What does 'balled and burlapped' refer to in tree transplanting?

The term 'balled and burlapped' refers specifically to the method of securing the root ball of a tree or shrub for transport. This technique involves wrapping the root system in burlap after it has been dug from the ground, which helps to keep the soil intact around the roots. This practice is vital for ensuring that the tree can survive the stress of transplanting because it minimizes root disturbance and provides some insulation and protection during transportation.

In this context, the other options do not accurately capture the meaning of 'balled and burlapped.' Type of potting material, tree species classification, and soil amendment techniques are unrelated to the process of how the roots are prepared and secured for the act of moving the plant from one location to another. By understanding that 'balled and burlapped' specifically refers to how the roots are handled for transport, it emphasizes the importance of proper techniques in tree transplanting for successful establishment in a new location.