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...