Case Study

Technologies

Invention of steel plow

1837

Invention of steam engine tractor

1868

Development of tractors

1940

Land Use

Subsistence farming

1800

Monoculture

1840

Reintroduction of crop rotation

1900

Rapid development of industrial agriculture

1943

Fertilizers and Pesticides

Introduction of Peruvian guano

1843

First chemical fertilizer is developed

1849

Guano no longer in use

1875

Introduction of DDT

1943

Laws and Regulations

Organic Act of 1897

1897

Ban of DDT

1972

Clean Water Act

1972

Farm Bill of 1985

1985

Nonpoint Source Management Program

1987

Important Events

Cuyahoga River Fire

1969

First TMDL Program

2000

Second TMDL Program

2010