How to Pass JAMB Agricultural Science in 2027

Agricultural Science is a subject that rewards the student who sees farming as a system: soil feeds the crop, the crop feeds the animal, the animal feeds the family and the market, and money and records hold the whole thing together. Candidates who study it as ten disconnected chapters find it a blur of long names. Candidates who see the system find the names fall into place.

This guide is for the 2027 cycle. It organises Agricultural Science into four connected blocks and gives you a way to learn each.

The format

Agricultural Science is a chosen subject for courses in Agriculture, Food Science, Animal Science, Forestry, Fisheries and some Biology-related programmes. It carries 40 questions in the UTME CBT. Confirm the current format and time limit at jamb.gov.ng. Our subject combination guide will help you check whether it fits your course.

Block one: soil and water

Soil Science is the foundation, so start here. Learn:

• Soil formation: weathering of rocks and the role of organic matter.
• Soil profile: the horizons, from the topsoil downwards.
• Soil types: sandy, clay, loamy. Loam is usually the most suitable for crops because it balances drainage and water retention.
• Soil fertility: nutrients, their sources and functions, and how fertility is lost (erosion, leaching, continuous cropping) and restored (manure, fertilisers, rotation, fallowing).

Comparing organic and inorganic fertilisers is a natural way to test fertility knowledge, so keep this contrast at your fingertips:

Also learn the purposes of irrigation and drainage, and the main soil conservation methods, such as mulching, contour ploughing, terracing and cover crops.

Block two: crops

For crop production, learn each crop family and its management. Use the same template for every crop:

1. Climate and soil needs.
2. Land preparation and planting method.
3. Maintenance (weeding, fertilising, pest control).
4. Harvesting and storage.
5. Uses.

Classify crops by use (cereals, root and tuber crops, legumes, fibre crops, cash crops, vegetables). Questions often ask which crop belongs in which group. Learn the legumes well, because they connect to soil fertility: they host nitrogen-fixing bacteria in their root nodules and so add nitrogen to the soil. This makes them useful in crop rotation and mixed cropping.

Learn the difference between the main cropping systems: shifting cultivation, bush fallowing, mixed cropping, crop rotation and monoculture. For each, note one advantage and one disadvantage. That is usually enough to separate the options in a multiple-choice question.

Block three: animals

Animal Production questions cover classification of farm animals, feeding, housing, breeding, health and products. A useful starting fact: ruminants have a four-part stomach (rumen, reticulum, omasum and abomasum), which lets them digest fibrous feed such as grass. Poultry are non-ruminants with a gizzard.

Make a table for each major group.

Learn the common diseases by cause (bacterial, viral, parasitic), the principle of vaccination and quarantine, and the idea of balanced rations. For breeding, understand the difference between natural and artificial insemination, and the meaning of terms like hybrid and cross-breeding.

Fishery and Forestry belong to this block as well. For fishery, learn the types of fish farming (pond, cage) and methods of preservation. For forestry, learn the uses of forests and conservation measures. Keep two near-twins apart: afforestation is planting trees on land that has not recently been forest, while reforestation is replanting where forest was cut down.

Block four: farm management and economics

This block is where calculations live. Learn the key terms: capital, labour, land, enterprise; fixed and variable costs; revenue; gross margin.

An original example:

A farmer sells maize worth ₦300,000. Variable costs (seed, fertiliser, labour) were ₦120,000. The gross margin is: ₦300,000 − ₦120,000 = ₦180,000.

Know the difference between gross margin and net profit (which also subtracts fixed costs). Learn the types of records farmers keep (inventory, production, sales, labour) and why. For Agricultural Economics, study demand and supply for farm produce, marketing channels, the role of cooperatives, agricultural credit and the problems of agriculture in Nigeria. These are good places to apply the knowledge from your Economics classes if you have them.

Farm Mechanisation and Engineering questions focus on tools and machines: implements for tillage, planting, harvesting, and their maintenance. Learn the name, use and one care point for each tool.

What a computer-based test rewards

Because the UTME is an objective, computer-based test, Agric rewards quick, precise recall. Many options in this subject are look-alikes: two soil types, two cropping systems, two kinds of fertiliser. Learn the single feature that separates each pair, as in the fertiliser table above, and you can eliminate wrong options in seconds. When a farm sum appears, write the working on rough paper and check the units before you choose.

How to learn faster

Agricultural Science is full of lists, so use these tools:

• Tables for classification (crops, animals, soil).
• Cause and effect for problems (erosion, pests, low yield).
• Diagrams for the ruminant stomach, a plough, a soil profile.
• A reason for each practice: why plant a cover crop, why vaccinate, why rotate. If you know the reason, you can answer questions in different words.

For more on recall methods, read how to memorise faster.

Mistakes to avoid

1. Confusing crop rotation with mixed cropping. Rotation is over time, mixed cropping is at the same time on the same land.
2. Treating all fertilisers as the same. Organic and inorganic fertilisers have different advantages.
3. Forgetting the units in farm sums.
4. Mixing up afforestation (new forest on bare land) and reforestation (replacing felled forest).
5. Ignoring the shorter topics like Fishery and Forestry, which are quick marks.

A study plan

See JAMB Agricultural Science topics to focus on for a priority view.

Practise on screen

ExamPadi has free JAMB Agricultural Science practice with explanations and a timed CBT mode. Start with the 2025 JAMB Agricultural Science past questions. No one can promise a score, but fitting each topic into the farm system makes revision easier. Tonight, draw one diagram that connects soil, crops, animals and money, and label each link.