OPSC Assistant Horticulture Officer (AHO) Syllabus 2026 - Complete Paper 1 and Paper 2 syllabus with exam pattern for the recruitment of 22 Assistant Horticulture Officer (Group-B, Class-II) posts under the Odisha Horticulture Service, Department of Agriculture and Farmers Empowerment, Government of Odisha (Advertisement No. 06 of 2026-27, Exam Date: Tentatively 27.09.2026).
The selection consists of a Written Examination of 200 Marks (2 Papers of 100 marks each, MCQ/OMR based) followed by a Personality Test (Interview) of 25 Marks. Both Papers are of Horticulture subjects. There is a penalty of 25% marks for each wrong response; unattempted questions get zero marks. Total marks = 225.
Notification: OPSC Advertisement No. 06 of 2026-27 | Application: 28.07.2026 to 28.08.2026 (5:00 PM) | Official Website:
opsc.gov.in
OPSC AHO Exam Pattern 2026
| Component | Paper | Marks | Questions | Duration | Type |
|---|
| Written Exam | Paper 1 (Horticulture Subjects) | 100 | 100 MCQs | 2 Hours | Objective, OMR |
| Written Exam | Paper 2 (Horticulture Subjects) | 100 | 100 MCQs | 2 Hours | Objective, OMR |
| Personality Test | Interview | 25 | - | - | Face-to-face |
| Total | 225 | | | |
Negative Marking: 25% of marks assigned to a correct answer is deducted for each wrong response (-0.25 marks per wrong answer). Unattempted questions carry zero marks (no penalty).
Question Standard: Bachelor Degree level in Horticulture/Agriculture.
Exam Centres: Cuttack (Kataka) and Bhubaneswar, depending on number of candidates.
Qualifying Marks: The Commission will fix qualifying marks for each paper and each category separately. Shortlisting for Interview in the ratio of about 1:2 of advertised vacancies, subject to a minimum of 5.
OPSC AHO Syllabus 2026 - Paper 1 (Complete Topics)
Paper 1 covers core agronomic and environmental sciences that directly support horticulture practice. All 11 units below are separate examination domains.
A. Agro-Meteorology
- Agro-climatic zones of India and Odisha
- Agro-ecology for horticultural crops
- Weather and climate fundamentals
- Crop-weather relationships and phenology
- Weather forecasting methods and applications
- Climate change: vulnerability, risks, and adaptation
- Climate resilience and climate-smart horticultural practices
B. Soil and Nutrition
- Soils of Odisha - types, distribution, and characteristics
- Problematic soils (acid, alkaline, saline, waterlogged) and their reclamation and management
- Essential plant nutrients - macro and micronutrients and their role in crop growth
- Manures (FYM, green manure, compost) and chemical fertilizers
- Integrated Nutrient Management (INM) for horticultural crops
- Nutrient use efficiency - improving uptake and reducing losses
C. Water Management
- Water resources of Odisha - rivers, groundwater, reservoirs
- Irrigation development and infrastructure in Odisha
- Soil-plant-water relations and field capacity concepts
- Water requirement and irrigation efficiency of horticultural crops
- Irrigation scheduling methods and criteria
- Methods of irrigation - surface, sub-surface, overhead
- Micro-irrigation: Drip and Sprinkler irrigation systems and their design
- Fertigation - combining fertilizer application with drip irrigation
- Water use efficiency (WUE) and water productivity
- Irrigation water quality standards and salinity management
- Stress management - drought, waterlogging, and salinity stress
- Drainage systems and principles in horticulture
D. Weed Management
- Classification of weeds - morphological, botanical, and ecological
- Crop-weed association and critical periods of weed competition
- Allelopathy and its significance in horticulture
- Weed prevention, eradication, and control methods
- Integrated Weed Management (IWM) approaches
- Herbicides - classification, selectivity, mode of action, and environmental impact
- Safe and effective herbicide use in orchards and vegetable systems
E. Dry Land Farming
- Rainfed and dry land horticulture - concepts and challenges
- Drought management strategies in horticulture
- Contingent planning for mid-season drought situations
- Soil moisture conservation techniques - mulching, tied ridges, contour bunding
- Water harvesting and recycling systems
- Watershed management principles and practices
- Conservation agriculture and conservation horticulture concepts
F. Integrated Farming System
- Farming system approach and its relevance to horticulture
- Integrated Farming System (IFS) models based on horticulture - combining crops, livestock, fisheries, and agro-forestry
- Benefits of IFS - income diversification, resource use efficiency, sustainability
G. Seed Technology
