Conservation agriculture improves the water use efficiency of dryland systems. It has components:

Related Mcqs:

1. 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

2. According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?

   A. Drought stress
   B. Accelerated erosion & salinization
   C. Depletion of soil fertility and SOM
   D. All of the above

   Submitted by: Shafiq Rehman

3. Principles of soil conservation does not include:

   A. Minimize run-off  & store surplus water
   B. Use non-arable lands effectively
   C. Leave barren lands uncultivable to support desrtification degradation
   D. Construction of mini dams & ponds to store water for live stock & other porposes

   Submitted by: Shafiq Rehman

4. Father of soil conservation and Father of Pedology respectively?

   A. Winogradsky & R. Morphy
   B. Winogradsky & Dokuchaev
   C. Bennett & Dokuchaev
   D. both A & B

   Submitted by: Mir Mehrbiyar

5. Soil conservation is performed by:_________?

   A. Cutting trees
   B. Excessive grazing
   C. By plantation
   D. By heavy irrigation

   Submitted by: Shafiq Rehman

6. Almost one third of the land area through out the world is affected by land degradation. Pakistan’s agriculture sector though facilitates employment to >65% but is facing challenges from:

   A. Erosion
   B. Salinity
   C. Waterlogging
   D. All of the above

   Submitted by: Shafiq-ur-Rehman

7. Soil is a variable mixture of Major components:

   A. Solids
   B. Liquids
   C. Gases
   D. All of the above

   Submitted by: Shafiq Rehman

8. __________________ 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

9. Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:

   A. Capillary water
   B. Hygroscopic water
   C. Gravitational water
   D. None of the above

   Submitted by: Shafiq Rehman

10. 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