JAMB Area of Concentration for Agriculture Subject 2027/2028

The JAMB Area of Concentration for Agriculture Subject 2027/2028 covers the main agricultural topics and practical skills you need to study for the examination.

Agriculture is not only about crops and farm animals. You should also understand soil, genetics, crop production, livestock management, agricultural economics, farm tools, machinery, technology and the interpretation of agricultural data.

The subject is divided into five major areas: General Agriculture, Agronomy, Animal Production, Agricultural Economics and Extension, and Agricultural Technology. Some topics mainly require clear understanding, while others involve calculations, identification, comparison, data interpretation and practical application.

As you revise each area, pay attention to what you should know and what you should be able to do. This will help you use the JAMB Agriculture topics as a clear guide for your study and practice.

Read also: Agric JAMB Syllabus 2026/2027 Download PDF

General Agriculture

General Agriculture introduces the meaning, importance and development of agriculture. It also covers agricultural ecology, genetics, farm inputs and the roles of government and other organizations in agricultural development.

Meaning and Scope of Agriculture

Agriculture involves more than growing crops and keeping animals.

In modern terms, agriculture includes production, processing and marketing of agricultural products.

You should understand the different branches of agriculture and be able to distinguish between them.

You should also know the two major types of agriculture:

• subsistence agriculture;
• commercial agriculture.

Subsistence agriculture is mainly carried out to meet the needs of the farmer and the farmer’s family.

Commercial agriculture is mainly carried out to produce agricultural products for sale.

You should be able to distinguish between these types according to their purpose and method of production.

Importance of Agriculture

Agriculture contributes to economic and social development in several ways.

It provides raw materials for agro-allied industries.

You should be able to relate different agro-allied industries to the agricultural raw materials they use.

Agriculture also contributes through:

• employment;
• rural development;
• supply of raw materials;
• economic development.

You should understand how these contributions support development in West Africa.

Agricultural Ecology

Agricultural ecology deals with the relationship between agricultural production and the environment.

You should understand the main ecological zones of West Africa and be able to distinguish between their features.

You should also know the agricultural products associated with the different ecological zones.

Environmental conditions can affect both crops and livestock.

These factors may be divided into:

• biotic factors;
• abiotic factors.

Biotic factors involve living components of the environment, while abiotic factors involve non-living environmental conditions.

You should be able to distinguish between them and understand how they can affect agricultural production.

Genetics

Genetics deals with how characteristics are passed from parents to offspring.

You should study the first and second laws of Mendel and understand how they are applied to simple genetic problems.

Important terms include:

• locus;
• alleles;
• genotype;
• dominance;
• homozygous traits;
• heterozygous traits.

You should understand the meanings of these terms and use them correctly when solving genetic crosses.

Cell Division

You should be able to distinguish between the different types of cell division.

This knowledge is connected with reproduction and inheritance.

You should also be able to determine the possible results of genetic crosses involving homozygous and heterozygous traits.

Simple probability ratios may be required, so practise how to calculate them correctly.

Farm Inputs

Farm inputs are materials and resources used in agricultural production.

Examples include:

• planting materials;
• agrochemicals;
• other materials needed for farming.

You should be able to classify different farm inputs and explain their uses.

History of Agricultural Development in West Africa

Agriculture in West Africa has developed through different systems, programmes and institutions.

You should understand traditional agricultural systems such as:

• shifting cultivation;
• bush fallowing.

You should be able to compare these systems and explain how they operate.

Problems of Agricultural Development

Several problems can limit agricultural development.

Important areas include:

• land tenure systems;
• inadequate infrastructure;
• limited agricultural finance;
• pollution.

You should be able to identify these problems and suggest suitable solutions where required.

Agricultural Research Institutes

Agricultural research institutes help to increase the use of science and research in agricultural development.

Examples include national institutes such as:

• NCRI;
• IAR;
• IAR&T;
• CRIN;
• NIFOR;
• FRIN;
• RRI;
• NRCRI;
• NIHORT;
• LCRI.

International research institutes include:

• IITA;
• ILRI;
• ICRISAT;
• WARDA.

You should understand the roles of agricultural research institutes and how their activities contribute to agricultural development.

Agricultural Development Projects

Agricultural Development Projects are established to support agricultural production and rural development.

Examples include:

• RTEP;
• FADAMA.

You should understand why such projects are established and how they can contribute to agriculture.

National Agricultural Programmes

Different national programmes have been introduced to support agricultural development.

Examples include:

• OFN;
• NAFPP;
• NALDA;
• Green Revolution;
• NCRPs;
• NARP;
• Project Coordinating Unit, or PCU.

You should be able to assess the contributions of these programmes to agricultural development.

