Any tillage and planting system that maintains at least 30% of the soil surface covered by residue after planting for the purpose of reducing soil erosion by water:

Related Mcqs:

1. _________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.

   A. Rain splash rill erosion
   B. Stream bank erosion
   C. Sheet erosion
   D. Gully erosion

   Submitted by: Shafiq Rehman

2. __________________ systems play a crucial role in increasing soil organic C storage and reducing net emissions of greenhouse gases in addition to soil erosion control:

   A. Engineering
   B. Agroforestry 
   C. Cultivating
   D. All of the above

   Submitted by: Shafiq Rehman

3. Soil additive which stabilizes the soil, improves resistance to erosion, increases to permeability to air & water, improves texture, eases cultivation or otherwise improves soil quality:

   A. Soil amendment
   B. Soil conditioner
   C. Both a & b
   D. None of the above

   Submitted by: Shafiq Rehman

4. Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:

   A. Mull
   B. Mulch
   C. Mycorrhizae
   D. Muck

   Submitted by: Shafiq Rehman

5. Small rivulets or finger like channels formed on the surface of earth by action of water, these channels are of small depth & can be leveled by tillage operations is:

   A. Gully erosion
   B. Sheet erosio.
   C. Stream bank erosion
   D. None of these

   Submitted by: Shafiq Rehman

6. Soil erosion is __________ of soil from one place ti another place by natural agencies (wind & water):

   A. Detachement of soil
   B. Transportation
   C. both A & B
   D. None of these

   Submitted by: Shafiq Rehman

7. Erosion permitting and erosion resisting crops grow alternatively at right angle to the slope of the land is called as:_________?

   A. Linear planting
   B. Strip planting
   C. Cover planting
   D. All of the above

   Submitted by: Shafiq Rehman

8. Which is the correct sequence of soil erosion by water:

   A. Rill-Sheet-Gully
   B. Gully-Sheet-Rill
   C. Sheet-Rill-Gully
   D. None of these

   Submitted by: Shafiq Rehman

9. Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:

   A. Acid rain
   B. Neutral rain
   C. Both A & B
   D. None of the above

   Submitted by: Shafiq Rehman

10. Shallow channels that can be readily corrected by routine tillage operations is called:

    A. Permanent gullies
    B. Ephemeral gullies 
    C. Both A & B
    D. None of these

    Submitted by: Shafiq Rehman