What contributes to the development of witches' broom in plants?

The development of witches' broom in plants is primarily associated with the dense clustering of branches. This phenomenon occurs when there is an abnormal proliferation of shoots, often leading to a compact mass resembling a broom. This growth pattern can be triggered by various factors, including genetic predisposition, environmental conditions, or, more commonly, by the influence of infectious agents like certain pests or pathogens.

While other factors may affect plant health and growth, they do not directly lead to the specific condition known as witches' broom. For instance, excessive watering can lead to root rot or other water-related issues, and inadequate sunlight can hinder overall growth but does not inherently cause the characteristic branching pattern of witches' broom. Similarly, while soil nematodes can cause root damage and contribute to poor plant health, their impact is not the same as that produced by the growth abnormality characteristic of witches' broom. Therefore, the dense clustering of branches stands out as the key factor in the formation of this specific growth anomaly.