UPSC General Studies Sample Paper General Studies Sample Paper-10

  • question_answer
    Consider the following statements regarding podzols.
    1. They are typical soils of boreal forests.
    2. These are poor soils for agriculture.
    3. Podzols with no E horizon are black podzolic soils.
    Which of the statements) given above is/are correct?

    A)  Only 1             

    B)  1 and 2

    C)  2 and 3

    D)  All of these

    Correct Answer: B

    Solution :

    [b] In soil science, podzote (also known as podsols or spodosols) are the typical soils of coniferous, or boreal forests. They are also the typical soils of Eucalypt forests and heath lands in Southern Australia. Most podsols are poor soils for agriculture. Some of them are sandy and excessively drained. Others have shallow rooting zones and poor drainage due to sub-soil cementation. Well-drained loamy types can be very productive for crops if lime and fertiliser are used. In some podzols, the E horizon is absent, either masked by biological activity or obliterated by disturbance. Podzols with little or no E horizon development are often classified as brown podzolic soils.

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