What is the primary effect of allelochemicals produced by trees?

Allelochemicals are chemical compounds that are produced by trees and other plants which can have various ecological effects. The primary effect of these compounds is to serve as a deterrent to herbivores. By releasing these chemicals into the environment, trees can reduce the likelihood of being eaten by pests and other animals. This chemical defense strategy helps protect the trees from damage and increases their chances of survival.

While promotion of growth, attraction of pollinators, and enhancement of photosynthesis are important functions in the life cycle of plants, they are not the primary role of allelochemicals. Instead, these chemicals often have negative effects on the growth and feeding of herbivores, allowing the plant to allocate more resources toward growth and reproduction rather than damage control from grazers. This ecological interaction is crucial for maintaining plant health and survival in competitive environments.