This lecture will help you understand: Soils and agriculture

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This lecture will help you understand:

Central Case: No-Till Agriculture in Brazil

  • Southern Brazil’s farmers were suffering falling yields, erosion, and pollution from agrichemicals.

  • They turned to no-till farming, which bypasses plowing.

  • Erosion was reduced, soils were enhanced, and yields rose greatly. No-till methods are spreading worldwide.

Agriculture today

  • We have converted 38% of Earth’s surface for agriculture, the practice of cultivating soil, producing crops, and raising livestock for human use and consumption.

  • Croplands (for growing plant crops) and rangelands (for grazing animal livestock) depend on healthy soil.

World soil conditions

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