Please enable JavaScript.
Coggle requires JavaScript to display documents.
overcoming food shortage - Coggle Diagram
overcoming food shortage
technology
farming technology
Description:
HYVs, chemical fertilisers and pesticides.
enables food to be grown in places previously considered to be unsuitable
Limitations:
Many farming technologies are too expensive and unaffordable for many farmers( especially in LDCs)
such technologies may result in environmental problems.
e.g irrigation may result in problems such as waterlogging and salinisation.
Explanation:
drier or unsuitable land coverted to be suitable for farming as water is channeled to these land. More land to farm, More crops to grow.
More nutrients in soil. Crops grow healthier as nutrients are replenished so that farming can continue.
biotechnology
Description:
the science of modifying living organisms such as plants and animals. generally known as genetic modification
examples of such plants are the drought-resistant plants which are tolerant of low rainfall conditions
Success:
Genetically modified crops have a higher yield than not modified crops. helps farmers to earn more income and enable countries to be more self-sufficient.
Limitations:
genetically modified crops are mostly common in large scale commercial farms in developed countries
for small farmers in LDCs, those genetically modified seeds are unaffordable.
Genetically modified food has lower demand and hence smaller production as many consumers are wary of the health risk that come with it
storage
strategies
refrigerated warehouse
success
keep food fresh for a longer time. Hence, there will be more food available that can be distributed to more people or further locations.
-
silos
an airtight structure for storing crops. So that there will not be any contamination or pest infestation. crop yield would be higher and there will be more food availbale for people
-
Limitations
silos may be unaffordable for farmers who are poor
fungus can develop when grains have not been dried before being stored in silos
agricultural
Description:
there are strategies such as multiple cropping and water and soil conversation to make farming more sustainable
This increases the efficiency of harvest methods and also maximises the use of farmland on a global scale
multiple cropping
Strength:
some plants repel pests
leguminous provide nutrients for non leguminous plants
increase nutrients (natural in soil)
increases food variation yield
Nutrients in soil depletes slower
less dependence on one crop
increases production without needing more land
higher economic returns
increases diveristy
withstand extreme weather
Multiple cropping and crop rotation:
planting of different types of crops in one farmland
crop rotation-diiff types of crops for different seasons on the same farmland
-
-
-
social
support local farmers
Strengths:
by purchasing locally produced food
help diversify the sources of food supply
keeps local farmers in business by ensuring demand for produce
-
-
political
Description:
national strategies: implemented within a country, may involve the whole country or selected parts of it
national strategies
strengths:
amount of food produced is regulated to ensure that there is sufficient food supply and to ensure food is affordable.
Singapore: local farms produce up to 8% of vegetables, 8% of fish and 26% of eggs consumed in singapore.
reduce singapore's reliance on food imports.
Malaysia: nearly a million acres of jungle has beeen transformed into farms as a result of the scheme.
Limitations:
Singapore: competition from cheaper food imports as most consumers still choose to buy the cheaper food.
shortage of trained workers for high tech farming.
high cost of setting up high tech farms>higher food prices
Malaysia: food security of the country may be threatened as cash crops such as oil palms are favoured over foods with higher yield.
-