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Causal Agents of Crop Diseases

AGRICULTURE 

PRE-VOCATIONAL STUDIES 

THIRD TERM 

WEEK 3

PRIMARY 5

THEME: CONTROL OF CROP WEEDS, PESTS AND DISEASES

PREVIOUS LESSON – BASIC SCIENCE AND TECHNOLOGY PRIMARY 4

TOPIC – Common Pests and Diseases of Crop plants 

PERFORMANCE OBJECTIVES

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor) and should be able to:

  1. define and identify common diseases on our farm.
  2. describe the damages caused by diseases.
  3. state ways of controlling diseases.
  4. list the causes of plant diseases.
  5. state how the disease can be controlled.

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

  1. Fresh or preserved specimens of diseases.
  2. Specimen of maize, bean, guinea corn seeds infested by weevil, beetle or termite.
  3. Chart showing local farm pests.
  4. Charts and posters of squirrels, rats, grass, cutter, birds, crabs, etc.

METHOD OF TEACHING – Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

REFERENCE MATERIALS

  1. Scheme of Work
  2. 9 – Years Basic Education Curriculum
  3. Course Book
  4. All Relevant Material
  5. Online Information

Related Posts 

CONTENT OF THE LESSON 

INTRODUCTION – DISEASES 

A disease is any abnormal condition that damages a plant, reduce the yield or usefulness to man.

CAUSAL AGENTS OF CROP DISEASES 

  1. Fungi
  2. Bacteria
  3. Viruses
  4. Nematodes

SOME COMMON CROP DISEASES

  1. Maize smut
  2. Cassava mosaics
  3. Tomato rot
  4. Blights
  5. Root rots
  6. Groundnut rosette

PRESENTATION

  • To deliver the lesson, the teacher adopts the following steps:
  1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;
  1. Displays and identifies chart showing crop diseases.
  2. Pupil’s Activities – Identify chart showing crop diseases.
  3. Defines pests and diseases of crop plants.
  4. Pupil’s Activities – Define pests and diseases of crop plants.
  5. Discusses the damages done to the crops by diseases.
  6. Pupil’s Activities – Describe the damages done to the crops by diseases.
  7. Guides pupils to collect common diseases of crop plants.
  8. Pupil’s Activities – Participate in collection of common diseases.

CONCLUSION

  • To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.
  • Assignment
  • Next Lesson – Some common crop diseases.

LESSON EVALUATION 

Pupils to:

  1. State the meaning of farm diseases.
  2. Name five diseases in the locality.
  3. Identify two damages caused by diseases.
  4. List three causal agents of crop diseases.

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