Note for teachers using this lesson plan
This lesson introduces students to the fundamental differences between organic and conventional farming practices. Teachers should prepare by gathering visual aids, such as video clips or pictures, illustrating both farming methods and materials used for composting. Emphasise the practical aspects of organic farming, particularly the production of local manure, to ensure students can differentiate between the two systems and appreciate sustainable agricultural practices by the end of the lesson.
Class: SS 1
Term: Second Term
Week: 10
Age: 15 years
Duration: 60 minutes
Subject: Agricultural Science
Curriculum Theme: Agricultural management
Focal competence: Practicing organic farming
Key competencies/values: Collaboration; Environmental Literacy
Skills:
- Composting manure to reduce cost of purchasing fertilizer and ensuring environmental standards
Previous Lesson: Organic Farming and Its Practices
Topic: Organic Farming: Differences Between Organic And Conventional Farming
Subject Matter: Differences between organic and conventional farming
Specific Objectives
By the end of the lesson, pupils/students should be able to:
Cognitive Domain
- Define organic farming.
- Define conventional farming.
- Differentiate between organic and conventional farming.
Affective Domain
- Appreciate the importance of sustainable farming practices.
- Participate actively in group discussions.
Psychomotor Domain
- Identify materials suitable for composting.
- Outline the basic process of composting local manure.
- Produce local manure.
Social Domain
- Discuss the environmental benefits of organic farming.
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)
- Agricultural Science for Senior Secondary Schools textbook
Instructional Materials
The teacher will teach this lesson with the aid of:
- Video clips describing organic manure production
- Pictures illustrating organic and conventional farms
- Samples of animal dungs (e.g., cow dung, poultry droppings)
- Samples of composted manure
- Chart showing differences between organic and conventional farming
Rationale for the Lesson
This lesson is important because it equips students with knowledge about different farming systems, enabling them to make informed decisions about sustainable agriculture. Understanding these differences helps in promoting environmentally friendly practices and appreciating the benefits of organic produce. It also lays a foundation for practical skills in local manure production.
Prerequisite/Previous Knowledge
Students should have basic knowledge of different types of farming and the importance of agriculture in Nigeria.
Lesson Content/Board Summary
Organic Farming: Differences Between Organic And Conventional Farming
Meaning of Organic Farming
Organic farming is an agricultural system that uses ecologically based pest controls and biological fertilizers derived largely from animal and plant wastes and nitrogen-fixing cover crops. It aims to produce food while enhancing ecological balance and biodiversity.
Key characteristics of organic farming include:
- Avoidance of synthetic chemical fertilizers, pesticides, herbicides, and genetically modified organisms (GMOs).
- Emphasis on soil health through practices like composting, crop rotation, and cover cropping.
- Use of natural methods for pest and disease control, such as biological control and resistant varieties.
- Promotion of biodiversity and ecological balance on the farm.
Meaning of Conventional Farming
Conventional farming, also known as industrial agriculture, is a system that relies heavily on synthetic chemical inputs to maximise crop yields and animal production. It typically involves monoculture, intensive use of machinery, and a focus on efficiency and large-scale production.
Key characteristics of conventional farming include:
- Extensive use of synthetic fertilizers to provide nutrients to crops.
- Application of chemical pesticides and herbicides to control pests, diseases, and weeds.
- Use of genetically modified organisms (GMOs) to enhance crop traits like pest resistance or yield.
- Often involves monoculture (growing a single crop over a large area) and intensive tillage.
Differences Between Organic and Conventional Farming
The table below highlights the key differences between organic and conventional farming practices:
| Feature | Organic Farming | Conventional Farming |
|---|---|---|
| Inputs | Uses natural inputs like compost, animal manure, green manure, and biological pest controls. | Relies on synthetic chemical fertilizers, pesticides, herbicides, and growth hormones. |
| Soil Fertility | Maintains and improves soil health through crop rotation, composting, and cover cropping. | Uses synthetic fertilizers which can degrade soil structure and microbial life over time. |
| Pest & Weed Control | Employs biological control, crop rotation, hand weeding, and natural repellents. | Uses synthetic chemical pesticides and herbicides for quick and broad-spectrum control. |
| Genetically Modified Organisms (GMOs) | Prohibits the use of GMOs. | Often uses GMO seeds to enhance yield, pest resistance, or herbicide tolerance. |
| Environmental Impact | Promotes biodiversity, reduces pollution, conserves soil and water resources. | Can lead to soil erosion, water pollution from runoff, and reduced biodiversity. |
| Yield | Generally lower yields, especially during transition, but sustainable in the long term. | Aims for high yields per unit area, often at the expense of long-term sustainability. |
| Product Quality | Products are often chemical-free, with potential for higher nutritional value. | Products may contain chemical residues; focus is on quantity and appearance. |
| Certification | Requires strict certification processes to be labelled “organic.” | No specific certification related to farming methods, only general food safety standards. |
Practical Significance of Organic Farming (Composting Manure)
Organic farming offers several practical benefits, including environmental sustainability, healthier food, and reduced reliance on external inputs. A key practice in organic farming is composting manure, which is essential for soil fertility and nutrient cycling.
Composting is the process of decomposing organic matter (like animal dung, crop residues, and kitchen waste) into a rich soil amendment called compost. This compost serves as a natural fertilizer, improving soil structure, water retention, and nutrient availability for plants.
Steps involved in producing local manure through composting:
- Gather Materials: Collect organic materials such as animal dung (cow, goat, poultry), plant residues (leaves, grass, straw), kitchen waste (vegetable peels), and wood ash.
