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...