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9.1.
Factors Involved in Decline
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Various reasons for tree decline have been well documented:
- exposure to extremes of weather and wind
- old age
- stock attack
- insect attack
- windstorms
- floods or wet conditions
- drought
- Iightning
- dryland or irrigation-induced salinity
- mistletoe attack
- fertility build-up under trees from stock excrement
- soil compaction from stock trampling
- improved pastures associated with fertilization
- fungal attack
- fire
