Thinnings is:

Related Mcqs:

1. The major types of methods of thinnings is:

   A. Low thinning or ordinary thinning
   B. Crown thinnings or high thinning
   C. Selection thinning
   D. Mechanical thinning
   E. All of the above

2. Mechanical thinning is:

   A. The trees to be cut or retained are chosen on the basis of a predetermined spacing
   B. Or pattern with little or no regard for their position in the crown canopy
   C. Both (a) & (b)
   D. None of these

3. The classes of trees are removed in selection thinning:

   A. They are restricting the development of their neighbours on all sides
   B. They are less valuable than their neighbours
   C. They are of no special importance with regard to desirable species mixture
   D. All of the above

4. Diseased trees (k) including those which are infected with parasites to such an extent that their growth is seriously affected or that they are a danger to their neighbours:

   A. Dominant
   B. Dominated and suppressed
   C. Both (a) & (b)
   D. None of these

5. Dominant tree: Including all trees which form the upper most leaf canopy and have their leading shoots free. These are usually sub-divided into:

   A. Predominant trees comprising all the largest trees which determine the general top level of the canopy
   B. Codominant trees which fall short of this, averaging about 5/6th of the height of predominant
   C. Trees with forked leader and similar defects
   D. All of the above

6. The injuries are generally caused by:

   A. Unnecessary haste
   B. Use of improper tools
   C. Pruning during the growing season when the bark is loose
   D. All of the above

7. Effect of the tree in pruning is:

   A. The contrary, properly conducted pruning is not harmful to the tree
   B. Careless pruning can, however, cause injury to the bole, leaving wounds extending through the bark into the cambium and even to the wood
   C. Both (a) & (b)
   D. None of these

8. Weeding is meant for:

   A. As a tending operation done in a seedling crop involving the removal
   B. Cutting back of any sort of weed growth, even woody
   C. That is interfering with then growth of the corp.
   D. It merges with cleaning as the seedling grow into saplings
   E. All of the above

9. The major types of Mulches is / are:

   A. Artificial mulches: Paper and plastic mulches
   B. Natural mulches
   C. Inorganic; soil mulch and stone mulch
   D. Organic; branches, twigs and leaves, leaf litter, grass weed
   E. All of the above

10. Beating up (Replacement) covers:

    A. Hundred percent successful stocking from the first sowing
    B. Or planting out is rarely attained except with the more elaborate methods
    C. The causalities have to be replaced to give good results
    D. All of the above