The soil samples are dried at _______________, for gravimetric soil analysis?

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 samples are collected:

   A. From the field with immediate application of fertilizer or amendments
   B. Field with upper white layer of salts
   C. Boundaries of the field
   D. None of these

   Submitted by: Shafiq Rehman

3. Gravimetric water is present in______________________?

   A. Micro pores
   B. Macro pores
   C. Meso pores
   D. None of the above

4. Gravimetric water is present in__________________?

   A. Microspores
   B. Macrospores
   C. Mesopores
   D. Nanopores

5. 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

6. A soil is classified as sodic soil when______________________?

   A. EC is 8.5
   C. SAR is >13
   D. All the above

7. Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?

   A. Agregation of soil particles
   B. Cementing of soil particles
   C. Dispersion of soil particles
   D. All the above

8. The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies are_________________: and some micronutrients including Mo?

   A. N, P, K
   B. Ca, Mg, S
   C. both A & B
   D. The above statement is wrong

   Submitted by: Shafiq Rehman

9. 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

10. The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:

    A. Physical
    B. chemical
    C. Biological
    D. both A & B

    Submitted by: Shafiq Rehman