As more of the tree crown is removed, what is the likely impact on subsequent shoot growth?

When more of the tree crown is removed, the likely impact on subsequent shoot growth is a decrease. This is primarily due to the fact that tree crowns play a critical role in photosynthesis, as they contain the majority of the leaves. When a significant portion of the crown is removed, the tree's capacity to produce food through photosynthesis is compromised. This reduction in leaf area results in less energy production, which subsequently affects the overall health and vigor of the tree.

Moreover, the removal of branches and foliage also alters the tree's hormonal balance. The leaves produce hormones such as auxins that promote growth. With fewer leaves, there is a decrease in these hormones, leading to diminished shoot growth.

Although specific tree species may respond differently based on their growth habits and adaptations, the general principle remains that excessive crown removal limits the tree's resources and ability to sustain new growth. Therefore, a decrease in subsequent shoot growth following significant crown reduction is a well-established outcome in arboriculture.