- Seed quality parameters - genetic, physical, physiological, and sanitary purity
- Seed dormancy - types, causes, and methods to overcome
- Seed production in horticultural crops - isolation distance, rouging
- Seed certification - process, agencies, and classes of seed
- Seed storage - principles, storage structures, moisture management
H. Plant Protection
- Important insect pests of horticultural crops - identification and damage symptoms
- Diseases of horticultural crops - causal organisms, symptoms, spread, and management
- Nematode pests and their management in horticulture
- Biological control - predators, parasitoids, pathogens, and their application
- Integrated Pest Management (IPM) in horticulture - principles and components
- Pesticide classification, safe use, residue management, and regulatory compliance
I. Agricultural Economics
- Cost of cultivation of major horticultural crops - concept of cost A1, A2, B1, B2, C1, C2
- Entrepreneurship in horticulture - agri-preneurship models and support
- Agri-business management - concepts and practices
- Marketing of horticultural produce - marketing channels, price spread
- Supply chain and value chain concepts in horticulture
- Farmer Producer Organizations (FPOs) - formation, functions, and importance
- Cluster-Based Business Organizations (CBBOs) - role in FPO ecosystem
J. Agricultural Statistics
- Basic statistical principles - mean, median, mode, standard deviation, variance
- Data collection methods - surveys, sampling, experimental data
- Data compilation and tabulation techniques
- Analysis and interpretation of horticultural data
- Data presentation - graphs, charts, tables, and frequency distributions
K. Related Subjects
- Tillage and tillage implements - primary and secondary tillage for horticulture
- Farm machinery and equipment for horticulture - planters, sprayers, harvesting tools
- Crop growth and development - stages, growth analysis, yield components
- Plant Growth Regulators (PGRs) - auxins, gibberellins, cytokinins, ethylene, and their use in horticulture (fruit set, size, ripening)
- Cropping patterns and crop rotation in horticultural systems
- Crop diversification - concept and strategies
- Organic farming and certification - standards, bodies, and processes
- Protected cultivation - greenhouse, polyhouse, shadenet, and low tunnel structures
- Wasteland management for horticulture development
- Biotic and abiotic stress management in horticultural crops
- Government schemes on horticulture - National Horticulture Mission, PM-KISAN, MIDH, NMOOP
- Apiculture - bee keeping, colony management, honey extraction
- Mushroom cultivation - substrate preparation, spawn management, commercial production
- Composting and Vermicomposting - methods and application in horticulture
- Digital initiatives of Odisha State Government in agriculture and horticulture
OPSC AHO Syllabus 2026 - Paper 2 (Complete Topics)
Paper 2 is the core horticulture science paper - testing knowledge of specific crops across fruits, vegetables, plantation crops, spices, medicinal plants, and ornamentals, including post-harvest management and variety identification.
A. Plant Propagation and Nursery Management
- Importance of plant propagation in commercial horticulture
- Sexual propagation - seed propagation, advantages, and limitations
- Asexual propagation methods: cutting, budding, grafting, layering, tissue culture, and propagation through specialized plant parts (bulbs, corms, tubers, rhizomes)
- Propagation structures - mist chamber, intermittent mist, poly tunnel
- Media preparation for nursery - growing media components and formulations
- Nursery Act, registration and accreditation procedures in Odisha
- Hi-tech nursery management - automation, precision systems
- Insect, pest, and disease management of nursery plants
B. Fruit Crops
For each crop topics include: soil and climate requirements, commercial varieties, planting systems and density, nutrient-water-weed management, inter-cultural operations, physiological disorders, plant protection, harvesting standards, post-harvest management, and yield potential.
| Category | Crops Covered |
|---|
| Commercial Fruit Crops | Mango, Banana, Citrus, Pineapple, Guava, Papaya, Sapota, Ber, Pomegranate, Litchi, Custard Apple |
| Niche Crops | Aonla (Amla), Jamun, Ber, Jackfruit |
| Exotic / Emerging Crops | Passion Fruit, Avocado, Dragon Fruit, Strawberry |
High-priority topics: mango malformation and spongy tissue disorder, banana Sigatoka disease and post-harvest Chilling Injury, citrus greening disease (HLB), pineapple crookneck disorder, and the growing importance of dragon fruit and strawberry cultivation in Odisha.
