Chapter 9-Disease Identification and Control Quiz

Most diseases are caused by insects.

• True

• False

Avoidance, eradication, exclusion, resistance and therapy all have a role in disease control.

• True

• False

Control involves only the use of chemicals for protection.

• True

• False

In most cases, control efforts must occur prior to penetration if they are able to be effective.

• True

• False

Pathogenic diseases are conditions that usually occur when the plant interacts with some unfavorable aspect of its environment.

• True

• False

A common physiological and cultural stress is:

• Poor soil drainage

• Excessive fertilization

• Tight rootball

• All of the above

The most successful disease control programs use more than one approach to limit pathogen introduction and development.

• True

• False

Manipulation of the environment is a significant method of disease control in production systems.

• True

• False

It is important to understand how plant disease develops in order to control diseases.

• True

• False

Plant selection has no value in controlling plant problems.

• True

• False