Geography soils notes

GEOGRAPHY :-

An oft-tested topic in General Awareness and General Knowledge is Geography. And soil is the bedrock of geography. The soil in an area is an indicator of the climate of that region, not to mention the history and formation of that region. It is a factor that influences the vegetation, wildlife, and human culture in that region.

Important points to remember

Soils and types of soils

1. Study of soils is called Pedology .

2. A mixed organic matter with minerals,gases liquid organisms which is with silica matter is called soil .

3. The other name for soil is Skin of the earth .

4. World soil day will observed on 5th December .

5. Generally soil will contain 45% minerals,5% organic matter,25% of water and 25% of air in it .

6. Basing on the physical properties and also chemical nature soils are divided into 6 types .

7. They are 1. Alluvial soil.   2. Black soil.   

3. Red soil. 4. Laterite soil. 5. Mountain soil.    6. Desert soil 

8. Alluvial soils are found near flood plain , coastal regions and river valleys .

9. Alluvial soil is the most productive soil for cultivation of rice , wheat , sugarcane, jute .

10. Black soil - These are formed by distraction of igneous rocks .

11. Black soil - Clayey nature,ideal for growing cotton .

12. Formed by distraction of metamorphic, crystalline rocks = Red soil .

13.Red soil - Iron oxide is more prevalent .

14. Red soil - Suitable for millets .

15. Laterite soil formed by the distraction of shallow minerals .

16. Laterite soil - Suitable for tea, coffee plantations .

17. Mountain soils - present in the slope of the mountains .

18. Mountain soil - Suitable for horticulture .

19. Desert soils - generally they are more porus, less fertile and more saline .

20.Desert soil - Not suitable for agriculture .

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