Roles of Government in Agricultural Development

Government can influence agricultural development through policies, laws, programmes and infrastructure.

Important areas include:

• agricultural fiscal policies;
• import duties;
• restrictions on importation;
• agricultural laws and reforms;
• subsidies;
• credit facilities.

You should understand how government policies can either support or affect agricultural production.

Agricultural Laws and Reforms

Agricultural laws can influence how land and other agricultural resources are used.

An example is the Land Use Act.

You should understand how agricultural laws and reforms can affect agricultural production and development.

Government Agricultural Incentives

Government may provide incentives to encourage agricultural production.

These include:

• subsidies;
• credit facilities;
• other forms of support.

You should be able to identify these incentives and assess their effects on agricultural development.

Agricultural Infrastructure

Government can also support agriculture by providing infrastructure.

Examples include:

• transport systems;
• communication systems.

You should understand how these facilities support the movement of people, agricultural inputs, information and agricultural products.

Roles of NGOs in Agriculture

Non-governmental organizations can also contribute to agricultural development.

You should understand the different roles NGOs can play in supporting farmers and agricultural activities.

Their contribution should be considered alongside the work of government, research institutes and agricultural development programmes.

Agronomy

Agronomy deals mainly with soil, crop production, plant growth, crop management, pests, diseases and forestry.

This is a large part of Agriculture, so you should understand both the theory and the practical skills involved.

Rocks and Soil Formation

Soil develops from rocks over time.

You should understand the main types of rocks and the factors that affect:

• rock weathering;
• soil formation.

You should also know the main properties of soil.

Soil Profile, Texture and Structure

A soil profile shows the different layers or horizons found in soil.

You should be able to distinguish between the different horizons and understand how they differ.

You should also understand:

• soil texture;
• soil structure;
• soil components.

You may need to calculate the proportion of different soil constituents and analyse soil into its component parts.

Chemical Properties of Soil

Important chemical properties include:

• soil acidity;
• soil alkalinity;
• soil pH;
• chemical components such as silicates.

You should understand how soil pH is determined and why it is useful when studying soil conditions.

Soil Water

Water is important for plant growth.

You should understand its:

• sources;
• movement;
• importance;
• management;
• conservation.

Different forms of soil water include:

• capillary water;
• gravitational water;
• hygroscopic water.

You should be able to compare these forms.

You should also understand:

• water-holding capacity;
• wilting point;
• available water;
• unavailable water.

Soil Conservation

Soil conservation involves protecting soil from damage and loss of fertility.

Important problems include:

• leaching;
• erosion;
• continuous cropping;
• burning;
• oxidation of organic matter.

You should understand the causes and effects of these problems and know suitable prevention and control methods.

Irrigation and Drainage

Irrigation supplies water to crops, while drainage removes excess water.

You should know the different irrigation and drainage systems and understand their importance.

You should also be able to discuss some of the challenges associated with irrigation and drainage.

Soil Fertility

Soil fertility refers to the ability of soil to support healthy plant growth.

Plants require different nutrients.

These can be grouped into:

• macro-nutrients;
• micro-nutrients.

You should understand their roles in plant nutrition and the factors that affect their availability.

Nutrient Cycles

Important cycles include:

• carbon cycle;
• water cycle;
• nitrogen cycle.

You should understand how these cycles relate to plant growth and soil fertility.

Soil Flora and Fauna

Soil contains living organisms.

These organisms form the soil flora and fauna.

You should understand how they contribute to maintaining soil fertility.

Maintaining Soil Fertility

Methods of maintaining soil fertility include:

• use of cover crops;
• application of organic manure;
• use of fertilizers.

You should distinguish between organic and inorganic fertilizers and understand how they are applied.

You should also know how to determine common fertilizer ratios.

Nutrient Deficiency Symptoms

When plants lack important nutrients, they may show visible symptoms.

Examples include:

• chlorosis;
• sickle leaves;
• stunting;
• apical necrosis.

You should be able to identify these symptoms, understand their causes and suggest suitable remedies.

Land Preparation and Soil Tillage

Land preparation makes the soil suitable for crop production.

You should understand different methods of land preparation and tillage.

Important tillage methods include:

• zero tillage;
• minimum tillage;
• other suitable tillage practices.

You should be able to compare these methods and explain their advantages and disadvantages.

The type of crop and condition of the land can affect the method chosen.

Plant Forms and Functions

You should understand the main parts of crop plants and their functions.

You should be able to distinguish between:

• monocot plants;
• dicot plants.

You should also know the structure of common storage organs found in crops.

Plant Growth, Development and Reproduction

Plant reproduction involves several stages.

