Agriculture Development OFFICER - Agricultural OFFICER NOTES 2026-27 notes (English medium) — complete unit-wise study material mapped to previous-year questions. Read the first 10 pages of every unit free, then get the printable PDF or a printed hard copy delivered across India.
Show topics of all 21 units
ADO A01 Agronomy
Chapters in this Unit · Chapter 1: Crop Classification, Growth, Development and Yield Physiology · Chapter 2: Tillage, Seedbed Preparation, Sowing and Crop Establishment · Chapter 3: Crop Rotations, Cropping Systems and Crop Mixtures · Chapter 4: Integrated Farming Systems, Conservation Agriculture, Precision Management and Climate-resilient Agronomy · Chapter 5: Rice · Chapter 6: Wheat, Maize, Barley, Oat and Rye · Chapter 7: Sorghum, Pearl Millet, Finger Millet and Small Millets · Chapter 8: Pulses · Chapter 9: Oilseeds · Chapter 10: Weed Biology, Characteristics, Classification, Reproduction, Dispersal, Dormancy and Seed Banks · Chapter 11: Preventive, Cultural, Mechanical, Physical, Biological and Chemical Weed Management; Integrated Weed Management · Chapter 12: Water Resources and Soil-Water-Plant Relations: Soil Water, Evapotranspiration, Irrigation Requirement, Scheduling and Critical · Chapter 13: Irrigation Methods, Efficiencies, Water Quality and Drainage · Chapter 14: Dryland Agriculture: Moisture Conservation, Drought Management and Protective Measures · Chapter 15: Sustainable Agriculture, Organic and Natural Farming and Ecological Approaches · Chapter 16: Crop-Weather Relationships, Drought, Weather Hazards and Contingency Planning · Chapter 17: PYQ-Based Fact Bank — 100 Facts
ADO A02 Horticulture
Chapters in this Unit · Chapter 1: Horticulture — Branches, Classification, Nutrition and Production Patterns · Chapter 2: Nursery Planning, Planting Material and Sexual Propagation · Chapter 3: Vegetative Propagation, Tissue Culture, Structures and Rootstock-Scion Relations · Chapter 4: Orchard Layout, High-Density Systems, Training and Pruning · Chapter 5: Mango, Citrus, Banana, Guava and Papaya · Chapter 6: Vegetable Science — Classification, Gardens, Nursery, Solanaceous Crops and Okra · Chapter 7: Bulb, Cole, Root, Legume, Cucurbit, Leafy, Perennial and Tuber Vegetables · Chapter 8: Protected Horticulture and Physiological Disorders · Chapter 9: Postharvest Handling, Ripening, Storage and Regional Varieties · Chapter 10: Black Pepper, Cardamom, Ginger, Turmeric and Tree Spices · Chapter 11: Coconut, Arecanut, Cashew and Cocoa · Chapter 12: Medicinal and Aromatic Plants, Opium Poppy and Sarpagandha · Chapter 13: Flower Crops — Loose Flowers, Cut Flowers, Pot Plants, Bulbous Ornamentals and Postharvest Handling · Chapter 14: PYQ-Based Fact Bank — 100 Facts
ADO A03 Plant Physiology and Biochemistry
Chapters in this Unit · Chapter 1: Cell Organisation, Plant Water Relations and Transpiration · Chapter 2: Mineral Nutrition, Ion Uptake and Translocation · Chapter 3: Photosynthesis: Pigments, Light Reactions, Carbon Fixation and Environmental Control · Chapter 4: Plant Respiration · Chapter 5: Carbohydrate and Lipid Chemistry and Metabolism · Chapter 6: Proteins, Nitrogen Assimilation and Nucleic Acids · Chapter 7: Enzymes and Secondary Metabolites · Chapter 8: Growth, Growth Analysis, Source-Sink Relations and Yield Formation · Chapter 9: Plant Growth Regulators: Physiology and Commercial Use · Chapter 10: Flowering, Reproduction, Seed Biology, Senescence and Ripening · Chapter 11: Abiotic Stress Physiology: Drought, Temperature, Salinity, Flooding and Oxidative Stress · Chapter 12: Physiological Disorders, Stress Indicators and Interpretation of Physiological Experiments · Chapter 13: PYQ-Based Fact Bank — 100 Facts
