The elimination of branches by the physical and biotic agencies of the environment is called:
A.Natural
B.Self-pruning
C.Both (a) & (b)
D.None of these
Category: Tending Of Forest Crops Mcqs
Thinnings is:
A.A felling made in an immature stand fox the purpose of improving the growth and form of the trees that remain, without permanently breaking the canopy
B.Cutting made in immature stands in order to stimulate the growth of the trees that remain and to increase the total yield of useful material from the stand are termed thinnings
C.Both (a) & (b)
D.None of these
The standard grades of ordinary thinning is:
A.Light Thinning (A-Grade)
B.Moderate Thinning (B-Grade)
C.Heavy Thinning (C-Grade)
D.Very Heavy Thinning (D-Grade)
E.All of the above
The major effects of mulches, irrespective of their composition, are attributed to:
A.Suppression of weeds, by restricting the amount of light on the ground surface and thus hindering their germination and growth
B.Conservation of soil, by preventing erosion
C.Maintenance or improvement of soil structure, by eliminating or mitigating the severity of rain and wind action
D.All of the above
Harmful effects can also result from:
A.Pruning trees that are growing very slowly
B.Removing large branches
C.Eliminating too much of the live crown
D.Committing similar errors of judgment
E.All of the above
Free thinning is:
A.The attention is concentrated still further on the selection of the stems evenly spaced over the ground
B.Which are to be retained to maturity or till the last thinning or two
C.Both (a) & (b)
D.None of these
Soil working is:
A.Involved in uprooting weeds as compared with cutting them, has been the subject of experiments
B.Which indicate that local experience is necessary
C.As sometimes the gain is considerable, whilst at other times, perhaps mainly with light soil and only moderate weeds
D.All of the above
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
Dominated trees (d) is:
A.Which do not form part of the upper most leaf canopy
B.But the leading shoots of which are not definitely overtopped by the neighbouring trees
C.Both (a) & (b)
D.None of these
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
