With the reference to Indian soils consider the following statements 1 ...........

Agriculture and Rural Development (Phase-I/II) Soil and Water Conservation

With the reference to Indian soils, consider the following statements:

1. Red soils are mainly acidic and rich in phosphates and potash.

2. Laterite soils are characterised by conditions of high temperature and heavy rainfall with alternate wet and dry periods.

3. Regur soils are usually characterised by low phosphates and nitrogen.

Which of the statements given above is/are correct?

1 and 2 only

2 and 3 only

3 only

1, 2 and 3 only

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Explanation:

The black colour is due to the presence of a small proportion of titaniferous magnetite or iron and black constituents of the parent rock. Though Potash is variable (less than 0.5 per cent) but phosphates, nitrogen and humus are low. Red soils have their main parent rocks as crystalline and metamorphic rocks like acid granites, gneisses and quartzites.They are acidic mainly due to the nature of the parent rocks. The alkali content is fair. They are poor in lime, magnesia,phosphates, nitrogen and humus.They are fairly rich in potash and potassium. Laterite soils are mostly the end products of weathering. They are formed under conditions ofhigh temperature and heavy rainfall with alternate wet and dry periods.