (activated carbon, biochar), crop rotation with tolerant species, and integrated weed management (IWM) reducing chemical dependency
• Part (b): Five soil-forming factors — detailed explanation of parent material (igneous/sedimentary/metamorphic influence), climate (temperature and precipitation as pedogenic drivers), topography (drainage, erosion, aspect effects), organisms (vegetation type, soil fauna, microbial activity), and time (degree of profile development)
• Part (b): Factor interactions — exemplified through laterite formation (climate + parent material), podzolization (climate + vegetation + time), or alluvial soil development (topography + parent material + time)
• Part (c): Mulch types — organic mulches (straw, crop residues, green manure, compost) versus inorganic mulches (plastic mulches: black, transparent, biodegradable; pebble/gravel mulches; reflective mulches)
• Part (c): Moisture conservation mechanisms — evaporation suppression (physical barrier), temperature moderation (reducing evaporative demand), infiltration enhancement, weed suppression eliminating competition, and specific examples like plasticulture in water-scarce regions

The directive 'explain' demands conceptual clarity with cause-effect linkages. Allocate approximately 40% of time/words to part (a) given its 20 marks, 40% to part (b), and 20% to part (c). Structure: brief introduction defining conjunctive use → body addressing each sub-part sequentially with integrated examples → conclusion emphasizing integrated water resource management. For (a), cover surface-groundwater synergy and salinity management; for (b), analyze hydrogeological and anthropogenic causes with drainage solutions; for (c), justify necessity before listing constraints.

• Part (a): Definition of conjunctive use as coordinated development of surface and groundwater resources; salinity hazard parameters (EC, SAR, RSC); management practices including blending, cyclic use, leaching requirement, mulching, and salt-tolerant crops
• Part (a): Specific amelioration techniques for saline/sodic water: gypsum application, organic amendments, drip irrigation with saline water, and drainage provision
• Part (b): Natural causes of waterlogging (high water table, impermeable layers, heavy rainfall, river flooding) and anthropogenic causes (seepage from canals, inadequate drainage, over-irrigation)
• Part (b): Management strategies: preventive (lining canals, optimal irrigation scheduling) and curative (surface drainage, subsurface drainage including tile drains and bio-drainage, vertical drainage through tubewells)
• Part (c): Farm planning necessity: resource optimization, risk minimization, sustainable intensification, and alignment with agro-climatic conditions; limitations including small landholdings, fragmented plots, market uncertainties, and resource constraints
• Integration: Linkage between conjunctive use and waterlogging prevention; connection between farm planning and efficient water management at farm level

The directive 'differentiate' in part (a) demands clear distinction between partial and complete farm budgets with systematic steps; for (b) 'discuss' requires comprehensive coverage of training methods; for (c) 'explain' needs detailed exposition of Bennett's hierarchy. Structure: Introduction (2-3 lines) → Part (a): 40% word budget (8-10 marks worth) with tabular comparison and 6-7 steps → Part (b): 35% word budget covering 5-6 training methods with Indian institutional examples → Part (c): 25% word budget detailing all 7 levels of Bennett's hierarchy with diagram → Conclusion linking farm budgeting to extension evaluation (2-3 lines).

• Part (a): Clear differentiation between partial budget (single enterprise change, fixed costs excluded) vs complete budget (whole farm reorganization, all costs included) with proper tabular presentation
• Part (a): Systematic steps in farm planning and budgeting: inventory assessment, goal setting, resource appraisal, enterprise selection, budgeting, implementation, monitoring and control
• Part (b): On-the-job training methods: job rotation, understudy assignments, coaching; Off-the-job methods: lectures, case studies, role play, simulation exercises, field visits
• Part (b): Indian institutional context: MANAGE, EEI Hyderabad, SAMETI, KVKs, ATMA training modules; distinction between pre-service and in-service training
• Part (c): All seven levels of Bennett's hierarchy: inputs, activities, participation, reactions, KASA change (Knowledge, Attitudes, Skills, Aspirations), practice change, end results
• Part (c): Hierarchical relationship showing how lower levels are necessary but not sufficient for higher-level outcomes; practical application in extension programme evaluation

The directive 'describe' demands detailed, structured exposition of concepts across all five sub-parts. Allocate approximately 30 words (20% time) to each sub-part given equal 10-mark weighting. Structure: concise definition followed by elaboration of types/phases for (a); features then hypothesis comparison for (b); definition-example-applications sequence for (c); definition-methods for (d); and classification-mechanism for (e). No conclusion needed; maximize content density within 150 words per part.

