Chemical Damage

Lab #1 Non-infectious Diseases

Chemical Damage

Salt Damage on Harwoods:

000176

Salt Damage on basswood: Note necrosis and chlorosis at edge of leaves.

Salt damage on oak

Salt Damage on oak.

Salt damage on maple

Salt Damage on maple.

Salt damage on white pine

Salt Damage on pine: Tips of needles are affected, first turning chlorotic then necrotic.

Herbicide damage

Herbicide Damage- This herbicide caused curling of leaf edges as well as the "Shepard's crook" (branch tip curling or epinasty) and killed the tree.

Herbicide damage on aspen

Herbicide Damage on aspen - low concentrations of herbicides can cause distorted growth and odd looking leaves.