A.Choice of species
B.Choice of stand and site
C.Growth rate, size and age of tree to be pruned
D.Number and characteristics of tree to be pruned
E.All of the above
A.Trees are raised with the preliminary object of helping a less hardy species
B.They are usually removed at an early stage as soon as they have served this purpose
C.Both (a) & (b)
D.None of these
A.As a tending operation done in the sapling crop, particularly just before
B.With the first thinning, involving the removal
C.Cutting back of all inferior growth, climbers
D.All of the above
A.Bent over
B.Badly leaning trees usually of the whip type
C.Both (a) & (b)
D.None of these
A.For continuous healthy development
B.A tree crop requires to be protected from pests and diseases
C.The individual trees must have adequate room to grow
D.If any infected trees are present
E.All of the above
A.Unnecessary haste
B.Use of improper tools
C.Pruning during the growing season when the bark is loose
D.All of the above
A.It is sometimes recommended for plantations as for natural regeneration to put a controlled ground fire through as soon as possible
B.As a fire protection measure where the fire risk is great, as often with chir pine
C.Both (a) & (b)
D.None of these
A.Enhanced humification and microbial activity leading to higher nutrient availability
B.Improvement of soil structure, by incorporation of plant residues and by encouraging soil fauna.
C.Mulching is of profound importance in dry regions
D.Even in more humid climates it may have very beneficial effects with certain species, e.e., the poplar
E.All of the above
A.The production of clear material on rotations shorter than that would be required with natural pruning
B.The necessary period of growth after treatment is rather long, so the practice ordinarily must be coupled with thinning to stimulate diameter growth
C.Both (a) & (b)
D.None of these
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
