Which of the following is an example of an abiotic disorder in trees?

Leaf scorch is classified as an abiotic disorder because it is caused by non-living environmental factors rather than by pests or pathogens. This condition often occurs due to drought stress, inadequate water supply, or sudden temperature changes, leading to dehydration of the leaf tissues. The symptoms of leaf scorch typically manifest as browning or tip dieback of the leaves, and while it can impact the tree's overall health, it is not a result of biological agents. Understanding the distinction between abiotic disorders, which arise from environmental stressors, and biotic factors such as pests and fungal infections is crucial for accurate diagnosis and management of tree health. Thus, recognizing leaf scorch as an abiotic disorder helps arborists and tree care professionals develop appropriate care strategies to mitigate its effects.