Soil acidification can occur due to 1 Heavy rainfall 2 ...........

Geography World - Soil and Vegetation

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Soil acidification can occur due to

1. Heavy rainfall

2. Application of fertilizer

3. Shifting cultivation

Select the correct answer using the codes given below.

1 and 2 only

1 and 3 only

2 and 3 only

1, 2 and 3

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Explanation:

1 and 2 only. Soil acidification is a natural process accelerated by agriculture. Soil acidifies because the concentration of hydrogen ions in the soil increases. The main cause of soil acidification is inefficient use of nitrogen fertilizer. Heavy rainfall may also lead to soil acidification as the bases in soils are washed away. Shifting cultivation does not lead to soil acidification, although it leads to generating infertile soil.