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      Question

      How wide should the 'Ring' of bark be in Air

      Layering?
      A 1 cm Correct Answer Incorrect Answer
      B 2.5 to 3 cm Correct Answer Incorrect Answer
      C 10 cm Correct Answer Incorrect Answer
      D Entire branch Correct Answer Incorrect Answer

      Solution

      This width is sufficient to prevent the bark from growing back over the wound (bridging) before roots have a chance to form. It effectively stops the downward flow of carbohydrates and auxins, forcing root initiation.

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