Consider the following practices 1 Providing ...........

Geography World - Soil and Vegetation

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Consider the following practices:

1. Providing outlets for lands to drain out excess water and lower.

2. Practicing crop rotation

3. Liberal application of gypsum to convert the alkalies into soluble compounds.

4. Use of Organic residues in agricultural fields

Which of the above practice/practices can reduce the salinization of soils?

1 and 3 only

2 only

1,3 and 4 only

1, 2, 3 and 4

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Explanation:

All the mentioned practices can reduce salinization of soils. Soil salinization occurs when water-soluble salts accumulate in the soil to a level that impacts on agricultural production, environmental health, and economics. Salinity affects the metabolism of soil organisms and reduces soil productivity, gradually it destroys all vegetation and other organisms living in the soil, consequently transforming fertile and productive land into barren and desertified lands.

The main reasons behind salinization of soils are:

1. Naturally induced saline soils.

2. Artificially induced salinization, such as irrigation

3. Sea-level rise and surface seawater seepage and sea water infiltration into the groundwatersc