- Choose a Site: Select a shaded, well-drained area for the compost heap or pit.
- Layering: Start with a layer of coarse materials (twigs) for aeration, then alternate layers of “greens” (nitrogen-rich, like fresh dung, fresh grass) and “browns” (carbon-rich, like dry leaves, straw).
- Moisture: Keep the heap moist, like a wrung-out sponge. Water if it’s too dry.
- Aeration: Turn the heap regularly (every 1-2 weeks) to introduce air, which speeds up decomposition.
- Maturity: The compost is ready when it is dark brown, crumbly, and has an earthy smell, usually within 2-3 months.
Teaching Methods/Instructional Techniques
Discussion, Explanation, Question and Answer, Group Work, Demonstration, Visual Aids.
Instructional Procedures
Step 1: Introduction
Time: 5 minutes
Teaching Skill: Engaging/Questioning
Teacher’s Activity: The teacher greets the students and asks them about different ways farmers grow crops and raise animals in their communities. The teacher then introduces the topic, “Organic Farming: Differences Between Organic And Conventional Farming.”
Pupils’ Activity: Pupils respond to the questions and listen attentively to the introduction.
Learning Point: Farming methods overview
Step 2: Meaning of Organic Farming
Time: 10 minutes
Teaching Skill: Explanation/Visualisation
Teacher’s Activity: The teacher explains the meaning of organic farming, highlighting its principles and the types of inputs used. The teacher shows video clips describing organic manure production and pictures of organic farms.
Pupils’ Activity: Pupils listen, observe the video clips and pictures, and ask questions for clarification.
Learning Point: Organic farming definition
Step 3: Meaning of Conventional Farming
Time: 10 minutes
Teaching Skill: Explanation/Comparison
Teacher’s Activity: The teacher explains the meaning of conventional farming, discussing its characteristics and the synthetic inputs commonly employed. The teacher uses pictures to illustrate conventional farming practices.
Pupils’ Activity: Pupils listen, observe the pictures, and note the key features of conventional farming.
Learning Point: Conventional farming definition
Step 4: Group Discussion on Differences
Time: 10 minutes
Teaching Skill: Facilitation/Collaboration
Teacher’s Activity: The teacher divides students into groups and guides them to discuss the differences between organic and conventional farming based on their understanding from the previous explanations. The teacher moves around to provide support and clarify misconceptions.
Pupils’ Activity: Pupils discuss in their groups, comparing and contrasting the two farming systems.
Learning Point: Organic vs. conventional differences
Step 5: Elaboration of Differences
Time: 5 minutes
Teaching Skill: Clarification/Reinforcement
Teacher’s Activity: The teacher invites group representatives to share their findings. The teacher then uses a chart to elaborate on the key differences, covering aspects like inputs, pest control, soil fertility, and environmental impact.
Pupils’ Activity: Pupils listen to group presentations and the teacher’s elaboration, making corrections and adding to their notes.
Learning Point: Detailed farming distinctions
Step 6: Producing Local Manure
Time: 5 minutes
Teaching Skill: Demonstration/Practical Application
Teacher’s Activity: The teacher discusses the practical significance of organic farming, focusing on the production of local manure. The teacher identifies samples of animal dungs suitable for composting and briefly outlines the composting process.
Pupils’ Activity: Pupils observe the samples, listen to the explanation, and ask questions about composting.
Learning Point: Local manure production
Step 7: Evaluation/Review
Time: 5 minutes
Teaching Skill: Questioning/Assessment
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:
- What is organic farming?
- State two differences between organic and conventional farming.
- Mention two materials that can be used to produce local manure.
- Why is organic farming considered environmentally friendly?
Pupils’ Activity: Pupils answer orally and in writing.
Learning Point: Farming concepts understanding
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 definitions and differences between organic and conventional farming, and the steps for composting local manure, into their notebooks.
Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.
Learning Point: Board summary recording
Step 9: Conclusion
Time: 5 minutes
Teaching Skill: Summarising/Consolidation
Teacher’s Activity: The teacher briefly summarises the main points of the lesson, reinforcing the importance of understanding the differences between organic and conventional farming for sustainable agriculture. The teacher encourages students to consider the benefits of organic practices.
Pupils’ Activity: Pupils listen to the summary and ask any final questions.
Learning Point: Lesson consolidation
Continuous Assessment/Further Study
Type: Homework
Instruction: Answer the following questions in your notebook.
- List three advantages of organic farming over conventional farming.
- Identify five local materials available in your community that can be used for composting manure.
- Briefly explain why composting is important in organic farming.
Lesson Keywords
- Organic farming – An agricultural system that uses natural inputs and methods to produce food, avoiding synthetic chemicals.
- Conventional farming – An agricultural system that relies heavily on synthetic chemical inputs to maximise crop yields.
- Compost – Decomposed organic matter used as a soil amendment and natural fertilizer.
- Synthetic fertilizers – Man-made chemical compounds used to supply nutrients to crops.
- Pesticides – Chemical substances used to kill pests, including insects, weeds, and fungi.
- Crop rotation – The practice of growing a series of different types of crops in the same area in sequenced seasons.
Differentiation
For students needing support, the teacher can provide simplified comparison charts and focus on identifying key terms and basic differences. Advanced learners can research specific case studies of organic farms in Nigeria or design a simple composting plan for their school garden.
Suggested Lesson Videos
YouTube search: organic vs conventional farming SS1 agricultural science
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