This lecture will help you understand: Soils and agriculture


Storms brought dust from the U.S. Great Plains all the way to New York and Washington, and wrecked many lives



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Storms brought dust from the U.S. Great Plains all the way to New York and Washington, and wrecked many lives.

Soil conservation

the U.S. Soil Conservation Act of 1935 and

the Soil Conservation Service (SCS) were
created.

  • SCS: local agents in conservation districts worked with farmers to disseminate scientific knowledge and help them conserve their soil.

Soil conservation

  • Many nations followed the U.S. lead:

  • Today local soil conservation agents help farmers in many places in the world.

  • Brazil’s no-till effort is based on local associations.


Preventing soil degradation

Several farming strategies to prevent soil degradation:

• Crop rotation

Contour farming



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