• (a) Cell cycle: Definition as ordered sequence of events; distinction between mitotic and meiotic cell cycles; phases (G1, S, G2, M) with brief function; mention of G0 phase and checkpoints
• (b) Heterosis: Definition as hybrid vigour; key features (increased yield, size, fertility, disease resistance); dominance hypothesis (Bruce-Davenport: masking of deleterious recessives) vs overdominance (East-Shull: superior heterozygote at individual loci)
• (c) MAS: Definition as indirect selection using DNA markers; examples (SSR, SNP markers for disease resistance); applications in recurrent selection (improving population), gene pyramiding (stacking multiple resistance genes), QTL introgression (moving quantitative trait loci)
• (d) Grow-out test: Definition as field examination of varietal purity; roguing methods (off-type removal based on morphological characters at vegetative, flowering, maturity stages; field standards for Foundation/Certified seed)
• (e) Mineral nutrients: Biochemical classification (structure constituents, energy storage, enzyme activators, osmotic regulators); excess mineral effects (salinity stress, ion toxicity, nutrient imbalance, osmotic stress reducing water uptake)

The directive 'explain' demands conceptual clarity with cause-effect linkages. Structure: brief intro on induced mutagenesis relevance → Part (a): 40% weight (8-10 marks equivalent) covering physical/chemical mutagen classification, alkylating agents (EMS, MMS) mechanism of base substitution, and azide (NaN3) inhibition of DNA synthesis → Part (b): 40% weight on haploid definition, anther culture/microspore culture methods, chromosome doubling techniques, and applications in instant homozygosity and mutation studies → Part (c): 20% weight defining IP, then comparing patent (novelty, non-obviousness, utility), PBR (UPOV criteria, farmer's privilege), and copyright for software/training materials → conclude with India's PPV&FR Act 2001 significance. Spend ~35 minutes on (a), ~35 on (b), ~20 on (c).

• Part (a): Classification of mutagenesis into physical (ionizing: X-rays, gamma rays; non-ionizing: UV) and chemical (alkylating agents, base analogues, intercalating agents); mechanism of alkylating agents causing O6-alkylguanine mispairing leading to GC→AT transitions; azide mutagen mechanism involving respiratory inhibition and DNA replication errors
• Part (a): Specific examples like EMS (ethyl methanesulfonate) inducing point mutations in rice; sodium azide in barley and sorghum mutagenesis programs
• Part (b): Definition of doubled haploid (DH) as homozygous lines derived from haploid embryos; production methods including anther/microspore culture, wide hybridization (bulbosum technique in barley), chromosome elimination (maize × haploid inducer stock), and ovary/ovule culture
• Part (b): Applications: instant fixation of recombinants, selection efficiency for recessive traits, reverse breeding, mutation studies, and hybrid seed production (e.g., maize inbred development); Indian examples: DH lines in rice (CRRI, Cuttack), wheat (IIWBR, Karnal)
• Part (c): Intellectual Property definition as intangible creations of mind; Patent protection under Indian Patents Act 1970 (amended 2005) excluding plants/animals but covering biotechnological processes; Plant Breeders' Rights under PPV&FR Act 2001 with DUS testing, farmer's rights, and compulsory licensing; Copyright for agricultural databases and software
• Part (c): Distinction between patent (strict novelty, 20 years) and PBR (novelty, distinctness, uniformity, stability; 15-18 years); India's sui generis system balancing breeder incentives and farmer privileges

The directive 'explain' demands clear reasoning with cause-effect linkages across all three sub-parts. Allocate approximately 40% of time/words to part (a) given its 20 marks, 35% to part (b) for its 20 marks, and 25% to part (c) for its 10 marks. Structure with a brief introduction on propagation importance, then address each sub-part sequentially with balanced depth, concluding with integrated insights on quality planting material and sustainable agriculture.