Important areas include:

• gametogenesis;
• pollination;
• fertilization;
• embryo formation;
• seed formation;
• fruit formation.

You should understand how these stages are connected.

Pollination and Fertilization

You should know the different types of pollination and understand why they occur.

You should also understand the process of fertilization and how it leads to embryo development, seed formation and fruit formation.

Plant Propagation

Plants can be propagated sexually or asexually.

Sexual propagation involves the use of seeds.

You should understand:

• seed viability;
• viability tests;
• seed rate;
• seed germination;
• conditions needed for germination.

You should also distinguish between different types of seed germination.

Vegetative Propagation

Asexual propagation does not depend on seeds.

Methods include:

• cutting;
• budding;
• grafting;
• layering.

You should be able to classify crops according to the vegetative method used to propagate them.

Nursery and Nursery Management

A nursery is used to raise young plants before they are transferred to the field.

You should understand:

• choice of nursery site;
• types of nursery;
• advantages and disadvantages;
• nursery management;
• transplanting techniques.

Cropping Systems

Farmers may grow crops using different systems.

Important systems include:

• monocropping;
• mixed cropping;
• multiple cropping;
• intercropping;
• relay cropping;
• strip cropping;
• rotational cropping.

You should be able to compare these systems and know when each one may be used.

Planting Patterns and Plant Density

Common planting patterns include:

• broadcasting;
• row spacing;
• drilling.

Plant density may involve:

• single stands;
• double stands;
• multiple stands.

You should understand how plant density can affect crop yield.

You should also be able to calculate plant population per hectare where required.

Crop Husbandry

Crop husbandry covers the activities involved in producing and managing crops from planting to storage.

For each important crop, you should understand:

• common name;
• scientific name;
• general appearance;
• storage organs;
• method of propagation;
• husbandry practices;
• harvesting;
• processing;
• storage;
• common diseases;
• common pests;
• economic importance.

Major Crop Groups

The main groups include:

• Cereals: maize, guinea corn and rice.
• Legumes: cowpea, groundnut and soybean.
• Tubers: yam, cassava and sweet potato.
• Vegetables and spices: tomato, eggplant, pepper, onion, okra, cabbage and amaranthus.
• Fruits: citrus, pineapple and pawpaw.
• Beverages: cocoa, kola and coffee.
• Oil crops: oil palm, coconut and shea butter.
• Latex crops: para rubber and gum arabic.
• Fibre crops: jute, cotton and sisal hemp.
• Sugar crops: sugarcane and beet.

You should be able to connect each crop with its method of production, use and economic importance.

Pasture and Forage Crops

Pasture and forage crops are important for feeding livestock.

You should study common pasture grasses and legumes and understand their:

• identification;
• propagation;
• establishment;
• maintenance;
• conservation;
• uses.

You should also distinguish between pasture and forage crops.

Hay and Silage

Pasture can be conserved for future use.

Two important methods are:

• hay making;
• silage making.

You should understand the difference between the two.

Natural Grasslands and Range Management

You should understand the distribution of natural grasslands in West Africa and relate vegetational zones to their dominant pasture species.

You should also study:

• range types;
• use of range resources;
• range management.

Floriculture

Floriculture deals with ornamental plants.

You should be able to identify common:

• ornamental trees;
• shrubs;
• flowers.

You should also understand their establishment, maintenance and uses.

Weeds

Weeds compete with crops for important resources.

You should be able to identify weeds by common and scientific names and understand their:

• morphology;
• reproduction;
• dispersal;
• effects on crops.

Weed control methods include:

• weeding;
• mulching;
• cover cropping;
• tillage;
• herbicides;
• trap cropping.

You should know how these methods are used.

Crop Diseases

Crop diseases may affect plants in the field or during storage.

Important disease-causing organisms include:

• fungi;
• bacteria;
• nematodes;
• viruses.

You should be able to relate the organism to:

• symptoms;
• damage caused;
• method of transmission;
• suitable control method.

You should also understand possible side effects of disease-control methods, including pollution and poisoning.

Crop Pests

Crop pests can attack plants in the field or during storage.

You should be able to identify common pests and explain their economic importance.

Important insect groups include:

• biting insects such as grasshoppers;
• boring insects such as weevils;
• sucking insects such as aphids and cotton stainers.

You should understand their life cycles and how knowledge of those life cycles can help with prevention and control.

Pesticides

Pesticides are used to control agricultural pests.

You should distinguish between common types and understand how they affect pests.

You should also understand that pesticide use can have unwanted side effects.

Forest Management

Forests provide important products such as:

• wood;
• pulp;
• fibre;
• other forest materials.

You should understand the importance of forests and the need to manage them properly.

