Lesson Notes By Weeks and Term v4 - SHS 2

Lesson Video

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Performance objectives

• Explain the importance of natural resource conservation.
• Identify techniques for conserving natural resources.
• Demonstrate skills in mushroom cultivation.
• Present findings on efficient mushroom production.

Lesson summary

Good morning, class. Today, we are discussing a very important topic: Principles of Natural Resource Conservation in Agriculture. Ghana is blessed with rich natural resources like fertile land, clean water, and forests. However, if we do not use them wisely in our farming activities, we risk losing them forever. This affects our ability to grow food and build our nation. We will learn the main ideas behind conserving our resources and then focus on a very exciting and profitable farming method that perfectly demonstrates these principles: Mushroom Cultivation.

Lesson notes

Part A: What are the Principles of Natural Resource Conservation in Agriculture?

Natural Resource Conservation in agriculture means using our land, water, plants, and animals in a way that is wise, efficient, and sustainable. The goal is to meet our current needs for food and income without destroying the ability of future generations to meet their own needs.

Key Principles: Waste Valorisation (Turning Waste into Value): Explanation: This principle involves taking materials that are considered waste from one agricultural process and converting them into a valuable product in another. Instead of burning rice straw, corn cobs, or sawdust, which causes air pollution, we can use them as a resource. Ghanaian Example: Using cocoa pod husks to make local soap ("alata samina") or potash. In our lesson today, we will focus on using sawdust from timber processing to grow mushrooms. Sustainable Land Use and Intensification: Explanation: This means getting the maximum possible yield from a small piece of land without degrading the soil or environment. This is important as our population grows and land becomes scarcer. It reduces the need to cut down forests for new farms. Ghanaian Example: Mushroom farming is a perfect example. It can be done vertically (stacking bags on shelves) in a small room or shed, producing a large amount of food in a very small area. This is a form of vertical farming. Nutrient Recycling: Explanation: This is the process of returning nutrients to the soil to maintain fertility. In nature, when plants and animals die, they decompose and their nutrients go back into the soil. We can imitate this in farming. Ghanaian Example: Using compost made from kitchen scraps and farm waste to fertilize a vegetable garden. The spent substrate from mushroom farming makes an excellent organic fertilizer for crops because the mycelium has already broken down the tough materials, making nutrients available. Part B: Step-by-Step Guide to Oyster Mushroom Cultivation

Oyster mushrooms (*Pleurotus ostreatus*) are the most commonly cultivated variety in Ghana because they are relatively easy to grow and thrive in our climate. Mushroom cultivation perfectly illustrates the conservation principles we just discussed.

Evaluation guide

• Demonstrat e the skills in the cultivation of mushrooms.
• Experiential learning: Learners in mixed -ability groups undertake field trips to
• nearby mushroom farms or watch a documentary on various techniques involved
• in the production of mushrooms.