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Zorluk: OrtaSoils, Natural Vegetation, and Agriculture in India

Consider the following statements regarding Peaty and Marshy Soils (locally known as Kari in parts of Kerala) in India:

1. They develop in humid regions characterized by heavy rainfall and dense vegetation growth, leading to a high accumulation of organic matter.
2. These soils are predominantly alkaline in nature and are completely free of soluble mineral salts.
3. They are characteristically heavy, dark in color, and strongly acidic.

Which of the statements given above is/are correct?

  1. 1 and 3 onlyCevap
  2. B
    1 and 2 only
  3. C
    2 and 3 only
  4. D
    1, 2 and 3

Cevap

The correct option is the one stating that statements 1 and 3 only are correct.
Peaty and marshy soils form in humid coastal regions (such as Kottayam and Alappuzha districts of Kerala, Sundarbans of West Bengal, and coastal Odisha) under conditions of heavy rainfall and high water table. They are heavy, dark in color, highly acidic, and rich in organic matter (40–50%). Statement 2 incorrectly characterizes them as alkaline and free of soluble salts.

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1
Evaluate Statement 1 regarding formation and organic content.
Peaty soils originate in areas with high rainfall, high humidity, and dense vegetative cover (such as coastal Kerala, Sundarbans, and coastal Odisha). Organic matter accumulation reaches up to 40–50%. Statement 1 is correct.
Verifies the pedogenic climate and organic composition.
2
Evaluate Statement 2 regarding soil pH and salinity.
Due to massive humification and accumulation of organic acids, peaty soils are strongly acidic (pH often below 5.0) and typically contain considerable amounts of soluble salts and ferrous iron. Statement 2 is incorrect.
Identifies erroneous claims regarding soil chemistry and pH.
3
Evaluate Statement 3 regarding texture and color.
Peaty soils are heavy, dark/black in appearance, and highly acidic. Statement 3 is correct.
Confirms physical attributes of peaty soils.

Anahtar Kavram

Pedological and chemical characteristics of Peaty and Marshy Soils in India
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Konular

Soils, Natural Vegetation, and Agriculture in India

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