Identification should include disorders caused by
- abiotic factors
- weather
- nutrient deficiencies
- unfavorable soil properties
- pH
- fertility imbalances
- moisture extremes
- temperature extremes
- chemical toxicity
- human factors (e.g., pollution, injury)
- biotic factors
- pests
- competition
- allelopathy.
Process/Skill Questions:
- What is the difference between a biotic factor and an abiotic factor?
- What are examples of human-caused tree disorders?