3.3: Agriculture Textbook page 57-58-59 LO: Students will be able to 1. discuss different types of agriculture Key Vocabulary • Arable farming • Pastoral farming • Mixed farming • Extensive production • Intensive production Breakout Rooms-15 minutes maximum Must focus of self-assessment questions as well Rooms Topics 1 Agriculture , its importance and types • Subsistence vs commercial • Arable vs Pastoral 2 Extensive and Intensive production 3 Increasing agricultural yields 4 Solution to world's hunger Assessment Question- Page 58 Read page 59-70: Techniques for improving crop yield This Photo by Unknown Author is licensed under CC BY Topic 3.4 - Techniques for increasing agricultural yields Textbook Page 59-69 LO: By the end of this topic, you should be able to: • Describe techniques used to increase agricultural yields: Techniqu es for increasin g agricultur al yields • Crop rotation • fertilisers • irrigation • insect control (insecticide and biological control), weed control (herbicide), fungi control (fungicide) • mechanisation • selective breeding of animals and plants • genetically modified organisms • controlled environments: greenhouses and hydroponics Crop Rotation • Advantages and Disadvantages This Photo by Unknown Author is licensed under CC BY-NC-ND Crop Rotation: How each crop benefits other crop This is a plot divided into four rotations. 1. Legumes: Plants which contain nitrogen fixing bacteria in their roots to produce a source of nitrates. (Plants which are able to produce their own fertilizers such as plants like pea and bean) 2. Leafy Crops: They are grown for their leaves and require a lot of nitrogen fertilizer which is left in the soil by the legume roots after their harvest. 3. Fallow: The Land is left to rest. 4. Root Crops: Plants with deep roots helps in breaking up the soil. A lot of soil cultivation is needed to harvest the roots. Legumes like well cultivated soils and so benefit from being grown in a plot the season right after root crops. Fertilizers Advantages and Disadvantage This Photo by Unknown Author is licensed under CC BY-NC-ND This Photo by Unknown Author is licensed under CC BY-SA Irrigation • Advantages and Disadvantage This Photo by Unknown Author is licensed under CC BY-SA-NC Recap •Describe the process of soil formation. •Differentiate between different soil types. •Which soil is best for farming and why? •Self-assessment question 3.4 page no 58 •What is crop rotation technique? Give examples to explain •To increase crop yield, weeds need to be controlled. Justify •How are crops grown in controlled environments like greenhouses and hydroponics. Control of Competing organism Go to www.menti.com and use the code 57 89 85 0 Controlling pests and diseases • Pesticides • Insecticides • Pathogens • Fungicides Efficiency gains through Mechanisms This Photo by Unknown Author is licensed under CC BY-SA Selective Breeding Controlling the crop environmen t • Growing blueprint: ideal conditions needed by a plant for maximum growth. • Hydroponics: Growing plants without soil with the nutrients the plant needs dissolve in water. This Photo by Unknown Author is licensed under CC BY-SA Plenaryhttps://www.menti.com/m6b96ki6hd H.W: Revise all the work done , complete all the work assigned in class notebook.