Tree Compartmentalization (CODIT).pdf

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Tree Compartmentalization: CODIT-Compartmentalization of Decay In Trees

Tree Compartmentalization:

CODIT- Compartmentalization of Decay

In Trees

Sponsored at New River Community

College Presented by Elizabeth Garter, Horticulture

Specialist at NRCC.

Funded by The Urban & Community

Forest Grant March 2003

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What Is Compartmentalization?

When a tree has been wounded, disease

and decay may infect the site of the

damage. To protect itself against the spread

of decay to healthy tissue trees are able to

seal off or compartmentalize the wounded

area.

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Compartmentalization

The widely accepted theory of how this

healing process occurs is referred to as

“CODIT” was developed by Dr. Alex

Shigo.

Trees lay down barrier walls to prevent

decay spread in four directions.

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Tree Defenses

Wall 1- tree responds

to wound by plugging

the upper and lower

vascular elements to

limit vertical spread

of decay.

Wall 2- the last cells

of the growth ring,

limits inward spread.

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Tree Defenses

Wall 3- ray cells

compartmentalize

decay by limiting

lateral spread.

Wall 4- strongest

wall, the new growth

ring that forms after

injury (not shown).

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