ADO A04 Genetics Plant Breeding and Seed Science
Chapters in this Unit · Chapter 1: Cell Division, Chromosomes and Gametogenesis · Chapter 2: Mendelian Genetics, Gene Interaction, Sex Linkage and Linkage Mapping · Chapter 3: Chromosomal Aberrations, Ploidy and Haploids · Chapter 4: Molecular Basis of Inheritance, Mutations and Mutation Breeding · Chapter 5: Quantitative Genetics and Population Genetics · Chapter 6: Crop Origin, Evolution and Plant Genetic Resources · Chapter 7: Reproductive Systems, Male Sterility, Self-Incompatibility and Breeding Objectives · Chapter 8: Breeding Methods for Self-Pollinated, Cross-Pollinated and Clonal Crops · Chapter 9: Wide Hybridisation, Ideotypes, Quality, Biofortification and Climate-Resilient Breeding · Chapter 10: Breeding for Disease, Pest and Abiotic Stress Resistance · Chapter 11: Seed, Grain and Seed Quality: Structure, Development and Determinants · Chapter 12: Classes of Seed, the Seed Chain and Multiplication Ratios · Chapter 13: Viability, Vigour, Seed Health and Genetic Purity Testing · Chapter 14: Seed Certification, Standards, Tags and Labels · Chapter 15: Seed Law, Input Regulation and Policy · Chapter 16: PYQ-Based Fact Bank — 100 Facts
ADO A05 Soil Science and Agricultural Chemistry
Chapters in this Unit · Chapter 1: Pedology, Rocks, Weathering, Soil Formation, Profile and Soil Survey · Chapter 2: Soil Classification, Major Soils of India and Regional Soils · Chapter 3: Soil Texture, Structure, Density, Water, Air and Temperature · Chapter 4: Soil Colloids, Clay Minerals, Ion Exchange and Soil Reaction · Chapter 5: Problem Soils: Saline, Sodic, Acid, Acid Sulphate, Calcareous, Waterlogged and Degraded Soils · Chapter 6: Soil Organic Matter, Soil Organisms, Rhizosphere and Nutrient Cycles · Chapter 7: Nitrogen, Phosphorus, Potassium and Sulphur Transformations and Biological Nitrogen Fixation · Chapter 8: Plant Nutrition: Essentiality, Functions, Uptake, Deficiency and Toxicity · Chapter 9: Soil Fertility, Productivity, Sampling and Soil Testing · Chapter 10: Fertilisers: Types, Properties, Application and Use in India · Chapter 11: Organic Manures, Composting, Integrated Nutrient Management, Biofertilisers and Nano-fertilisers · Chapter 12: PYQ-Based Fact Bank — 100 Facts
ADO A06 Plant Pathology and Agricultural Microbiology
Chapters in this Unit · Chapter 1: Plant Diseases: Importance, History, Symptoms, Classification and Causes · Chapter 2: Fungi and Fungus-like Organisms as Plant Pathogens · Chapter 3: Bacteria, Mollicutes, Viruses, Viroids and Other Plant Pathogens · Chapter 4: Disease Cycle, Epidemiology, Host Defence, Assessment and Diagnosis · Chapter 5: Principles of Disease Management: Exclusion, Avoidance, Eradication, Protection, Resistance, Seed and Soil Health, and Quarantine · Chapter 6: Fungicides, Antibiotics, Botanicals, Biocontrol, Integrated Disease Management and Calculations · Chapter 7: Diseases of Cereals, Sorghum and Millets · Chapter 8: Diseases of Pulses, Oilseeds, Cotton and Sugarcane · Chapter 9: Diseases of Potato, Tuber Crops and Vegetables · Chapter 10: Diseases of Fruit, Plantation, Spice, Medicinal and Ornamental Crops · Chapter 11: Microbial Interactions and the Role of Microbes in Agriculture, Food, Industry and Environment · Chapter 12: Biofertilisers, Biocontrol Agents, Regulation (FCO) and Sustainable Agriculture · Chapter 13: PYQ-Based Fact Bank — 100 Facts