• Part (a): Reasons for vegetative propagation in fruit plants (heterozygosity, juvenility maintenance, true-to-type progeny); advantages and disadvantages of asexual (uniformity, virus transmission, no genetic variation) versus sexual (hybrid vigour, genetic diversity, juvenile phase) propagation
• Part (b): Definition of genetic purity (trueness to type, absence of off-types, genetic contaminants); maintenance methods outside normal cultivation area including seed villages, isolated seed production centres, off-season nursery raising, tissue culture for virus-free stock, and use of protected structures
• Part (c): Cell wall functions in growth (cell expansion, turgor pressure maintenance), development (morphogenesis, cell differentiation), maintenance (structural support, protection against pathogens), and reproduction (pollen tube growth, fertilization, embryo development)
• Indian examples: ICAR's National Horticulture Mission for vegetative propagation; seed production in Kashmir/HP for off-season potato; NBPGR's germplasm conservation; tissue culture facilities at NRC for Banana, Citrus
• Technical specifics: Apomixis vs amphimixis; somaclonal variation; lignin, cellulose, pectin roles; plasmodesmata in cell-to-cell communication
• Policy linkages: Seeds Act 1966, PPVFR Act 2001, ICAR seed certification standards; relevance for doubling farmers' income and export quality standards

The directive 'explain' demands clear causal reasoning and mechanistic clarity. Allocate approximately 40% of time/words to part (a) given its 20 marks and conceptual depth, 35% to part (b) for its procedural complexity and diagram requirement, and 25% to part (c). Structure: brief introduction linking water transport to seed quality; body with three clearly demarcated sections; conclusion integrating plant physiology with seed industry policy.

• Part (a): Define xylem water transport; explain transpiration pull, cohesion (hydrogen bonding between water molecules), adhesion (water-to-xylem wall), and tension (negative pressure); mention Dixon and Joly's theory with evidence from pressure bomb experiments
• Part (b): Define pedigree selection as progeny testing with ancestral records; explain maintenance of pedigree records (plant-to-row, head-to-row, individual plant selection); schematic showing F1 to F6+ generations with selection stages and record-keeping symbols
• Part (c): Outline Seeds Act 1966 provisions (seed certification, truth-in-labeling, establishment of Central Seed Committee and Certification Agencies); identify essential activities: breeder seed production, foundation and certified seed multiplication, seed testing infrastructure, and farmer-extension linkages
• Integration point: Link water stress tolerance (part a) to seed quality maintenance in breeding programs (part b)
• Policy connection: Connect Seed Act 1966 to subsequent Seed Policy 2002 and private sector participation in hybrid seed development

This multi-part question requires elucidation across five distinct agricultural domains. Allocate approximately 30 words per sub-part (150 words total), spending roughly equal time on each since all carry equal marks. Structure each sub-part as: direct definition/answer → 2-3 explanatory points → brief concluding link. For (a), prioritize nitrate reductase pathway; for (b), emphasize integrated nutrient management; for (c), distinguish vegetative from floral malformation; for (d), link dietary diversity to SDG-2; for (e), cite supply chain inefficiencies.

• (a) Nitrogen absorption: active transport via NO3-/NH4+ transporters; nitrate assimilation via nitrate reductase (NR) and nitrite reductase (NiR) enzymes; GS-GOGAT cycle for amino acid synthesis
• (b) Citrus decline management: integrated nutrient management (micronutrient correction), Phytophthora root rot control, use of Rangpur lime/Cleopatra mandarin rootstocks, drip irrigation adoption
• (c) Mango malformation: Fusarium mangiferae (floral) and F. subglutinans (vegetative); malformed compact panicles with shortened internodes; malformation management through pruning and fungicide application
• (d) Food-based dietary approaches: dietary diversification, biofortification, food-based dietary guidelines; elimination of hidden hunger through micronutrient-rich food systems
• (e) Food grain processing constraints: post-harvest losses (10-15%), fragmented supply chains, inadequate cold storage, FCI procurement inefficiencies, small-scale milling infrastructure

The directive 'elucidate' demands clear, detailed explanation with supporting evidence. Structure: brief introduction → Part (a) grape cultivation (~40% time/words, 20 marks): soil/climate, varieties (Thompson Seedless, Anab-e-Shahi), training systems (Bower, Kniffin), pruning, thinning, IPM; Part (b) food productivity trends (~35%, 20 marks): data-driven analysis of yield trends, Green Revolution to post-Green Revolution, sustainable strategies (organic farming, precision agriculture, climate-resilient varieties); Part (c) salinity stress (~25%, 10 marks): physiological mechanisms, osmotic/ionic stress, photosynthesis inhibition, avoidance mechanisms (exclusion, compartmentalization, succulence). Conclude with integrated vision linking all three to sustainable agriculture.

