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With reference to agricultural soils, consider the following statements :

1. A high content of organic matter in soil drastically reduces its water holding capacity.
2. Soil does not play any role in the sulphur cycle.
3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.

Which of the statements given above is/are correct ?

(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3



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Statement 1 is incorrect because a high content of organic matter in soil generally improves its water holding capacity by increasing its ability to retain moisture.

Statement 2 is incorrect because soil plays a crucial role in the sulphur cycle. It acts as a medium for the storage, transformation, and cycling of sulfur compounds, which are essential nutrients for plants.

Statement 3 is correct. Excessive and improper irrigation practices can lead to the salinization of agricultural lands. When water evaporates from the soil surface, it leaves behind dissolved salts, which can accumulate over time and negatively affect soil fertility and crop productivity.


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