ADO A07 Agricultural Entomology and Nematology
Chapters in this Unit · Chapter 1: Arthropods, Insects and the Major Insect Orders · Chapter 2: External Morphology of Insects · Chapter 3: Insect Growth, Metamorphosis, Diapause, Reproduction and Environmental Regulation · Chapter 4: Pest Ecology, Crop Loss, Thresholds, Surveillance and Forecasting · Chapter 5: Host Plant Resistance and the Methods of Pest Management · Chapter 6: Biological, Microbial, Behavioural and Insect-Growth-Regulator Based Pest Control · Chapter 7: Insecticides, Application, Pesticide Arithmetic, Safety and Legislation · Chapter 8: Pests of Cereals, Millets, Pulses and Oilseeds · Chapter 9: Pests of Cotton, Sugarcane, Vegetables, Tuber and Root Crops · Chapter 10: Pests of Fruit, Plantation and Spice Crops, Flowers, Stored Products, Polyphagous Pests and Non-Insect Pests · Chapter 11: Field Diagnosis, Crop-Specific IPM Modules and Recommendations · Chapter 12: Plant-Parasitic Nematodes and Nematode Diseases · Chapter 13: PYQ-Based Fact Bank — 100 Facts
ADO A08 Agricultural Extension Education and Rural Development
Chapters in this Unit · Chapter 1: Agribusiness, Entrepreneurship and Value Chains · Chapter 2: Extension Education, Psychology, Rural Sociology, Leadership and Communication · Chapter 3: Diffusion, Programme Planning, Evaluation and the Extension System in India · Chapter 4: Veterinary and Animal Husbandry Extension — Concepts, Principles and History · Chapter 5: Communication and Extension Teaching Methods · Chapter 6: Adoption and Diffusion of Innovations, PRA and Programme Planning · Chapter 7: Extension Institutions, ICT, Farmer Organisations, Dairy Cooperatives and Women in Livestock · Chapter 8: Technology, Research, Extension and Institutional Reforms · Chapter 9: Rural Development Programmes in India · Chapter 10: Self-Help Groups, Joint Liability Groups and Community Federations · Chapter 11: Extension Systems in India: From Sriniketan to Digital Advisory · Chapter 12: PYQ-Based Fact Bank — 100 Facts
ADO A09 Agricultural Economics and Farm Management
Chapters in this Unit · Chapter 1: Economics and Agricultural Economics: Scope, Concepts and Economic Systems · Chapter 2: Consumer Behaviour, Demand, Supply and Agricultural Prices · Chapter 3: Production Economics and Costs: Resource Use and Returns · Chapter 4: Farm Management, Records, Budgets and Farm Planning · Chapter 5: Land Economics, Rural Labour and the Agrarian Economy · Chapter 6: Agricultural Finance, Credit Institutions and Insurance · Chapter 7: Agricultural Marketing: Functions, Channels, Margins and Institutions · Chapter 8: Price Policy, Trade, Agribusiness and Agricultural Policy · Chapter 9: Economics of Natural Resources — Exhaustible and Renewable · Chapter 10: Environmental Economics — Externalities, Public Goods, Commons and Policy Instruments · Chapter 11: Entrepreneurship, Agri-Startups and the Support Ecosystem · Chapter 12: Women in Agriculture, Gender Roles and Appropriate Technology · Chapter 13: Numerical Problems with Worked Solutions · Chapter 14: PYQ-Based Fact Bank — 100 Facts
ADO A10 Agricultural Engineering
