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

Related Mcqs:

1. 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

2. A soil is classified as sodic soil when______________________?

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

3. The deficient macronutrient in the sodic soils is:_______?

   A. Mg
   B. Ca
   C. Mo
   D. Cu

   Submitted by: Shafiq Rehman

4. The most suitable species for reclamation of sandy soils is:_________?

   A. Casuarina equiselifolia
   B. Acacia spp
   C. Azadirachta indica
   D. All of the above

   Submitted by: Shafiq Rehman

5. 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

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

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

   Submitted by: Zakir Memon

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

   A. pH decrease, Ec increase
   B. pH & Ec both increase
   C. pH increase & Ec decrease
   D. None of these

   Submitted by: Mir Mehrbiyar

8. Cyclic salts are mostly of ______________________?

   A. SO4
   B. HCO₃
   C. Cl^–
   D. None of the above

9. A compound toxic to crop formed by the thermal decomposition of urea is_________________?

   A. Uric acid
   B. Biurct (NH2CONH CONH2 H2O)
   C. Diuret
   D. Both b & c

10. Most abundant organic compound in nature?

    A. Cellulose
    B. Hemicellulose
    C. Lignin
    D. All of these

    Submitted by: Shafiq Rehman