Question:

______________________ is the tending operation carried out in the early stage of plant development (sapling) to reduce the above ground competition.

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Sequence of Tending: Weeding (Seedling) $\rightarrow$ Cleaning (Sapling) $\rightarrow$ Thinning (Pole). This hierarchy is key for silviculture questions.
  • Thinning
  • Salvage cutting
  • Secondary felling
  • Cleaning
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The Correct Option is D

Solution and Explanation

Step 1: Understanding the Question:
The question refers to "tending operations"—management practices used to improve the growth of a forest crop at different stages.

Step 2: Detailed Explanation:


Definition of Cleaning: Cleaning is a tending operation performed in a sapling-stage crop. It involves removing inferior individuals of the same species or any undesirable species that are competing with the desired future crop.

Objective: Its primary goal is to provide more light and space to the "elites" or "future trees" of the forest by removing above-ground competition like climbers and "wolf" trees.

Timing: It takes place after "weeding" (which is done in the seedling stage) but before "thinning" (which is done in the pole stage).

Other Options:
- Thinning (A): Done later in the stand's life to reduce the number of trees of the main crop.
- Salvage (B): Removal of dead or dying trees after a natural disaster.
- Secondary felling (C): A harvest stage in a shelterwood system.

Step 3: Final Answer:

The tending operation described is Cleaning.
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