Crop Diseases

Contents & notes: what this topic covers

Under Crop Diseases, the JAMB Agricultural Science syllabus expects you to study:

• 13. Crop Diseases a. Identification of disease–causing organisms both in store and in the field.
• b. A simple account of diseases caused
• by fungi, bacteria, nematodes and viruses; symptoms, the nature of the damage, methods of transmission and
• common methods of control.
• c. Side effects of application of preventive and control methods e.g.
• pollution, poisoning and distribution of ecosystem.

Study notes & guidance

Study Crop Diseases using a recommended Agricultural Science textbook that follows the JAMB syllabus. Work through the contents listed above one by one, make brief notes in your own words, and then practise as many questions on this topic as you can — in Agricultural Science, understanding and steady practice matter far more than memorising. Use the objectives below as a checklist: if you can do each one confidently, you have mastered this topic.

Objectives — candidates should be able to

After studying Crop Diseases, you should be able to:

1. Distinguish between common store and field disease– causing organisms. relate various disease-causing organisms to the damage caused, symptoms and their mode of spread. apply appropriate control methods. Agriculture relate each control method to its side effect.

These objectives are from the official JAMB syllabus. Use them as a checklist — if you can do each one confidently, you have mastered this topic.

Source: official JAMB UTME Agricultural Science syllabus (IBASS, jamb.gov.ng). Reproduced for study use. Last checked: 17 Sept 2026. Always confirm the current syllabus on the official portal.