Forest conservation methods include:

• regulation;
• controlled exploitation;
• regeneration;
• afforestation;
• agroforestry;
• taungya system.

You should be able to compare these methods and understand how they can be applied.

Crop Improvement

Crop improvement aims to develop crops with better qualities.

Methods include:

• introduction;
• selection;
• crossing;
• quarantine.

You should understand why crop improvement is carried out and be able to distinguish between the different methods.

Animal Production

Animal Production deals with farm animals, their feeding, reproduction, management, health and improvement. It also covers fisheries, wildlife and bee-keeping.

You should understand the major farm animals found in West Africa and the practices used to keep them healthy and productive.

Forms and Classification of Farm Animals

You should be able to identify and classify the major farm animals found in West Africa.

Important animals include:

• cattle;
• sheep;
• goats;
• pigs;
• rabbits;
• poultry.

You should know their different species and breeds and where they are commonly found.

You should also be able to identify the main external features of each animal.

Animal Production Terminology

Animal husbandry uses several special terms.

Examples include:

• calving;
• kidding;
• castration;
• capon;
• veal;
• mutton.

You should understand what these terms mean and use them correctly when describing livestock production.

Anatomy and Physiology of Farm Animals

You should understand the main tissues, organs and body systems of farm animals.

Important systems include:

• digestive system;
• reproductive system;
• respiratory system;
• urinary or excretory system;
• nervous system.

You should be able to explain the basic functions of the main tissues and organs.

Ruminants and Non-Ruminants

The digestive systems of farm animals are not all the same.

You should understand the difference between ruminant and non-ruminant animals and compare how their digestive systems work.

This knowledge is useful when studying animal feeding and nutrition.

Effects of the Environment on Farm Animals

Changes in the environment can affect the growth and development of livestock.

You should understand how conditions such as climate change may influence the physiological development of farm animals.

Reproduction in Farm Animals

Reproduction is necessary for the continuation and improvement of livestock.

Important areas include:

• gametogenesis;
• oestrus cycle;
• signs of heat;
• heat period;
• secondary sexual characteristics;
• gestation period;
• parturition;
• reproductive hormones.

You should understand the main stages of reproduction and the roles played by hormones.

Development and Birth of Young Animals

You should understand how young animals develop after fertilization until birth.

This includes:

• development of the young;
• nourishment before birth;
• birth;
• care of the young.

You should also understand the role of the mammary glands and lactation in feeding young mammals.

Egg Formation and Incubation in Poultry

For poultry, you should understand:

• egg formation;
• incubation;
• hatching.

You should be able to follow the main stages from egg formation to the emergence of the young bird.

Animal Nutrition

Farm animals need the correct nutrients for growth, reproduction and production.

You should understand the major feed nutrients and their:

• sources;
• functions.

You should also know the different types of feeds and how they are used.

Balanced Ration

A balanced ration provides the nutrients required by an animal in the correct amounts.

You should understand simple ration formulation and be able to relate different rations to the needs of different classes of livestock.

Important types include:

• maintenance ration;
• production ration.

A maintenance ration supports normal body functions, while a production ration supports activities such as growth, milk production, egg production or reproduction.

Pasture and Forage for Animals

Common pasture and forage crops used in livestock feeding include:

• guinea grass;
• elephant grass;
• giant star grass;
• Andropogon species;
• Calopogonium species.

You should understand how these feeds are used and how pasture can be conserved.

Important conservation methods include:

• hay making;
• silage making.

Nutrient Deficiencies

A shortage of important nutrients can lead to malnutrition.

You should be able to connect deficiency symptoms with their possible causes.

You should also know suitable measures that can be used to correct nutrient deficiencies in farm animals.

Livestock Management

Good livestock management requires proper housing, feeding, sanitation and veterinary care.

You should understand how these practices are applied to:

• ruminants;
• pigs;
• rabbits;
• poultry.

Management should cover the animal from birth until the appropriate stage of production or slaughter.

Livestock Management Systems

The main management systems include:

• intensive system;
• semi-intensive system;
• extensive system.

You should understand how the systems differ and how management practices change under each one.

Animal Health

Farm animals can suffer from different diseases.

You should understand the environmental conditions that can make animals more likely to become sick.

You should also study:

• causative organisms;
• symptoms;
• methods of transmission;
• effects of diseases.

Disease-causing organisms may include:

• viruses;
• bacteria;
• fungi;
• protozoa.

You should be able to relate diseases to their causes, symptoms and methods of transmission.

Prevention and Treatment of Animal Diseases

You should understand both preventive and curative methods of controlling livestock diseases.

The main aim is to protect the animals, reduce losses and maintain good production.

Choose the control method according to the disease and its cause.

