Types of Cropping Systems Sole, Relay and Alley Cropping for SS 1

Class: SS 1
Term: Third Term
Week: 6
Age: 15 years
Duration: 60 minutes
Subject: Crop Production and Horticulture
Curriculum Theme: Farming System
Focal competence: Carry out sole and multiple cropping systems using different cropping patterns
Key competencies/values: Critical Thinking

Skills:

• Carry out sole cropping
• Carry out multiple cropping

Previous Lesson: Cropping Systems, Importance and Types
Topic: Cropping Systems: Types Of Cropping System
Subject Matter: Types of cropping system

Specific Objectives

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

Cognitive Domain

• Explain different types of cropping systems.

Psychomotor Domain

• Carry out different sole and multiple cropping.

Reference Materials

The following resources were used in planning this lesson:

• 2025 New Revised Senior Secondary Education Curriculum (SSEC)
• Relevant State Unified Scheme of Work
• The HeadTeacher Scheme of work For The New Revised Senior Secondary Education Curriculum (SSEC)

Instructional Materials

The teacher will teach this lesson with the aid of:

• Pictures showing different cropping systems (sole, relay, alley)
• Charts illustrating cropping patterns
• Actual planting materials (e.g., seeds, seedlings of different crops)
• Basic planting tools (e.g., hoes, cutlasses, trowels)
• Fertilizers

Rationale for the Lesson

Understanding different cropping systems is essential for students to appreciate how farmers maximise land use and resources. This lesson provides practical knowledge on optimising crop production, which is fundamental for sustainable agriculture and food security. It helps students develop critical thinking skills in choosing appropriate farming methods.

Prerequisite/Previous Knowledge

Students should have basic knowledge of farming systems and general crop production practices.

Lesson Content/Board Summary

Cropping Systems: Types Of Cropping System

Introduction to Cropping Systems

A cropping system refers to the pattern of growing crops on a piece of land over a fixed period. It involves the crops grown, their sequence, and the management practices applied to them. The choice of a cropping system depends on factors such as climate, soil type, available resources, and economic considerations.

Types of Cropping Systems

Cropping systems can be broadly classified based on the number of crops grown simultaneously or sequentially on the same land. The main types include:

1. Sole/Mono Cropping
2. Relay Cropping
3. Alley Cropping

Sole/Mono Cropping

Sole cropping, also known as mono cropping, is the practice of growing only one type of crop on a given piece of land at a time. This is the most common and traditional cropping system.

1. Characteristics:
   1. Only one crop species is cultivated.
   2. The entire field is dedicated to a single crop.
   3. Management practices are simplified for that specific crop.
2. Field Context:
   1. Often used for large-scale commercial farming.
   2. Common for staple crops like maize, rice, wheat, or cassava where mechanisation is extensive.
3. Practical Management Considerations:
   1. Advantages:
      1. Easy to manage and mechanise.
      2. Specific pest and disease control measures can be applied.
      3. Harvesting is straightforward.
      4. Yields of the single crop can be high if conditions are optimal.
   2. Disadvantages:
      1. Higher risk of total crop failure due to pests, diseases, or adverse weather.
      2. Can lead to rapid depletion of specific soil nutrients.
      3. Less efficient use of land and resources compared to multiple cropping.
      4. May require more chemical inputs (fertilisers, pesticides).

Relay Cropping

Relay cropping is a form of multiple cropping where a second crop is planted into a standing first crop before the first crop is harvested. Both crops spend a part of their life cycle together on the field.

1. Characteristics:
   1. The second crop is sown or planted when the first crop is nearing maturity but still on the field.
   2. There is an overlap period where both crops grow simultaneously.
   3. The first crop is harvested without significantly disturbing the second crop.
2. Field Context:
   1. Often practiced in areas with long growing seasons or where farmers want to maximise harvests from a limited land area.
   2. Examples include planting maize into maturing rice, or planting vegetables into a standing cereal crop.
3. Practical Management Considerations:
   1. Advantages:
      1. Maximises land use efficiency by extending the cropping period.
      2. Increases total yield per unit area per year.
      3. Reduces soil erosion by maintaining continuous ground cover.
      4. Can lead to better utilisation of residual soil moisture and nutrients.
   2. Disadvantages:
      1. Requires careful timing of planting and harvesting.
      2. Competition for light, water, and nutrients between the two crops can occur.
      3. Mechanisation can be difficult.
      4. Pest and disease management can be more complex.
      5. Harvesting the first crop must be done carefully to avoid damaging the second.

Alley Cropping

Alley cropping is an agroforestry system where rows of food crops or forage crops are grown in alleys between widely spaced rows of trees or shrubs (usually leguminous trees).

