14 terms

GCSE Factors affecting food supplies

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Physical factors
Natural things such as climate, soils, relief, that affect food supply
Human Factors
Things such as politics, technology and government decisions that influence food supplies
Food supplies
a stock of food supplied or available for use
Temperature
Is critical for plant growth as all crops have a minimum temperature in which they will grow and a minimum growing season. In Britain, wheat and Barley will only grow when the average temperature is above 6°C.
Growing season
The average number of days between the last frost of spring and the first frost of fall
Precipitation
Delivers water for plants - few crops can grow where there is less than 250mm of rainfall a year and grasses will dominate above that figure. Trees and fruits require greater amounts.
Technology
Has been used for centuries to make farming easier and more productive. HICs can afford to invest in combined harvesters, irrigations systems for watering and road networks to improve communications.
Irrigation
The process of supplying water to areas of land to make them suitable for growing crops.
Green Revolution
has transformed agriculture in certain parts of the world and is tied in with technological innovation.
Pests and diseases
affect a crop and reduce the amount a farmer gets to eat or sell at the end of the harvest. Mice and rats can eat crops, as can locusts and slugs.
Insecticides and pesticides
Chemicals used to kill insects and pests
Water stress
Occurs when the demand for water exceeds the available amount during a certain period or when poor quality restricts its use. Impacts plant growth
Conflict and war
Impact food production as many of the farm workers leave their land to join the fighting, many are forced to flee the areas and become refugees and Food can become a weapon.
Government policy
Government rules and decisions can affect food supply, in the European Union policies such as CAP caused over production of items such as butter and grain
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