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.