Decomposition of the organic matter in submerged soil is carried out by?

Related Mcqs:

1. During decomposition of organic matter, inititial decomposition is dominated by:__________?

   A. Actinomycetes
   B. Bacteria
   C. Fungi
   D. Both B & C

   Submitted by: Shafiq Rehman

2. Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:

   A. High temperature
   B. Alkaline
   C. Both a & b
   D. None of a & b

   Submitted by: Shafiq Rehman

3. Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:

   A. 72 %
   B. 58%
   C. 62 %
   D. Al of the above

   Submitted by: Shafiq Rehman

4. The indicator used for the the estimation of the organic matter or organic carbon is;_________?

   A. Mixed indicator
   B. Diphenylamine indicator 
   C. Both a and b
   D. None of the above

   Submitted by: Shafiq Rehman

5. Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?

   A. Peat soil
   B. solonchalk soil
   C. Muck soil
   D. Both a and c

   Submitted by: Shafiq Rehman

6. Walkley and blacks method of organic matter determination allows recovery of ______ ℅ organic carbon content:

   A. 44 ℅
   B. 45 ℅
   C. 33℅
   D. None of the above

   Submitted by: Shafiq Rehman

7. Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:

   A. 74 %
   B. 54 %
   C. 62.5 %
   D. 34%

   Submitted by: Shafiq Rehman

8. 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

9. Soil Organic Matter (SOM) serves not only as a reservoir of all the required plant nutrients, but it:

   A. Provides energy for the microbial
   B. Maintains the productivity of soil
   C. Gives structure to the soil
   D. All of these

   Submitted by: Shafiq Rehman

10. __________________ 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