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Transcript of Agriculture
What is Agriculture?
Agriculture is the science, art or occupation concerned with cultivating land, raising crops, and feeding, breeding and raising livestock.
Consequences of Agriculture
Agriculture produces a negative impact on global warming!
Agriculture with food provides 20% of our nations carbon dioxide
Many people involved with industrial agriculture use lots of pesticides, fertilizers, fuel and oil causing green house gases in the air
Even the land causes problems in the earth!
Takes lots of space
The same plant being planted all the time can strip the soil of important nutrients
There are many topics under the title of agriculture, such as:
Environment and Natural Resources
Mitigating Detrimental Human Impacts
Agriculture's Effects on the Shorelines
The need for Agriculture
Agriculture feeds us
provides us with nutrients
agriculture started civilization
plays a big role in economy, providing many people with jobs
premier source of national income
Erosion caused by land development
Changes in water quality and hydrology caused by fertilizers, pesticides, and run-off
Agriculture's effect on mountainsides
America's agricultural subsidies cost tax payers around fourty-four billion dollars each year.
Decreased erosion and surface run-off
DDT is a chemical that was used in the late 1800's and early 1900's
This chemical was used to help get rid of diseases and also for insect control until 1972
The chemical was canceled because it caused health effects with wildlife
Use organic products
Organic farmers nourish the living part of the soil that provides nutrients
The way the organic farmers raise the plants makes nice healthy plants that can resist disease better and no chemicals are involved
Organic livestock is raised by feeding the animals organic feed and letting them go outside
Agriculture: Past and Present
Before 1800s- "Slash and Burn" agriculture
Slash and burn agriculture is basically when farmers would have people cut down the forests, and then grow crops for a few years until all fertility was gone, and then moved on
1822- Much land abandoned, and farmers being forced into clearing "inferior" land
Inferior land, back then, was land that most people would pass over as not worth cultivating
1860- start of Civil War
The Civil War bankrupted agriculture, so much swampland was sold off by the state
1900s- rise in mechanized timber harvest
WW1 begins- Agriculture expands to meet the increased demand for food and fiber
1919- cotton sold for 35 cents a pound
1931- cotton sold for 6 cents a pound
1950- each farmer produced food for 27 other people
1970s&80s- swampland develoment
Agriculture minimally affected by government shutdown