Livestock Parasites

Parasites live on or inside animals and may cause illness or reduce productivity.

They can be grouped into:

• endoparasites, which live inside the animal;
• ectoparasites, which live on the outside of the animal.

Some organisms also act as disease vectors.

You should understand the life cycles and economic importance of common livestock parasites.

Parasite Prevention and Control

Methods of controlling parasites include:

• dipping;
• spraying;
• deworming;
• sanitation.

You should be able to choose suitable methods according to the type of parasite involved.

Fisheries

Fisheries deal with the production, harvesting and management of fish.

Common fish species include:

• Tilapia;
• Catfish.

You should understand the different fish culture systems used in West Africa.

Fish Culture Systems

The main systems include:

• extensive systems, such as inland and deep-sea fishing, lakes and rivers;
• semi-intensive systems, such as dams;
• intensive systems, such as fish ponds.

You should be able to distinguish between these systems.

Fish Pond Establishment and Management

For intensive fish farming, you should understand the factors considered when establishing and managing a pond.

Important practices include:

• pond fertilization;
• liming;
• desilting.

Proper pond management helps create suitable conditions for fish production.

Fish Harvesting and Processing

Fish can be harvested using methods such as:

• drag nets;
• hook and line.

You should understand the advantages and disadvantages of different harvesting methods.

Fish processing and preservation methods include:

• curing;
• sun-drying;
• smoking.

You should also understand the importance of fishery regulations.

Wildlife Management

Wildlife management involves protecting and using wild animals and their habitats responsibly.

Important areas include:

• habitat conservation;
• feeding;
• domestication;
• harvesting;
• processing;
• wildlife regulations.

You should be able to identify animals found in West African game reserves and understand why game reserves are established.

Bee-Keeping

Bee-keeping is also called apiculture.

You should understand its meaning and importance to agriculture and economic development.

Important areas include:

• indigenous bees;
• exotic bees;
• traditional bee-keeping;
• modern bee-keeping.

You should also be able to identify bee-keeping equipment and explain its uses.

Safety measures are important when handling bees.

Animal Improvement

Animal improvement aims to develop livestock with better qualities.

Methods include:

• introduction;
• breeding;
• quarantine;
• selection.

You should understand why animal improvement is carried out and be able to distinguish between the different methods.

Breeding Systems

Important breeding systems include:

• inbreeding;
• line breeding;
• cross-breeding;
• artificial insemination.

You should understand how these methods differ and how they can be used in livestock improvement.

Agricultural Economics and Extension

Agricultural Economics and Extension deal with how farm resources are used, how agricultural businesses are managed and how agricultural knowledge is shared with farmers.

You should understand the economic decisions involved in farming and the factors that affect production, labour, marketing and farm management.

Factors of Agricultural Production

The main factors of agricultural production are:

• land;
• labour;
• capital;
• management.

Each one contributes to agricultural production in a different way.

Land

Land is an important agricultural resource.

You should understand the different forms of land ownership found in West Africa and how they can affect agricultural production.

You should also know the major features of land and how those features may influence the way land is used.

Labour

Labour refers to the human effort used in agricultural production.

You should understand the different types and sources of labour and how they affect farming activities.

You should also be able to compare the different forms of labour and identify situations where each one may be suitable.

Capital

Capital includes the resources and money used to support agricultural production.

You should understand the different sources of agricultural capital and the problems that may be connected with obtaining finance.

Access to capital can affect the size and efficiency of a farm enterprise.

Management

Management involves organizing and controlling farm resources.

You should understand the role of a farm manager and how management decisions affect agricultural production.

Basic Economic Principles

Agricultural production is also influenced by basic economic principles.

Important areas include:

• demand;
• supply;
• production function;
• diminishing returns;
• scale of preference;
• choice.

Demand and Supply

Demand and supply help explain how agricultural products move within a market.

You should understand the relationship between demand and supply and be able to interpret their graphical representation.

You should also understand how changes in one may affect the other.

Production Function

A production function shows the relationship between agricultural inputs and the resulting output.

You should understand:

• input-input relationships;
• output-output relationships;
• input-output relationships.

You should also be able to interpret graphs showing these relationships.

Stages of Production and Diminishing Returns

You should understand the different stages of production and the idea of diminishing returns.

This involves studying how output changes as more inputs are added to production.

You should also understand scale of preference and how choices are made when resources are limited.

Characteristics of Agricultural Production

Agricultural production has some special features.

These include:

• small farm holdings;
• biological limits on production;
• dependence on climate;
• seasonality;
• changes in demand and supply.

You should understand how these characteristics affect farmers and agricultural markets.

Elasticity of Demand and Supply

Elasticity measures how strongly demand or supply changes when another factor changes.

