N mineralization is effected by soil pH_______________?

Related Mcqs:

1. In Pakistan the area effected due to water erosion is about_________________?

   A. 12 million to
   B. 13.05 million lia
   C. 22 million ha
   D. 15 million lva

2. Soil water in excess of hygroscopic and capillary water which moves downward through the soil by the force of gravity is called______________?

   A. Capillary water
   B. sub-surface water
   C. Gravitational water
   D. Run off water

3. The soil has got______________?

   A. Six horizons
   B. Five horizons
   C. Seven horizons
   D. Two horizons

4. Fumigating and warming soil by covering it with black plastic is called__________________?

   A. Mulching
   B. Fumigation
   C. Soil solarization
   D. None of the above

5. Losses of soil moisture vapour form is called as_________________?

   A. Evaporation
   B. Transpiration
   C. Translocation
   D. Both A and B

6. The crops which are grown to reduce the soil erosion and natural losses by leaching is known as______________?

   A. Companion crops
   B. Cover crops
   C. Mixed crops
   D. Ratooning crops

7. The soil are contains__________________?

   A. Less oxygen as compared 10 atmosphere
   B. More carbon dioxide as compared to atmosphere
   C. Both a & b
   D. None of the above

8. Tillage is field operation which help in cutting, loosening and inverting the soil for_________________?

   A. Fertilization
   B. Irrigation
   C. Seed bed preparation
   D. Transplantation

9. EC of saline soil is equal to or greater than________________?

   A. 2
   B. 3
   C. 4
   D non of these

10. The physical condition of soil is called________?

    A. Tillage
    B. Tiller
    C. Tilth
    D. None of these

    Submitted by: Mukhtir Ali jan