1. Characteristics:
   1. Trees or shrubs are planted in rows, forming “alleys.”
   2. Annual crops are cultivated in the spaces between these tree rows.
   3. The trees are often pruned periodically to provide mulch for the crops and reduce shading.
2. Field Context:
   1. Common in tropical regions, particularly in areas prone to soil degradation.
   2. Leguminous trees like Leucaena leucocephala or Gliricidia sepium are often used.
   3. Crops grown in alleys can include maize, cassava, yams, or various vegetables.
3. Practical Management Considerations:
   1. Advantages:
      1. Improves soil fertility through nitrogen fixation by leguminous trees and organic matter from pruned leaves (mulch).
      2. Reduces soil erosion and conserves soil moisture.
      3. Provides additional products like fuelwood, fodder, or timber from the trees.
      4. Enhances biodiversity.
      5. Can provide shade for shade-loving crops.
   2. Disadvantages:
      1. Competition between trees and crops for light, water, and nutrients if not properly managed (e.g., through pruning).
      2. Requires more labour for tree pruning and management.
      3. Tree establishment takes time before benefits are fully realised.
      4. Can reduce the yield of alley crops if trees are not managed well.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Group Work, Practical Activity.

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Questioning/Recall

Teacher’s Activity: The teacher greets the students and asks them to recall what they learned about farming systems in the previous lesson. The teacher then introduces the topic of cropping systems as a part of farming systems.

Pupils’ Activity: Pupils respond to the teacher’s questions and listen attentively to the introduction.

Learning Point: Farming systems recall

Step 2: Explanation of Sole/Mono Cropping

Time: 10 minutes

Teaching Skill: Explanation/Visualisation

Teacher’s Activity: The teacher explains sole cropping, its characteristics, advantages, and disadvantages. The teacher uses pictures and charts to illustrate fields with only one crop. The teacher guides students to discuss in groups what they observe.

Pupils’ Activity: Pupils observe the pictures/charts, listen to the explanation, and discuss in groups, identifying features of sole cropping.

Learning Point: Sole cropping understanding

Step 3: Practical Demonstration of Sole Cropping

Time: 10 minutes

Teaching Skill: Demonstration/Guided Practice

Teacher’s Activity: The teacher demonstrates how sole cropping is carried out by showing how to plant a single crop (e.g., maize) in a designated small plot or container, explaining spacing and care. The teacher guides students to practice in groups.

Pupils’ Activity: Pupils observe the demonstration and then practice planting a single crop in groups, following the teacher’s guidance.

Learning Point: Sole cropping practice

Step 4: Explanation of Relay Cropping

Time: 10 minutes

Teaching Skill: Explanation/Visualisation

Teacher’s Activity: The teacher explains relay cropping, highlighting its characteristics, advantages, and disadvantages. The teacher uses pictures and charts showing two crops overlapping in growth. The teacher guides students to discuss the benefits and challenges.

Pupils’ Activity: Pupils observe the pictures/charts, listen to the explanation, and discuss in groups, identifying features of relay cropping.

Learning Point: Relay cropping understanding

Step 5: Explanation of Alley Cropping

Time: 8 minutes

Teaching Skill: Explanation/Visualisation

Teacher’s Activity: The teacher explains alley cropping, its characteristics, advantages, and disadvantages, using pictures and charts of trees with crops in between. The teacher emphasises the role of leguminous trees and pruning.

Pupils’ Activity: Pupils observe the pictures/charts, listen to the explanation, and contribute to discussions on alley cropping.

Learning Point: Alley cropping understanding

Step 6: Practical Discussion on Multiple Cropping

Time: 5 minutes

Teaching Skill: Discussion/Application

Teacher’s Activity: The teacher facilitates a discussion on how relay and alley cropping are forms of multiple cropping. The teacher guides students to consider the practical aspects of carrying out these systems, including the tools and materials needed (planting materials, tools, fertilizers).

Pupils’ Activity: Pupils participate in the discussion, sharing ideas on how to implement multiple cropping systems and the resources required.

Learning Point: Multiple cropping application

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. What is sole cropping?
2. Give two advantages of relay cropping.
3. Explain the concept of alley cropping.
4. Mention one disadvantage of sole cropping.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Cropping systems assessment

Step 8: Note-Taking

Time: 10 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes on the types of cropping systems into their notebooks.

Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.

Learning Point: Note-taking skills

Step 9: Conclusion

Time: 2 minutes

Teaching Skill: Summarisation

Teacher’s Activity: The teacher summarises the lesson by reiterating the importance of understanding different cropping systems for effective and sustainable crop production. The teacher encourages students to observe these systems in their local environment.

Pupils’ Activity: Pupils listen to the summary and ask any final questions.

Learning Point: Lesson consolidation

Continuous Assessment/Further Study

Type: Homework/Further Reading

Instruction: Research and write short notes on the following:

1. Identify two crops commonly grown using sole cropping in your locality.
2. Suggest a suitable crop combination for relay cropping in your region, explaining your choice.
3. Discuss how alley cropping can help in soil conservation.

Lesson Keywords

• Cropping System – The pattern of growing crops on a piece of land over a period.
• Sole Cropping – Growing only one type of crop on a piece of land at a time.
• Mono Cropping – Another term for sole cropping.
• Relay Cropping – Planting a second crop into a standing first crop before harvest.
• Alley Cropping – Growing crops between rows of trees or shrubs.
• Multiple Cropping – Growing two or more crops on the same land in a year.

Differentiation

For students who grasp concepts quickly, encourage them to research and present on other forms of multiple cropping (e.g., intercropping, mixed cropping). For students needing more support, provide simplified diagrams and one-on-one guidance during practical activities and note-taking, focusing on identifying key characteristics of each cropping system.

Suggested Lesson Videos

For visual reinforcement, search on YouTube for: types of cropping systems for SS1 agriculture