You should understand price elasticity of demand and supply for agricultural products.

You should also be able to calculate simple elasticity values where required.

Labour Management

Good labour management helps improve farm efficiency.

You should understand:

• labour relations;
• supervision;
• different types of labour;
• permanent labour;
• other sources of labour.

You should also know ways of improving labour efficiency.

Labour Laws and Regulations

Agricultural employers and workers operate under labour laws and regulations.

You should understand how these laws can affect the management of farm labour and agricultural production.

Farm Management

Farm management involves planning and controlling farming activities.

A good farm manager should have qualities that help with decision making and proper use of resources.

You should understand:

• qualities of a farm manager;
• functions of a farm manager;
• problems faced by farm managers.

Farm Records

Farm records help farmers keep track of activities and financial results.

Important examples include:

• livestock records;
• profit and loss records;
• other farm records.

You should understand the different types of farm records and why they are kept.

Gross and Net Profit

You should be able to determine important financial results in farm management.

These include:

• gross profit;
• net profit.

You should understand what each one shows about the performance of a farm business.

Appreciation, Depreciation and Salvage Value

Agricultural assets may increase or decrease in value over time.

You should understand:

• appreciation;
• depreciation;
• salvage value.

You should also be able to calculate these values where required.

Agricultural Insurance

Agricultural insurance helps farmers manage certain risks and losses.

You should understand:

• meaning of agricultural insurance;
• importance;
• different types;
• suitable insurance schemes;
• problems associated with agricultural insurance.

You should be able to choose an appropriate type of insurance for a given agricultural situation.

Marketing of Agricultural Produce

Agricultural marketing involves moving farm products from producers to consumers.

You should understand why marketing is important in agriculture.

Marketing Channels and Agents

Agricultural products may pass through different channels before reaching consumers.

You should understand:

• marketing channels;
• marketing agents;
• functions of marketing agents.

You should also be able to classify different agents according to their roles.

Problems of Agricultural Marketing

Marketing channels can create challenges for agricultural producers.

You should understand how the structure of marketing can affect farmers and agricultural production.

You should also know the characteristics of agricultural products that can influence their marketing.

Agricultural Extension

Agricultural extension helps farmers gain useful knowledge and improve their farming practices.

You should understand the meaning and importance of agricultural extension.

Organizations involved may include:

• Agricultural Development Programmes;
• universities;
• research institutes;
• farmers’ organizations;
• cooperative societies.

You should understand the roles these organizations play in agricultural extension education.

Agricultural Extension Methods

Agricultural information can be shared with farmers through different methods.

These include:

• demonstration plots;
• visual aids;
• mass media;
• other extension methods.

You should be able to distinguish between the different methods and understand how each one can be used.

Problems of Agricultural Extension

Agricultural extension in West Africa may face different challenges.

You should be able to identify these problems and suggest possible solutions.

A good understanding of agricultural extension will help you see how research findings and improved farming methods can reach farmers and support better agricultural production.

Agricultural Technology

Agricultural Technology covers the tools, machines, power sources and modern methods used to improve agricultural production.

You should understand how farm equipment is used and maintained, how agricultural products are processed and stored, and how technology supports farming.

Farm Surveying and Farmstead Planning

Farm surveying involves measuring and examining farmland so that it can be properly planned and used.

You should understand the meaning and importance of farm surveying.

You should also be able to identify common surveying equipment and explain their uses and care.

Important areas include:

• surveying equipment;
• uses of surveying equipment;
• maintenance and care;
• common survey methods;
• farmstead layout.

You should understand how surveying principles can be applied when planning the arrangement of buildings, roads and other facilities on a farm.

Simple Farm Tools

Simple farm tools are used for different farming activities.

You should be able to identify common farm tools and understand their correct uses.

You should also know how to maintain them properly.

When studying farm tools, pay attention to:

• identification;
• uses;
• maintenance;
• advantages;
• disadvantages.

Proper maintenance can help tools last longer and work more effectively.

Farm Machinery and Implements

Farm machinery makes it possible to perform agricultural tasks more efficiently.

Examples include:

• tractors;
• milking machines;
• other farm machines.

You should also understand different farm implements and how they are classified according to their uses.

You should be able to:

• identify machinery and implements;
• explain their uses;
• operate them where required;
• apply suitable maintenance practices.

Mechanization and Sources of Farm Power

Farm activities can be powered in different ways.

Important sources include:

• animal power;
• machine power.

You should be able to compare different sources of farm power and explain their advantages and disadvantages.

Agricultural Mechanization

Agricultural mechanization involves using machines to carry out farming activities.

You should understand its advantages and disadvantages.

