Soil salinity is measured by:

Related Mcqs:

1. Removal of top soil by soil erosion result in the loss of soil:

   A. Nitrites
   B. Nitrates
   C. Nitrogen
   D. Nitric and nitrous acids

2. Fertility of soil is measured by its ability to:

   A. Hold organic matter
   B. Hold water
   C. Support life
   D. Retain nutrients

3. In water logged soil plants cannot grow properly because the soil is:

   A. Physiologically wet
   B. Physiologically dry
   C. Physically dry
   D. None of the above

4. When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of water. The PWP of this soil is:

   A. 4.50%
   B. 9%
   C. 8.25%
   D. 16.50%

5. The ration of volume of pores in the soil to the total soil volume is referred to as:

   A. Pore frequency ratio
   B. Pore density ration
   C. Pore abundance ratio
   D. Pore space ratio

6. When a soil has been thoroughly wetted and then allowed to drain until capillary movement of the water has stopped, the water content of the soil will give an estimate of it’s:

   A. Gravitational water
   B. Capillary water
   C. Field capacity
   D. Storage capacity

7. Measurement of Diameter several instruments are used for measuring the diameters of trees depending on such circumstances as the position and condition of the part of the tree that is to be measured, the degree of accuracy required, and the portability, etc., of the instrument:

   A. The Rule
   B. The caliper
   C. The Diameter Tape
   D. Dendrometers
   E. All of the above

8. The growth of trees can be measured in the form of:

   A. Diameter
   B. Height
   C. Volume either of standing timber
   D. All of the above

9. The Tarbela catchment erosion has been measured at the rate of _____ meter:

   A. 2 to 4 kg/sq
   B. 3 to 5 kg/sq
   C. 4 to 6 kg/sq
   D. None of these

10. The slowest growth rate has been reported from cycad, known as Dion edule from Mexico measured in ________

    A. 1980
    B. 1981
    C. 1982
    D. 1983