Lesson Notes By Weeks and Term v4 - SHS 1

Lesson Video

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Performance objectives

• Identify emerging technologies in crop production.
• Explain how these technologies improve farming.
• Discuss the benefits and challenges of their use.

Lesson summary

Welcome, students! Today, we are moving beyond the traditional image of farming with a cutlass and hoe. We will explore the exciting world of "agritech" – the new technologies that are making agriculture, especially the cultivation of vegetables and beautiful ornamental plants, smarter, easier, and more profitable. In a country like Ghana, where we want to ensure food security and create modern jobs for the youth, understanding these technologies is crucial. This lesson will show you how science and technology are transforming our farms and gardens, making agriculture a promising career path for your generation.

Lesson notes

What are "Emerging Technologies in Agriculture"? These are new, innovative tools, techniques, and systems that are used to improve farming efficiency, increase yields, and reduce physical labour. Think of them as the "smartphones" of farming, replacing the "landline phones" of old methods. For vegetable and ornamental growers, this means more produce and healthier, more beautiful plants with less effort.

Let's explore some key technologies: Agricultural Drones (Unmanned Aerial Vehicles - UAVs) What is it? Drones are small, remote-controlled aircraft without a pilot on board. In agriculture, they are equipped with cameras, sensors, and tanks for spraying. How it makes work easier for Vegetable & Ornamental Growers: Precision Spraying: Instead of a farmer carrying a heavy knapsack sprayer and walking through a whole cabbage or tomato farm, a drone can be programmed to fly over the farm and spray pesticides, liquid fertilizers, or weedicides evenly and quickly. This saves time, reduces the farmer's exposure to chemicals, and uses fewer chemicals. Crop Health Monitoring: Drones with special cameras (multispectral cameras) can fly over a field and detect problems that the human eye cannot see. They can spot areas where plants are stressed due to lack of water, disease, or pest attack. This allows the farmer to solve the problem early before it spreads. For an ornamental plant grower with acres of flowers for export, this is a game-changer. Field Mapping: Drones can quickly create detailed maps of the farm, helping the farmer plan planting, irrigation, and harvesting more effectively. Ghanaian Example: Imagine a large vegetable farm in the Afram Plains. Instead of hiring 10 people to spray a 20-acre pepper farm over two days, the farm manager can use one drone to do the same job in just a few hours. Hydroponics and Vertical Farming What is it? Hydroponics: A method of growing plants without soil. Plants are grown in water that is enriched with all the necessary mineral nutrients. Vertical Farming: The practice of growing crops in vertically stacked layers, often indoors in a controlled environment. It frequently uses hydroponics. How it makes work easier for Vegetable & Ornamental Growers: No Weeding: Since there is no soil, the tedious and back-breaking work of weeding is completely eliminated. Space Efficiency: You can grow many more plants in a small area. This is perfect for people in cities like Accra or Kumasi who have limited land but want to grow vegetables like lettuce, spinach, and herbs. Water Conservation: Hydroponic systems use up to 90% less water than traditional soil farming because the water is recirculated. This is excellent for areas with unreliable rainfall. Faster Growth & Higher Yields: Plants get the exact nutrients they need, so they often grow faster and produce more within a shorter time. The farmer has full control over the growing conditions. Ghanaian Example: A young entrepreneur in Osu, Accra, can set up a vertical farm in a small warehouse or even on a rooftop. They can grow high-value lettuce and basil for hotels and restaurants all year round, without worrying about land availability or the rainy season. Greenhouse Technology What is it? A greenhouse is a structure with walls and a roof made of transparent material (like plastic or glass) in which plants requiring regulated climatic conditions are grown. Modern greenhouses have automated systems. How it makes work easier for Vegetable & Ornamental Growers: Climate Control: The farmer can control the temperature, humidity, and light inside the greenhouse. This means they can grow crops like tomatoes, sweet peppers, and cucumbers even during the wrong season, fetching a higher price. Pest and Disease Protection: The enclosed structure acts as a physical barrier, preventing many pests and diseases from reaching the crops. This reduces the need for chemical spraying. Efficient Irrigation (Drip Irrigation): Most greenhouses use drip irrigation, where water is delivered slowly and directly to the base of each plant through small tubes. This prevents water wastage and ensures each plant gets exactly what it needs without the farmer having to carry watering cans. Ghanaian Example: A commercial rose farmer near Aburi uses a greenhouse to grow high-quality roses for export to Europe. The controlled environment ensures the flowers are perfect, and drip irrigation saves water and labour. Mobile Farming Applications and Digital Platforms What is it? These are software applications (apps) on smartphones that provide farmers with valuable information and services. How it makes work easier for Vegetable & Ornamental Growers: Market Access: Apps like Esoko or Farmerline can connect a vegetable farmer in the Volta Region directly to a buyer in Accra, providing information on market prices. This helps the farmer avoid being cheated by middlemen. Weather Forecasts: Farmers can get accurate, localized weather forecasts on their phones, helping them decide the best time to plant, irrigate, or apply fertilizer. Extension Advice: Instead of waiting for an extension officer to visit, farmers can use apps to get advice on controlling a new pest or disease affecting their okro or garden eggs. Some apps even allow them to upload a photo of the sick plant for a diagnosis. Equipment Services: Platforms (like the "TROTRO Tractor" concept) can connect farmers who need a tractor or other machinery with service providers nearby, making mechanization easier to access. Ghanaian Example: A group of women growing spring onions in a community garden can use their smartphones to check the current price at Agbogbloshie market before they harvest, ensuring they get a fair price for their hard work.

Guided Practice (With Solutions)

Instructions: Let's work through these questions together as a class.

Evaluation guide

• Identify other emerging technolo gies used to make growing of vegetable and
• ornamental crops easier.
• Inquiry -Based Learning: Learners in mixed -gender groups, identify other emerging
• technologies used to ease work in vegetable and ornamental cultivation ( e.g., drones that use