Meaning and Methods of Crop Propagation | Advantages and Disadvantages of Crop Propagation by Seeds and Vegetation Organs JSS 2 Agriculture

AGRICULTURE 

JUNIOR SECONDARY SCHOOL (JSS 2)

THEME – PROCESSES OF AGRICULTURAL PRODUCTION

TOPIC – CROP PROPAGATION AND CULTURAL PRACTICES

INSTRUCTIONAL MATERIALS

1. Pictures and charts of crops propagated by: seeds and vegetative organs.

2. Crop propagation specimens (seeds, vegetative organs), soil, tins/pots, water, hand trowel, etc.

3. Simple farm tools – Hoe, Cutlass, Rake, Hand trowel, etc.

4. School farm.

LEARNING OBJECTIVES

By the end of the lesson, students should be able to:

1. define crop propagation.

2. state methods of crop propagation.

3. state the advantages and disadvantages of crop propagation methods.

CONTENTS OF THE LESSON

LESSON 1 – MEANING OF CROP PROPAGATION

Crop propagation is the process of growing or planting new ones either by seeds, cuttings, or other plant parts

METHODS OF CROP PROPAGATION

There are two (2) types of propagation, sexual and asexual.

A. SEXUAL PROPAGATION 

Sexual propagation is the process of growing new plants by seeds or spores. It is also known as seed propagation.

For example – maize, bean, etc.

B. ASEXUAL PROPAGATION 

Asexual propagation is the process of growing new plants by using roots, stems, or leaves of a parent plant. It is also known as vegetative propagation.

For example – cassava, sweet petato, etc.

LESSON 2 – ADVANTAGES AND DISADVANTAGES OF CROP PROPAGATION 

ADVANTAGES OF CROP PROPAGATION 

A. CROP PROPAGATION BY SEEDS 

It is easy to carry, store, procure, sow, etc.

 

B. CROP PROPAGATION BY VEGETABLE ORGANS

1. It is more resistant to diseases and pests.

2. It is matures and produces early.

3. It can withstand adverse soil and weather conditions, etc.

DISADVANTAGES OF CROP PROPAGATION 

A. CROP PROPAGATION BY SEED

1. It reduces the amount for consumption.

2. It does not germinate easily due to dormancy.

 

B. CROP PROPAGATION BY VEGETATIVE ORGANS

1. It is prones to diseases.

2. The plant is always short lived.

LESSON PRESENTATION

TEACHER’S ACTIVITIES

The teacher,

1. displays charts and pictures on crop propagation.

2. collects and displays samples of seeds and vegetative organs of named crop plants.

3. demonstrates some of these operations, e.g. Thinning, Supplying, Mulching etc.

4. supervizes practical on cultural practices.

5. summarizes the lesson on the board.

 

 

STUDENT’S ACTIVITIES

The students,

1. study charts and pictures provided and list crops propagated vegetatively and by seeds

2. demonstrate crop propagation – by seed, vegetative organs.

3. copy board summary.

LESSON EVALUATION

Teacher asks students to,

2. identify two methods of crop propagation.

3. state two advantages of propagation by seed and vegetative organs.

4. list three examples of crops propagated by seed, vegetative and organs.