C. Plantation Crops
- Scope, importance, and area/production statistics of plantation crops
- Crops: Coconut, Areca Nut, Cashew Nut, Oil Palm, Palmyra Palm, Date Palm, Cocoa, Coffee, and Tea
- Soil and climate requirements for each crop
- Commercial varieties, seed rate, spacing, and planting/transplanting methods
- Nutrient, water, and weed management in plantation systems
- Plant protection - pests and diseases of plantation crops
- Post-harvest management: grading, processing, packaging, and value addition
- Marketing of plantation crop produce - domestic and export channels
D. Vegetable Crops
Vegetables form the largest and most diverse section of Paper 2. Study all crop groups with full cultivation details, varieties, physiology, and pest management for each.
| Vegetable Group | Crops |
|---|
| Solanaceous Vegetables | Potato, Tomato, Brinjal, Chilli, Capsicum |
| Major Cucurbits | Pumpkin, Cucumber, Watermelon, Bitter Gourd, Bottle Gourd, Ridge Gourd |
| Pod Vegetables | Pea, French Bean, Cowpea, Cluster Bean, Dolichos Bean |
| Okra | Okra (Ladys Finger) |
| Cole Crops | Cabbage, Cauliflower, Knol Khol |
| Bulb Crops | Onion, Garlic |
| Root Crops | Radish, Carrot, Beetroot, Turnip |
| Leafy Vegetables | Amaranthus, Basella, Spinach |
| Tree Vegetables | Drumstick (Moringa), Curry Leaves |
| Tropical Tuber Crops | Sweet Potato, Cassava, Yam, Elephant Foot Yam (Suran), Taro (Colocasia) |
E. Spices, Condiments, Medicinal and Aromatic Plants
- History, scope, and importance of spices and medicinal plants in India and Odisha
- Crops covered: Betel Vine, Black Pepper, Cardamom, Ginger, Turmeric, Curry Leaf, Coriander, Fenugreek, Fennel, Cumin
- Medicinal and aromatic plants: Periwinkle, Rauwolfia, Ocimum (Tulsi), Kewda, Aloe Vera, Lemon Grass
- Cultivation practices: soil and climate, commercial varieties, spacing, seed rate, sowing/planting time
- Management: nutrient, water, and weed management for each crop
- Plant protection and physiological disorders
- Harvesting, yield potential, and post-harvest management
- Economic importance: essential oil extraction, pharmaceutical use, export potential
F. Ornamental Horticulture
- History of gardens - formal, informal, Japanese, Italian, and Mughal garden styles
- Types and styles of parks, botanical gardens, and public open spaces
- Principles of landscaping - unity, balance, proportion, rhythm, accent, sequence
- Garden features - lawns, water bodies, rock gardens, topiary, pergola
- Ornamental trees, shrubs, herbs, climbers, and house plants - identification and use
- Flower arrangements - ikebana, western arrangement, and commercial floristry
- Bonsai - techniques, training, and species selection
- Urban horticulture and bio-aesthetic planning
- Commercial flower crops (field production): Rose, Marigold, Chrysanthemum, Gladiolus, Jasmine, Crossandra, Dahlia, Tuberose - cultivation, plant protection, post-harvest handling
- Protected cultivation of flowers: Rose, Orchid, Carnation, Anthurium, Gerbera - greenhouse management, substrate, fertigation
- Lawn establishment, turfgrass selection, and lawn maintenance
- Cultivation of important cut foliages for commercial use
Preparation Tips for OPSC AHO 2026
- With 25% negative marking, attempt only questions you are confident about; aim for accuracy over quantity.
- Focus on specific variety names, disease identification, physiological disorders, and post-harvest technology - these carry high marks and are often neglected.
- Fertigation, Allelopathy, IPM, INM, Tissue Culture, Modified Atmosphere Storage (MAS), FPO and MIDH are high-frequency terms across both papers.
- Revise the B.Sc. Horticulture/Agriculture curriculum topic-by-topic using the official syllabus appended to the OPSC advertisement.
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