Chapters in this Unit · Chapter 1: Farm Power, Workshop Practice and Internal Combustion Engines · Chapter 2: Tractors and Power Tillers · Chapter 3: Tillage Implements, Bullock-Drawn Tools and Hill Farming Equipment · Chapter 4: Sowing, Interculture, Plant Protection and Harvesting Machinery · Chapter 5: Machinery Performance, Cost Analysis and Farm Mechanisation Programmes · Chapter 6: Surveying, Water Measurement, Pumps and Micro-Irrigation Engineering · Chapter 7: Rural Structures, Renewable Energy, Biogas and Gasifiers · Chapter 8: Sprinkler, Rain Gun, Centre Pivot and Other Pressurised Application Systems · Chapter 9: Drip, Subsurface and Micro-Sprinkler Systems · Chapter 10: Post-Harvest Losses, Moisture and Drying · Chapter 11: Primary Processing, Storage, Cold Chain and Packaging of Produce · Chapter 12: PYQ-Based Fact Bank — 100 Facts
ADO A11 Agricultural Statistics Mathematics and Research Methodology
Chapters in this Unit · Chapter 1: Data, Descriptive Statistics and Averages · Chapter 2: Probability, Binomial, Poisson and Normal Distributions · Chapter 3: Sampling Theory, Sampling Designs and Sampling Errors · Chapter 4: Estimation, Confidence Intervals and Tests of Significance · Chapter 5: Correlation, Regression and Prediction · Chapter 6: Experimental Principles and Basic Designs: CRD, RBD and Latin Square · Chapter 7: Factorial Experiments, Split-Plot Design, ANOVA and Critical Difference · Chapter 8: Field Plot Technique, Survey Design and Yield Estimation · Chapter 9: Research Methodology, Research Design and Sampling · Chapter 10: Index Numbers · Chapter 11: Time Series, Growth Rates, Instability and Decomposition of Output Growth · Chapter 12: Solved Numericals and Data Practice · Chapter 13: PYQ-Based Fact Bank — 100 Facts
ADO A12 Forestry Agroforestry and Natural Resource Management
Chapters in this Unit · Chapter 1: Forestry Fundamentals · Chapter 2: Silviculture · Chapter 3: Agroforestry Systems · Chapter 4: Forest Conservation and Management · Chapter 5: Forestry and Agroforestry · Chapter 6: Medicinal and Aromatic Plants, Forest Products, Latex, Gum, Resin, Tannin and Dye Plants · Chapter 7: Biodiversity, Genetic Resources and Environmental Governance · Chapter 8: Watershed Management, Runoff, Water Harvesting and Degraded Land Reclamation · Chapter 9: PYQ-Based Fact Bank — 100 Facts
ADO A13 Animal Husbandry Dairying and Allied Agriculture
Chapters in this Unit · Chapter 1: Livestock Sector, Census, Terminology and Farm Records · Chapter 2: Cattle and Buffalo Breeds · Chapter 3: Sheep, Goat, Pig, Camel and Equine Breeds · Chapter 4: Breeding Systems, Reproduction and Artificial Insemination · Chapter 5: Housing, Calf and Herd Management, and Climate Stress · Chapter 6: Animal Nutrition, Feeds and Ration Formulation · Chapter 7: Fodder Production, Grazing and Conservation · Chapter 8: Milk Secretion, Clean Milk Production and Quality · Chapter 9: Dairy Cooperatives and Milk Products · Chapter 10: Livestock Diseases, Zoonoses and Preventive Health · Chapter 11: Poultry Production · Chapter 12: Fisheries and Aquaculture · Chapter 13: Institutions, Credit, Insurance and Numericals · Chapter 14: Mushroom Production · Chapter 15: Apiculture, Sericulture, Lac Culture and Commercial Project Planning · Chapter 16: PYQ-Based Fact Bank — 100 Facts
ADO A14 Agricultural Heritage and History of Indian Agriculture
Chapters in this Unit · Chapter 1: Agriculture, Its Evolution in India and Its Place in the Economy · Chapter 2: Land Use, Cropped Area, Holdings and Crop Statistics · Chapter 3: Economic Botany — Scope, Origin and Domestication of Crops · Chapter 4: Origin of Agriculture and Ancient Indian Agricultural Literature · Chapter 5: Traditional Agricultural Knowledge · Chapter 6: Agricultural Development in Modern India: Pre-Independence · Chapter 7: Agricultural Development after Independence · Chapter 8: Agricultural Research, Education and Reforms · Chapter 9: Timeline of Indian Agriculture · Chapter 10: Phases of Indian Agricultural Growth and Planning Strategy · Chapter 11: The Green Revolution: Economics, Distribution and Regional Disparities · Chapter 12: Land Reforms in India: Intermediaries, Tenancy, Ceilings and Consolidation · Chapter 13: PYQ-Based Fact Bank — 100 Facts
