Trees, Stress, and Pests

What are the traits that protect a tree or plant from pests?

Understand the terms: allelochemical and allelopathy.

Describe the 2 general ways in which stress occurs in trees and plants.

How do trees respond to nutrient stress? To drought stress?

How do trees respond to defoliation stress?

What strategies do trees use to adjust for environmental conditions?

What is meant by photosynthetic rate?

How do each of the following factors influence tree resistance to insects and diseases?

Fertilization:

Drought:

Shade:

Environmental stress:

What does CODIT stand for?

Who is Alex Shigo?

Understand, and be able to discuss in detail, the process of compartmentalization.

Know what each of the "walls" represents, and which structures are most/least effective in slowing the spread of decay-causing organisms within a tree.

Be able to identify the various "walls" on tree specimens.