Chapter 11 plant health care Flashcards
Plant health care and integrated pest management are essentially the same thing.
False
Plant resources, produced through photosynthesis are allocated among four primary functions
Growth
Maintenance
Storage
Defense
______ can be described as any factor that limits a plants ability to acquire sufficient light, water or essential minerals
Stress
The ______ and ________in tree cells are indigestible to many insects and other animals, and eve to some pathogens.
Cellulose, lignin
Trees produce _________ such as tannins and phenols that have toxic or deterrent effects on certain insects.
Allelochemicals
Researchers have observed that rapidly growing trees are sometimes less resistant to certain insects and diseases.
True
________ is the process of observing, identifying, recording, and analyzing what happens with plants in the landscape.
Monitoring
The process of gathering information, assessing the severity and implications of the problem determining client expectations and deciding on a course of action is called the ________ _________ _______
Appropriate response process
Integrated pest management
A systematic approach to insect and disease management that incorporates a combination of techniques including resistant plants as well as cultural, biological and chemical control tactics.
A simple degree day model uses an established threshold temperature and the daily average temperatures to predict pest development stages.
True
When possible arborists should select trees that are _____ to known insects or diseases.
Resistant
Key pests
organisms that are frequently encountered in landscapes, predictably cause injury to landscape plants and may include particularly noxious pests in the area.
Extensive plantings of the same species known as __________, can have catastrophic consequences if an uncomfortable problem is introduced.
Mono cultures
PHC practitioners must choose from three pest management goals
Prevention, eradication, suppression
Pesticides often kill the targeted pest within minutes or hours of application, whereas biological control can take days or weeks to suppress a pest population.
True
