Food Supply Flashcards
What is the definition of agriculture?
The production of food, animal feed and other goods by the growing of crops and rearing of animals
What is the definition of subsidence farming?
Where the land will only produce enough for the farmer and their family to live on with very little, if any, left over to sell
GM crops are…
Crops that have genes from other plant/animal species inserted in them to produce ‘better versions’
What are the differences in diet for MEDCs and LEDCs?
- MEDCs have a larger amount of sugar
- LEDCs have a larger amount of cereals
- MEDCs have a greater amount of meat
- LEDCs have more pulses
What is food aid?
A way of influencing recipient countries whilst at the same time ridding a developed country of surplus foodstuffs
What is trade? (geopolitics)
Global trade controlled by MEDCs- they protect their farmers. Agriculture provides a third of export earnings for more than 50 LEDCs
What are TNCs and what do they do?
Transnational Corporations have the finances to buy land in LEDCs to be used for the production of cash crops, impacting adversely on local farmers
What are the strategies to increase production?
- The Green Revolution
- Genetic modification
- Irrigation & integrated pest management
- Land colonisation
- Land Reform
- Commercialisation
- Appropriate/intermediate technology solutions
What is The Green Revolution?
Movement that started in 1960s resulting in increased yields in developing countries using the High Yield Varieties, fertilisers, pesticides and irrigation. It increased agriculture production worldwide- particularly in the developing world
What were the advantages of the Green Revolution?
- New strains of rice
- Dwarf varieties grown closer together
- HYVs withstand crop diseases
- Shorter growing season meant extra crops could be grown
- New industry built on providing fertilisers for HYVs
What were the disadvantages of the Green Revolution?
- Increased use of chemicals- damaging to environment
- Overuse of irrigation- salinisation of the soil
- Unemployment- rural to urban migration
- HYVs need more weed control and some strains are more susceptible to pests and disease
- Biodiversity lost
What is genetic modification?
The process of taking DNA from one species and adding it to the DNA of another species
What are the arguments for genetic modification?
- Increase yield
- Include extra vitamins/nutrients
- Remove allergic reactions
- Reduces dependence on chemicals
What are the arguments against genetic modification?
- Cross contamination of crops in adjacent fields
- Destruction of wildlife from herbicides
- Long term impacts on health are unknown
- Development of ‘superbugs’ and ‘superweeds’
What is irrigation?
The artificial application of water to soil
What is Integrated Pest Management? (IPM)
A process combining various methods including natural predators, mechanical trapping devices and pheromones to disrupt mating
What has been the result of IPM in Argentina?
The eradication of the Mediterranean fruit fly using the sterile insect technique (sterlising males so no offspring)
What is land colonisation?
Using new areas for agriculture that were not previously used to provide land for subsistence farmers/to grow cash crops
What is land reform?
Redistribution of land and transferring land to state ownership
What does land reform eradicate?
Food insecurity and rural poverty
What is the land reform programme in Kerala?
Families are given 8 hectares of land- a socialist model for boosting local production
What is commercialisation?
Supermarkets are sourcing food products directly from developing countries