A windbreak with 50% crown density is more effective than one of either 100% or of ______ density:

Related Mcqs:

1. The best windbreaks approach is 100% crown density in the low-profile shurb, rows, and _____ density in the tall rows:

   A. 50%
   B. 60%
   C. 70%
   D. 80%

2. The kind of windbreak is:

   A. Trees and shrubs best suited or preferred by the farmer how much space is available
   B. And whether the land is irrigated or rain fed.
   C. Both (a) & (b)
   D. None of these

3. After proper design and establishment of the windbreak, the farmer needs to pay particular attention to a key management needs:

   A. Grazing protection
   B. Fire protection
   C. Pruning
   D. Harvesting
   E. All of the above

4. Degree of crown density in a forest stand is:

   A. Closed
   B. Dense
   C. Thin
   D. Open
   E. All of the above

5. Which of the following plants is used as windbreak?

   A. Delonix
   B. Mangifera
   C. Eucalyptus
   D. Prosopis

6. The organic matter, generally 0.5 – 0.8% to about 75 – 100 cm depth, drops to about 0.3% at ______.

   A. Lower depths
   B. Upper depths
   C. Middle depths
   D. None of these

7. Pakistan has a total livestock population of about 100 million heads, composed primarily of ______:

   A. Goats
   B. Sheep
   C. Cattle
   D. Buffaloes
   E. All of the above

8. The influences of crown on trees is:

   A. Quality of bole or wood
   B. Volume production per unit area
   C. Control composition of species
   D. Regulate seeds and resin production
   E. All of the above

9. General characteristics of crown are:

   A. In young age crowns are usually conical in shape but as the time passes the crown shape becomes rounded
   B. Drooping forms also occur in many species e.g. Polyalthia longifolia
   C. Both (a) & (b)
   D. None of these

10. Crown includes:

    A. Palm trees
    B. Bamboo
    C. Conifers
    D. All of the above