Chapter 13 vocab Flashcards
(41 cards)
Organism that is harmful or destructive
with humans or our social or economic endeavors.
Pest
Organisms that feed on
ornamental plants or agricultural crops or animals
Agricultural pest
Plants that compete with agricultural
crops, forests, and forage grasses for light and
nutrients.
Weeds
Chemical used to kill plants
Herbicide
Chemical used to kill animals and insects
Pesticide
Use of chemicals to kill large numbers of pests
Chemical treatment
Seeks to give long-lasting protection
by developing control agents on the basis of
knowledge of the pest’s life cycle and of
ecological relationships.
Ecological control
An approach to controlling pest populations
by using both chemical and ecological methods in a
way that brings about long-term management of pest
populations and also has minimal environmental
impact.
Integrated pest management
included toxic heavy metals such as lead, arsenic,
cyanide, and mercury
First-generation pesticides
Minute insects that suck the juices from plant cells
Scale insects
It was effective against multitude of insect pests.
Broad spectrum
It did not break down readily in the environment and provided long lasting protection
Persistent
Pesticides that interfere with reproductive hormones
Endocrine disruptors
People who study birds, observed drastic declines in populations of many species of birds that fed at the tops of food chains
Ornithologists
Process of accumulating higher and higher doses of a pesticide up the food chain
Bioaccumulation
The multiplying effect of bioaccumulation in a food chain
Biomagnification
A phenomenon that after a pest has been virtually eliminated with a pesticide, the pest population not only recovers, but explodes to higher and more severe levels.
Resurgence
A phenomenon in which small populations of insects that were previously of no concern because of their low
numbers suddenly start to explode, creating new problems.
Secondary-pest outbreaks
the increase use of chemicals increases resistance and secondary-pest outbreaks, which lead to the use of new and larger quantities of chemicals
Pesticide treadmill
Break down into simple nontoxic products within a few weeks of being used.
Nonpersistent pesticides
Multiple factors work together to create an unexpected outcome
Synergistic effects
Involves working with natural factors instead of synthetic
chemicals.
Natural control/Biological control
A no chemical alteration of one or more environmental factors in such a way that the pest finds the environment unsuitable or is unable to gain access to its target.
Cultural control
Breeding plants that are resistant to insect pests
Genetic control