ADO A15 Agricultural Policies Institutions and Government Schemes
Chapters in this Unit · Chapter 1: Agricultural Institutions of India · Chapter 2: Flagship Schemes and Missions: Status to November 2026 · Chapter 3: Architecture of Agricultural Policy and Public Spending in India · Chapter 4: Income Support, Credit and Insurance Schemes · Chapter 5: Production, Input, Irrigation and Sustainability Schemes · Chapter 6: Agricultural Research, Pricing, Credit and Marketing Institutions · Chapter 7: Adopter Categories · Chapter 8: Rural Development, Government Schemes, Inclusive Extension and ICT · Chapter 9: Agricultural Policy: NAP 2000, Swaminathan Commission, National Policy for Farmers 2007 and the Doubling of Farmers’ Income · Chapter 10: Agricultural Subsidies, Public Investment and the Subsidy-Investment Debate · Chapter 11: Landmark Commissions, Committees and Policy Documents in Indian Agriculture · Chapter 12: PYQ-Based Fact Bank — 100 Facts
ADO A16 Environmental Science and Climate Change
Chapters in this Unit · Chapter 1: Fundamentals of Environmental Science and Ecology · Chapter 2: Energy Flow, Food Chains, Productivity and Ecological Pyramids · Chapter 3: Ecological Succession and Climax · Chapter 4: Biogeochemical Cycles · Chapter 5: Ecosystem Services, Biodiversity and Conservation of Natural Resources · Chapter 6: Climate Change, Greenhouse Effect, Ozone Depletion and Acid Rain · Chapter 7: Conservation Agriculture, Integrated Farming Systems and Sustainable Resource Management · Chapter 8: Disaster Management, Risk Assessment and Environmental Governance · Chapter 9: Climate Change Economics and the Global Climate Regime · Chapter 10: Climate-Resilient Agriculture — Adaptation, Mitigation and Policy · Chapter 11: Social Dimensions, Environmental Education, Gender, ICT, Remote Sensing, GIS and AI in Resource Management · Chapter 12: PYQ-Based Fact Bank — 100 Facts
ADO A17 Food Science Food Processing and Post Harvest Management
Chapters in this Unit · Chapter 1: Principles of Food Preservation · Chapter 2: Overview of Unit Operations in Food Processing · Chapter 3: Thermal Processing Operations — Blanching, Pasteurisation, Canning, Retorts and Aseptic Processing · Chapter 4: Low-Temperature Preservation — Chilling, Freezing, Thawing and Cold Storage · Chapter 5: Drying and Dehydration · Chapter 6: Fundamentals of Food Packaging — Functions, Levels and Package–Product Interactions · Chapter 7: Glass and Metal Packaging · Chapter 8: Food Adulteration — Concepts, Legal Definitions and Classification · Chapter 9: Common Adulterants and Their Detection · Chapter 10: HACCP - Principles, Steps, CCPs, Critical Limits · Chapter 11: The Food Safety and Standards Act, 2006: Architecture and Core Concepts · Chapter 12: Food Supply Chain Structure and Agri-Logistics · Chapter 13: Cold Chain and Warehousing · Chapter 14: PYQ-Based Fact Bank — 100 Facts
ADO A18 Agricultural Biotechnology and Bioinformatics