• Part (a): Soil requirements (well-drained sandy loam, pH 6.5-7.5); climatic needs (temperate/sub-tropical, 15-25°C, 700-900mm rainfall); improved varieties for different agro-climatic zones (Thompson Seedless, Sonaka, Manik Chaman for North India; Bangalore Blue, Anab-e-Shahi for South India)
• Part (a): Training systems (Bower system for vigorous vines, Kniffin system, Telephone system); pruning types (spur pruning, cane pruning) with timing; fruit thinning techniques; major pests (flea beetle, thrips, mealy bug) and diseases (downy mildew, powdery mildew, anthracnose) with IPM
• Part (b): Quantitative trends in food productivity (cereal yields 1960s-2020s, stagnation in rice-wheat systems, regional disparities Punjab vs Eastern states); factors (input fatigue, groundwater depletion, climate change)
• Part (b): Sustainable food production strategies: conservation agriculture, organic farming, agroecology, millets promotion (UN International Year of Millets 2023), biofortification (Iron-rich pearl millet, Zinc wheat), climate-smart agriculture, food-nutrition convergence through POSHAN Abhiyaan
• Part (c): Salinity effects: osmotic stress reducing water uptake, ionic toxicity (Na+, Cl-), nutrient imbalance, photosynthesis reduction via stomatal closure and non-stomatal limitations (PSII damage, reduced RuBisCO activity)
• Part (c): Avoidance mechanisms: salt exclusion at root level (ultrafiltration by membranes), salt excretion through salt glands (mangroves), succulence (dilution effect), osmotic adjustment (compatible solutes: proline, glycine betaine), compartmentalization into vacuoles, antioxidant defense systems

The directive 'discuss' demands a comprehensive, analytical treatment with balanced coverage across all three sub-parts. Allocate approximately 40% of time/words to part (a) given its 20 marks, 35% to part (b) (20 marks with conceptual depth), and 25% to part (c) (10 marks). Structure: brief integrated introduction → systematic treatment of (a), (b), (c) with clear sub-headings → concluding synthesis linking pea production technology to food security challenges.

• Part (a): Pea varieties (Arkel, Bonneville, Lincoln, Pant Uphar, VL-3); cool climate requirement (10-25°C), frost sensitivity; sowing windows (rabi: Oct-Nov North India, Oct-Dec hills); seed rate (75-100 kg/ha for seeds, 25-30 kg/ha for vegetable); IPM for powdery mildew, rust, aphids
• Part (b): Clear distinction between growth (irreversible increase in size/mass) and development (progressive change in form/function); sigmoid growth phases (lag, log/exponential, deceleration, stationary); growth measurement methods (RGR, NAR, LAI, CGR, SLA) with formulae; growth analysis techniques (classical/gravimetric, functional, crop growth modelling)
• Part (c): Production constraints (fragmented landholdings, soil degradation, water scarcity, climate change); distribution constraints (PDS inefficiencies, supply chain losses, price volatility); nutritional constraints (protein-energy malnutrition, micronutrient deficiencies, dietary diversification gaps); institutional/policy gaps (MSP coverage, procurement limitations, NFSA implementation challenges)
• Integration: Link pea as protein-rich pulse to nutritional security; connect growth analysis methods to precision agriculture extension
• Contemporary relevance: Mention PM-KISAN, POSHAN Abhiyaan, National Food Security Act 2013, and climate-resilient varieties in context

The directive 'discuss' for part (a) demands a comprehensive treatment with definition, enumeration, and elaboration of mechanisms. Allocate approximately 40% word/time to part (a) given its 20 marks, 35% to part (b) (20 marks with dual directives 'elaborate' and 'comment'), and 25% to part (c) (10 marks). Structure: brief introduction defining new-generation PGRs, systematic coverage of all three parts with clear sub-headings, and a concluding synthesis on integrated crop-nutrition-health linkages.

• Definition of new-generation PGRs distinguishing them from classical auxins/cytokinins; enlistment of brassinosteroids, jasmonates, salicylic acid, strigolactones, and peptide hormones with their biosynthetic origins
• Mechanisms of abiotic stress mitigation: brassinosteroids in drought/salinity tolerance, jasmonates in herbivory and osmotic stress, salicylic acid in heat/chilling stress, strigolactones in nutrient deficiency stress
• Micronutrient deficiencies in humans: iron-deficiency anemia, zinc deficiency, iodine deficiency disorders, vitamin A deficiency; their prevalence patterns in India (NFHS-5 data)
• Protein-energy malnutrition strategies: ICDS, mid-day meal scheme, POSHAN Abhiyaan, biofortification (Golden Rice, iron-rich pearl millet), supplementary nutrition for women and children
• Mycoplasmal diseases of potato: purple top wilt, aster yellows, witches' broom; vectors (leafhoppers, psyllids); physiological disorders: hollow heart, internal brown spot, blackheart, stem-end browning with causal factors