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Winter injury on red spruce is caused by combination of cold weather and acid rain. And, insect
infestation on hemlock branches is due to wooly adelgids feeding off the excess nitrogen.
Mature trees can die from infestation within four years.
| |
|
|
|
Winter injury on red spruce is caused by combination of cold weather and acid rain. And, insect
infestation on hemlock branches is due to wooly adelgids feeding off the excess nitrogen.
Mature trees can die from infestation within four years.
| |
|