Mechanization may help with faster farm operations and the handling of larger areas, but it can also face challenges.

You should study the problems and prospects of mechanized agriculture in West Africa.

Processing of Agricultural Produce

Agricultural products often need to be processed before they are consumed, stored or sold.

You should understand why agricultural processing is important.

Processing methods may be:

• traditional;
• modern.

Examples include:

• garri processing;
• rice processing;
• groundnut processing.

You should be able to distinguish between different processing methods and understand how they are applied to agricultural produce.

Storage of Agricultural Produce

Storage helps preserve agricultural products after harvesting or processing.

You should understand the different storage methods and be able to compare them.

You should also know how to select and apply a suitable storage method for a particular agricultural product.

Introduction to Biotechnology

Biotechnology involves the use of biological methods and techniques in agriculture.

You should understand basic terms such as:

• tissue culture;
• anther culture;
• in-vitro fertilization;
• genetic engineering.

You should know what these terms mean and understand why biotechnology can be useful in agriculture.

Application of ICT in Agriculture

Information and Communication Technology, or ICT, can support agricultural production in different ways.

You should understand the basic components and features of a computer and how computers can be used in agriculture.

Applications include:

• disease forecasting;
• weather forecasting;
• ration formulation;
• keeping databases;
• simulation studies.

You should also understand how communication tools such as:

• mobile phones;
• internet services;

can help improve access to agricultural information and support production.

Agricultural Research and Statistics

Agricultural research helps farmers and scientists test ideas and improve agricultural practices.

You should understand basic concepts used when planning agricultural experiments.

Important terms include:

• hypothesis;
• treatment;
• control.

You should know the role of each one in an agricultural experiment.

Interpretation of Experimental Results

After an experiment, the results need to be examined carefully.

You should be able to:

• interpret agricultural data;
• draw conclusions from results;
• recognize experimental errors;
• calculate simple measures of central tendency.

This area requires both understanding and calculation. You should practise reading data carefully and using the figures to make reasonable conclusions.

How to Use the JAMB Agriculture Topics for Revision

Agriculture covers many areas, so your revision should combine theory, practical knowledge, calculations, identification and data interpretation.

Do not study the five major sections separately without making connections between them. Many topics are related and become easier when you understand how they work together.

Study the Five Major Areas in a Balanced Way

Your revision should cover:

• General Agriculture;
• Agronomy;
• Animal Production;
• Agricultural Economics and Extension;
• Agricultural Technology.

Agronomy and Animal Production contain many topics, but the other sections should not be ignored.

Connect Soil Topics With Crop Production

When revising Agronomy, connect soil topics with crop growth.

For example, study:

• soil formation;
• soil water;
• soil fertility;
• fertilizers;
• nutrient deficiencies;
• land preparation;
• crop husbandry.

Understanding these topics together will help you see how soil conditions affect crop production.

Practise Agricultural Calculations

Some Agriculture topics require calculations.

Important areas include:

• genetic probability ratios;
• soil constituent proportions;
• fertilizer ratios;
• seed rate;
• plant density per hectare;
• elasticity of demand and supply;
• gross and net profit;
• depreciation;
• salvage value;
• simple measures of central tendency.

Make sure you understand what each figure represents before starting a calculation.

Learn Crop Identification and Husbandry

For important crops, pay attention to:

• common and scientific names;
• crop group;
• propagation method;
• husbandry practices;
• harvesting;
• processing;
• storage;
• pests;
• diseases;
• economic importance.

You should be able to connect a crop with the correct production and management practices.

Review Weeds, Pests and Diseases Together

Weeds, pests and diseases can all reduce crop production.

For each one, learn how to:

• identify it;
• understand the damage caused;
• recognize how it spreads or reproduces;
• choose an appropriate control method;
• identify possible side effects of control methods.

For insect pests, also study their life cycles because this knowledge can help with prevention and control.

Connect Animal Nutrition With Livestock Management

When studying Animal Production, do not treat nutrition as an isolated topic.

Connect:

• feed nutrients;
• types of feeds;
• ration formulation;
• nutrient deficiencies;
• livestock management;
• animal health.

The nutritional needs of an animal affect its growth, reproduction and production.

Practise Farm Animal Identification

You should be able to identify important farm animals and their external features.

Also learn common animal production terms and distinguish between:

• ruminants and non-ruminants;
• intensive, semi-intensive and extensive systems;
• endoparasites and ectoparasites;
• maintenance and production rations.

Study Fisheries, Wildlife and Bee-Keeping Separately

These areas contain different management practices.

For fisheries, focus on fish culture systems, pond management, harvesting, processing and regulations.

For wildlife, study conservation, game reserves and wildlife regulations.

