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
Related Mcqs:
- The rate of replacement of species composition with the change in the environment constitutes:
A. Gamma diversity
B. Beta diversity
C. Community diversity
D. Ecosystem diversity - The replacement of old forest stands by ______ is called regeneration.
A. New
B. Young
C. Both (a) & (b)
D. None of these - Tharparkar Desert ranges covers ______ million ha.
A. 2.65
B. 2.7
C. 2.75
D. 2.8 - Cholistan Desert ranges covers about ________.
A. 2.7 million ha
B. 2.8 million ha
C. 2.9 million ha
D. None of these - The desert areas in Indo-Pakistan subcontinent covers about ________.
A. 1.8 million square km
B. 1.7 million square km
C. 1.9 million square km
D. None of these - Crown thinning or high thinning is:
A. Trees are removed from the upper crown classes in order to open up the canopy
B. It favour the development of the most promising trees of the same classes
C. Both (a) & (b)
D. None of these - Suppressed trees (S) is:
A. Which reach only about half to 5/8th of the height of the best trees with their leading shoots definitely overtopped by their neighbours
B. Al least shaded on all sides by the cm
C. A small tree of height typical of suppressed trees standing with its leader free in a chance gap should not be classed as D or D
D. All of the above - 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 major steps of natural pruning is:
A. Killing of the branches
B. Shedding of the dead branches
C. Occlusion or healing over of the branch stub
D. 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
The correct answer to the question: "Beating up (Replacement) covers:" is "All of the above".
