OPSC Assistant Horticulture Officer Syllabus & Exam Pattern 2026

The Odisha Public Service Commission (OPSC) has released the recruitment notification for 22 Assistant Horticulture Officer (AHO) vacancies. These Class II, Group B positions fall under the Department of Agriculture and Farmer’s Empowerment. To excel in the selection process, candidates must master the official OPSC Assistant Horticulture Officer syllabus and understand the latest exam structure.

OPSC Assistant Horticulture Officer Exam Pattern 2026

The OPSC Assistant Horticulture Officer selection process is divided into two distinct phases, outlined below.

• Phase I: Examination consisting of one paper of 200 marks
• Phase II: Interview

The 2026 OPSC AHO Exam Pattern consists of a competitive written examination followed by a personal interview. The written test features 200 objective-type MCQs worth 200 marks, with a time limit of 3 hours. Notably, there is no negative marking according to the official guidelines. Candidates who qualify for the written round will proceed to the interview phase, which carries 25 marks.

OPSC AHO Exam Pattern
Subject	Marks	Duration
Plant propagation and nursery management	20	3 Hours
Fruit crops	20
Plantation crops	20
Vegetable Crops	20
Spices, Condiments, Medicinal plants	20
Ornamental Horticulture	20
Related subjects	30
Agro-Meteorology	05
Soil and Nutrition	05
Water Management	05
Weed Management	05
Dry-land Farming	05
Integrated Farming System	05
Seed Technology	05
Economics	05
Statistics	05
Plant Protection	05
Total	200 Marks

OPSC AHO Interview Syllabus

The final merit list is determined by the candidate's cumulative performance in both the written examination and the interview. Following the written assessment, shortlisted candidates are invited to the 25-mark interview round, where final selection is based on category-wise vacancies.

OPSC Assistant Horticulture Officer Syllabus 2026

Once you have a clear grasp of the OPSC AHO Exam Pattern, dive into the detailed 2026 syllabus. This curriculum encompasses all core subjects and specific topics required for the exam. Review the subject-wise breakdown below to create a strategic and comprehensive study plan.

OPSC Assistant Horticulture Officer Syllabus
Subjects	Topics
Plant propagation and nursery management	Importance of plant propagation Sexual & asexual method of plant propagation, advantages, disadvantages Detail about grafting, layering, budding, cutting, tissue culture, propagation through specialized plant part Incompatibility Polyembryony Apomixes Parthenocarpy Rootstocks Anatomical studies on rooting, scion, graft union Use of PGR, Propagation method of horticultural crop Plant propagating structure Media preparation Nursery act, registration Insect pest & disease control of nursery plants Hi-tech nurseries.
Fruit Crops	Importance of fruits classification of fruits, area, production, export, marketing, storage, fruit growing zones of fruit crops Agro-climatic zones & suitable fruits for tropical, Subtropical & wasteland areas, soil, climate, varieties planting Cultural practices, irrigation, nutrition, weed management plant protection, harvesting, yield, storage, processing Physiological disorders, insect, pest, diseases management Post-harvest technology, training, pruning Unfruitfulness of fruits of important fruit crops such as mango, Banana, citrus fruits, Pineapple, Guava, Citrus, Papaya, Sapota, Bael, Ber, Jackfruit, Pomegranate, Litchi, Jamun, Custard apple, etc.
Plantation Crops	Importance, scope, area, production, marketing, processing & cultivation practices of important plantation crops like coconut, areca nut, Oil palm, Palmyrah palm, Cocoa, coffee, tea, rubber, and date palm about soil, climate, varieties, plant protection, soil & water management, processing packaging, grading, value addition.
Vegetable Crops	Area, production, importance, productivity, export, value addition Off-season cultivation, greenhouse cultivation Organic fanning, seed production, certification, value addition Storage of vegetables & cultivation of important Tropical, subtropical, temperate, under-exploited, perennial vegetable crops about soil, climate, varieties, hybrid, seed rate, spacing, fertilizer dose Physiological disorders, plant protection Harvesting storage, processing, important varieties, vegetable garden, etc.
Spices, Condiments & Medicinal Plants	History scope, area, production, marketing, export, value addition, processing, storage of important spices, condiments & medicinal plants Cultivation practices of important spices, condiments, and medicinal plants concerning soil, climate, variety, spacing, fertilizers, plant protection, harvesting & marketing, processing, etc. Uses of important spices, condiments & medicinal plants.
Ornamental Horticulture	History, definition, scope, importance, marketing, export, aesthetic value Horticulture industry, industrial importance Open cultivation, protected cultivation Packaging, marketing, and storage of important commercial flowers, Ornamental trees, climbers, shrubs, herbs, loose flowers, foliage plants, house plants, orchids, cut flowers, different types of gardens, parks, gardens features, Bonsai, terrace gardens, flower arrangement, bio aesthetic planting Landscape architecture Commercial cultivation of important cut flower crops, lawn & maintenance Protected cultivation of important flowers & foliage plants.
Related Subjects	Precision farming, protected cultivation, drip and sprinkler irrigation, Fertigation, Post-harvesting technology of horticultural crops, nutrient management INM, important insect, pest, and diseases of horticultural crops Water management, soil management Use of PGR, organic fanning, and certification, leaf analysis Genetic Engineering, bio-control, different cropping patterns, crop rotation, farming system research, weed management, water management, soil management, seed production, organic fanning, protected cultivation, respiration, transpiration, photosynthesis, biotic & abiotic stress management, dormancy, growth and development, horticulture entrepreneurship.
Agro Meteorology	Agro climate zones of India & Odisha Agro-ecology for horticultural crops Weather & Climate, Weather parameters, and crop environment, Weather forecasting Climate change, vulnerability and risks, Climate resilience, and climate-smart practices.
Soil & Nutrition	Soil of Odisha, problematic soils, and their management Essential plant nutrients, crop growth, manures and fertilizers Integrated nutrient management for horticultural crop, nutrient use efficiency.
Water Management	Water resources of Odisha, Irrigation development Soil plant water relation Water requirement and irrigation efficiencies, Irrigation scheduling, methods & irrigation, micro irrigation & water use efficiencies, Irrigation water quality, stress management.
Weed Management	Weeds competition & allelopathy Crop weed association Weed prevention eradication and control Integrated weed management, herbicides and their uses selectivity and environmental impacts.
Dry Land Farming	Rained and dry land horticulture, drought management Contingent planning, soil moisture conservation, water harvesting & recycling Watershed management, conservation farming/ horticulture.
Integrated Farming System	Farming system and horticulture, Integrated farming system models (horticultural-based) Farm machinery & equipment for horticulture Tillage & tillage implements.
Seed Technology	Seed quality Seed dormancy Seed production certification storage etc.
Economics	Cost of cultivation of horticultural crops Entrepreneurship in horticulture Agribusiness management Marketing.
Statistics	Basic statistical principles Data collection compilation & presentation.
Plant Protection	IPM Biological control Important insect pests, diseases, and nematodes of horticultural crops.

OPSC Assistant Horticulture Officer Preparation Tips 2026

Successful candidates prioritize completing the official syllabus before branching into supplementary materials. Key focus areas include core horticulture modules, scientific terminology, previous years' question papers, and consistent mock test practice. Additionally, stay updated on advancements in protected cultivation and relevant government agriculture schemes.

Best Books for OPSC Assistant Horticulture Officer 2026