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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Contour bunding is a method of soil conservation used in

    Question: Contour bunding is a method of soil conservation used in

    Options:

    desert margins, liable to strong wind action
    low flat plains, close to stream courses, liable to flooding
    scrublands, liable to spread of weed growth
    None of the above

    🔑 Key Points
    Soil conservation is the prevention of soil loss from erosion or the prevention of decreased fertility caused by acidification, over usage, salinization, or other chemical soil contamination.

    🌱 Causes of Soil Degradation
    → Soil pollution
    → Soil Erosion
    → Overgrazing
    → Extraction of minerals at a repeated stage
    → Drought

    🌿 Soil Conservation Methods
    → Afforestation
    → Checking Overgrazing
    → Constructing Dams
    → Changing Agricultural Practices
    → Crop Rotation
    → Strip Cropping
    → Use of Early Maturing Varieties
    → Contour Ploughing
    → Terracing and Contour Bunding
    → Plowing the Land in right direction

    📝 Term
    → Erosion: The action of surface processes that removes soil, rock, or dissolved material from one location on the earth's crust and then transports it to another location.
    → Soil Acidification: The buildup of hydrogen cations reducing the soil pH.
    → Salinization: A build-up of salts in the soil, eventually to toxic levels for plants.

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