Moderate
Effecting/effects of thinning are:
Correct answer: C. Both (a) & (b)
- A. Average tree size in the remaining crop increases with increasing weight of thinning
- B. Delay in thinning is not compensated for in terms of girth increment by removing larger volume, unless this volume represents a greater proportion of the growing stock than did the earlier thinning
- C. Both (a) & (b)
- D. None of these
Explanation
Heavier thinning generally leaves fewer trees with more growing space, increasing the average size of the remaining trees. Delayed thinning cannot usually recover the lost girth increment simply by later removing a larger volume, so both statements are valid.
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