What happens when an saline-alkaline soil is reached with water:

Related Mcqs:

1. 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

2. 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

3. A soil is categorized as saline when EC of saturation extract is______________________?

   A. >4dsm-1
   B. 0.4dsm-1
   D. 0.4 4.0 dsm-1

4. The suitable species for reclamation of saline & sodic soil is:__________?

   A. Casuarina equisetifolia
   B. Albizia lebbeck
   C. Both A & B
   D. None of the above

   Submitted by: Shafiq Rehman

5. In alkaline soil which form of phosphorus uptake by plants?

   A. Primary orthophosphate
   B. Secondary orthophosphate
   C. both
   D. None of these

   Submitted by: gmsyed

6. 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

7. 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

8. 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:

   A. Deep Tillage
   B. Conservation Tillage
   C. Both a & b
   D. None of these

   Submitted by: Shafiq Rehman

9. Which compound is mostly used in Pakistan for the reclamation of saline-sodic & sodic soils_________________?

   A. Apatite
   B. Calcite
   C. Dolomite
   D. Gypsum

10. Vegetation found in saline soils is termed by _________?

    A. Halophyte
    B. Hetrophyics
    C. Viticphyics
    D. Hortiphyics

    Submitted by: Zakir Memon