For bee-keeping, understand the types of bees, methods of bee-keeping, equipment and safety measures.

Practise Graph and Data Interpretation

Agricultural Economics and Research require you to interpret information.

You should be comfortable with:

• demand and supply graphs;
• production relationships;
• experimental results;
• simple agricultural data.

Do not only memorize economic terms. Practise reading graphs and drawing conclusions from them.

Understand Farm Management and Record Keeping

Farm management connects agricultural production with business decisions.

Give attention to:

• farm records;
• labour;
• capital;
• management;
• profits;
• depreciation;
• insurance;
• marketing.

You should understand how these areas affect the success of a farm enterprise.

Learn Agricultural Tools and Machinery Practically

For Agricultural Technology, focus on identification and use.

You should know:

• simple farm tools;
• surveying equipment;
• farm machinery;
• farm implements;
• sources of farm power.

For each one, understand its use, maintenance and any major advantages or disadvantages.

Review Modern Agricultural Technology

Do not ignore newer areas such as:

• biotechnology;
• computers in agriculture;
• weather forecasting;
• disease forecasting;
• ration formulation;
• databases;
• mobile phones;
• internet communication;
• agricultural experiments and statistics.

You should understand how these technologies can improve agricultural production and decision making.

Combine Reading With Practical Questions

After studying each topic, practise questions that require you to:

• identify;
• classify;
• compare;
• calculate;
• interpret;
• explain;
• suggest solutions;
• apply agricultural knowledge.

This approach will help you prepare for both the theoretical and practical parts of the JAMB Agriculture topics.

Recommended Texts for JAMB Agriculture

The following books can support your JAMB Agriculture revision:

• Adeniyi M. O. et al. (1999), Countdown to Senior Secondary Certificate Examination Agricultural Science, Evans.
• Akinsanmi A. O. (2000), Junior Secondary Agricultural Science, Longman.
• Akinsanmi O. A. (2000), Senior Secondary Agricultural Science, Longman.
• Anthonio Q. B. O. (1999), General Agriculture for West Africa, George Allen.

Read also: Full List of JAMB Recommended Textbooks for Agricultural Science 2027/2028

These texts can support your understanding of topics such as crop production, animal production, soil science, agricultural economics and agricultural technology.

Key Points to Remember

• Agriculture is divided into General Agriculture, Agronomy, Animal Production, Agricultural Economics and Extension, and Agricultural Technology.
• General Agriculture covers the meaning and importance of agriculture, agricultural ecology, genetics, farm inputs and agricultural development.
• Agronomy includes soil formation, soil fertility, crop production, plant propagation, cropping systems, weeds, pests, diseases, forestry and crop improvement.
• You should understand the major crop groups and their propagation, husbandry, harvesting, processing, storage, pests, diseases and economic importance.
• Soil topics require knowledge of soil profile, soil water, soil pH, nutrients, conservation, irrigation and drainage.
• Important practical and calculation areas include genetic ratios, seed rate, plant density, fertilizer ratios and soil measurements.
• Animal Production covers farm animal classification, reproduction, nutrition, management, diseases, parasites and animal improvement.
• Fisheries, wildlife management and bee-keeping are also important parts of Animal Production.
• Agricultural Economics covers land, labour, capital, management, demand and supply, farm records, insurance and marketing.
• You should be able to interpret agricultural graphs and calculate areas such as elasticity, gross and net profit, depreciation and salvage value.
• Agricultural Extension deals with how useful agricultural knowledge and improved practices are communicated to farmers.
• Agricultural Technology covers surveying, farm tools, machinery, mechanization, processing, storage, biotechnology and ICT.
• Learn how to identify and maintain important farm tools, machinery and surveying equipment.
• Agricultural research requires you to understand hypothesis, treatment, control, experimental results and simple measures of central tendency.
• Combine reading with identification, calculations, comparison, interpretation and practical application when revising Agriculture.

Frequently Asked Questions

Conclusion

The JAMB Area of Concentration for Agriculture Subject 2027/2028 covers five major areas: General Agriculture, Agronomy, Animal Production, Agricultural Economics and Extension, and Agricultural Technology.

To prepare properly, you should understand both the theoretical and practical sides of Agriculture. Pay attention to topics that require identification, calculations, comparison, data interpretation and practical application.

Make sure you can connect related areas, such as soil fertility with crop production, animal nutrition with livestock management, and farm production with marketing and management. You should also practise important calculations and learn how to interpret agricultural information correctly.

Use the topic areas to guide your revision and give enough attention to each of the five sections.

If you have any questions about the JAMB Agriculture topics, you can ask in the comment section. You can also share this guide with other students who may find it useful.