Strategies to manage food supply Flashcards
What is irigation?
Artificially watering crops using sprinklers
What is appropriate technology?
The change of local farming methods to increase the production of food
What is the green revolution?
The use of technology like fertilizers, and pesticides to increase crop yield
What is aeroponics?
Grows crops using mist to add nutrients rather than growing crops in soil
What is hydroponics?
Grows crops using water filled with nutrients rather than growing crops in soil
What is biotechnology?
Genetically modifying crops to make them more resistant to diseases and droughts, to make them grow faster or to produce more nutrients.
What is the blue revolution?
Focuses on increasing the production of fish both in land and at sea
Advantages of irrigation
- countries with little rainfall can still grow crops
- saves money and time
- can double food production even when there is drought
Advantages of appropriate technology
- everyone of any ability can use this
- an easier way for agriculture to develop
- provides jobs for people which anyone can have
Advantages of the new green revolution
- doubled rice production in the 1960s
- helps areas with extreme floods and droughts, impacts of global warming
- helps the poorest areas of the world
Advantages of aeroponics
- crops can be produced without soil
- less resources needed than usual farming techniques
- creates job opportunities
Advantages of hydroponics
- crops can be produced without soil
Advantages - they grow quicker in he nutrient rich water - creates job opportunities
- uses less water and cannot be affected by diseases from soil
Advantages of biotechnology
- improves crop yield
- helped to increase incomes and creates job opportunities
- easier and takes less time for the crops to grow
- food security has been increased across the world
Advantages of the blue revolution
- increases the production of fish
- in india, fishing is one of the biggest industries
Disadvantages of appropriate technology
- it is quite new so we don’t know whether it is worth the time
- may not make a difference on large scale
- it only really fixes small-scale problems
Disadvantages of the green revolution
- soil erosion from the repetitive production of one crop
- soil pollution from chemicals used
- the crops needed a lot of expensive fertilizers so farmers have to borrow money
- led to a rise in suicide rates in India in the late 1960s as they were badly in debt
Disadvantages of irrigation
- decreased water quality
- water pollution from chemicals used
- makes water shortages worse
Disadvantages of aeroponics
- high level of monitoring and maintaining needed
- there is also high initial costs for this technique
- needs electric to work so power cuts can kill the plants
- they can be very noisy especially in inclosed environments
Disadvantages of hydroponics
- high level of monitoring and maintaining needed
- there is also high initial costs for this technique
- needs electricity to work so power cuts can kill the plants
- the plants can get diseases from the water they are grown in
- problems such as extreme temperature and diseases affect the plant quicker
Disadvantages of biotechnology
- has been known to cause cancer in some cases
- can also causes other viruses
- can be taken up by other cells and affect the human DNA
- can be lethal and are hard to notice as they are microscopic
Disadvantages of the blue revolution
- diseases can wipe up all fish and species in the area
- damage to coastlines
Give an example of where hydroponics systems are used
Thanet Earth in Kent
Give an example of where aeroponics systems are used
Thanet Earth in Kent
Give an example of where appropriate technology is used
Areas of Asia and Africa have introduced the ‘Full Belly project’
