The depleted soils can be enriched by the addition of:

Related Mcqs:

1. Nitrification takes place only in well aerated soils because the bacteria responsible for it are:

   A. Aerobic
   B. Anaerobic
   C. Parasites
   D. None of these

2. Plants growing in oxygen deficient soils possess:

   A. No roots
   B. Longer roots system
   C. Aerial roots system
   D. Shallow root system

3. In coarse textured soils:

   A. There is no soil air
   B. Water retaining capacity is high
   C. Pore space is narrow
   D. Pore frequency is low

4. Soils transported by air is called:

   A. Eolian
   B. Aerial
   C. Residual
   D. Colluvial

5. Soils having sub-optimum concentration of nutrient solution are called:

   A. Hypotrophic
   B. Eutrophic
   C. Heterotrophic
   D. Oligotrophic

6. Soils transported by water are called:

   A. Alluvial
   B. Colluvial
   C. Residual
   D. Eolian

7. Proximity of water level at low depths of soils results in development of:

   A. No roots at all
   B. Curved roots
   C. Long roots
   D. Shallow roots

8. The soils that are fully laden with water i.e., water logged, are known are:

   A. Physically dry soils
   B. Physiologically dry soils
   C. Alkaline soils
   D. Acidic soils

9. Eroded soils are:

   A. Rich in plant nutrients
   B. Unaltered in plant nutrients
   C. Devoid of plant nutrients
   D. All of these

10. Soils are classified on the basis of physical properties which determine:

    A. Productive capacity
    B. Supporting power
    C. Monitor storage capacity
    D. Nutrients availability
    E. All of the above