Chapters in this Unit · Chapter 1: Plant Tissue Culture — Principles, Media and Micropropagation · Chapter 2: Haploids, Somatic Embryogenesis, Embryo Rescue, Synthetic Seeds and Cryopreservation · Chapter 3: Gene Transfer Methods, Vectors and Markers · Chapter 4: Transgenic Plants and Their Applications · Chapter 5: RNA Interference and Genome Editing (ZFN, TALEN, CRISPR/Cas) · Chapter 6: Molecular Markers · Chapter 7: Gene Mapping, Gene Tagging, QTL Analysis and Marker-Assisted Breeding · Chapter 8: Genomics — Sequencing, Genome Projects and Comparative Genomics · Chapter 9: Bioinformatics — Databases, Sequence Analysis, Phylogeny and Diversity Analysis · Chapter 10: Biosafety, Bioethics, Intellectual Property Rights and Regulation · Chapter 11: PYQ-Based Fact Bank — 100 Facts
ADO A19 Agricultural Information and Communication Technology
Chapters in this Unit · Chapter 1: Computer Fundamentals: History, Organisation, Hardware, Software and Operating Systems · Chapter 2: Networks, Internet, Protocols, Email and IT Gadgets · Chapter 3: MS Word and MS Excel in Practice (with Worked Spreadsheet Formulas and Keyboard Shortcuts) · Chapter 4: Social Media, E-Governance, Digital Payments and Cybersecurity · Chapter 5: AI, Machine Learning, Big Data, IoT and India’s IT Achievements; Practical Computer Scenarios · Chapter 6: Computers, Office Tools, Internet and Data Protection · Chapter 7: E-Agriculture, Remote Sensing, GIS and Satellite Positioning · Chapter 8: Precision Agriculture, AI, IoT, Drones, Digital Platforms and Nanotechnology · Chapter 9: Market Information, e-NAM and Digital Agricultural Marketing · Chapter 10: Drones, Remote Sensing, Machine Vision and Mapping · Chapter 11: PYQ-Based Fact Bank — 100 Facts
ADO A20 Regional State Agriculture Arunachal NE
Chapters in this Unit · Chapter 1: Arunachal Pradesh: Geography, Climate, Soils and Agro-Biodiversity · Chapter 2: Arunachal Agriculture: Crops, Horticulture, Plantations and Pests · Chapter 3: Institutions, Schemes and Marketing in Arunachal Pradesh · Chapter 4: Hill Agriculture: Terraces, Apatani System, Jhum and Mountain Horticulture · Chapter 5: Other Indian Regional Systems and Region-Specific Climate Resilience · Chapter 6: Federal Framework and Agro-Climatic Basis of State Agriculture · Chapter 7: Land Structure, Holdings, Tenancy and Land Reform by State · Chapter 8: Irrigation, Groundwater, Inputs and Cropping Patterns Across States · Chapter 9: State Profiles III: South India and the North-East · Chapter 10: PYQ-Based Fact Bank — 100 Facts
MCQs GIVEN AS PDF ONLY
Unit 1: Agronomy (50 MCQs) · Unit 2: Horticulture (50 MCQs) · Unit 3: Plant Physiology and Biochemistry (50 MCQs) · Unit 4: Genetics, Plant Breeding and Seed Science (50 MCQs) · Unit 5: Soil Science and Agricultural Chemistry (50 MCQs) · Unit 6: Plant Pathology and Agricultural Microbiology (50 MCQs) · Unit 7: Agricultural Entomology and Nematology (50 MCQs) · Unit 8: Agricultural Extension Education and Rural Development (50 MCQs) · Unit 9: Agricultural Economics and Farm Management (50 MCQs) · Unit 10: Agricultural Engineering (50 MCQs) · Unit 11: Agricultural Statistics, Mathematics and Research Methodology (50 MCQs) · Unit 12: Forestry, Agroforestry and Natural Resource Management (50 MCQs) · Unit 13: Animal Husbandry, Dairying and Allied Agriculture (50 MCQs) · Unit 14: Agricultural Heritage and History of Indian Agriculture (50 MCQs) · Unit 15: Agricultural Policies, Institutions and Government Schemes (50 MCQs) · Unit 16: Environmental Science and Climate Change (50 MCQs) · Unit 17: Food Science, Food Processing and Post-Harvest Management (50 MCQs) · Unit 18: Agricultural Biotechnology and Bioinformatics (50 MCQs) · Unit 19: Agricultural Information and Communication Technology (50 MCQs) · Unit 20: Regional and State-Specific Agriculture (Arunachal Pradesh and North-East) (50 MCQs)
