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1. ABSORPTION The movement of a chemical into
plants, animals (including humans), and/or microorgan-
isms.
2. ACARICIDE A pesticide used to control mites and
ticks. Amiticide is an acaricide.
3. ACTIVE INGREDI- The chemical or chemicals in a
ENT pesticide responsible for killing, poisoning, or repelling
the pest. Listed separately in the ingredient statement.
4. ACUTE TOXICITY The capacity of a pesticide to cause
injury within 24 hours following exposure. LD50 and
LC50
are common indicators of the degree of acute toxicity.
(See also chronic toxicity).
5. ADJUVANT A substance added to a pesticide to
improve its effectiveness or safety. Same as additive.
Examples: penetrants, spreader-stickers, and wetting
agents.
6. ADSORPTION The process by which chemicals are
held or bound to a surface by physical or chemical
attraction.
Clay and high organic soils tend to adsorb pesticides.
7. AGGREGATION See pheromone.
PHEROMONE
8. AEROSOL Amaterial stored in a container under pressure.
Fine droplets are produced when the material dissolved
in a liquid carrier is released into the air from the
pressurized container.
9. ALGAE Relatively simple plants that contain chlorophyll
and are photosynthetic.
10. ALGICIDE Apesticide used to kill or inhibit algae.
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11. ANTI-SIPHONING A device attached to the
DEVICE filling hose that prevents backflow or back-siphoning
from a spray tank into a water source.
12. ANTICOAGULANT A chemical that prevents normal
blood clotting—the active ingredient in some rodenti-
cides.
13. ANTIDOTE A treatment used to counteract the effects
of pesticide poisoning or some other poison in the body.
14. ARACHNID A wingless arthropod with two body
regions and four pairs of jointed legs. Spiders, ticks, and
mites are in the class Arachnida.
15. ARTHROPOD An invertebrate animal characterized
by a jointed body and limbs and usually a hard body
covering
that is molted at intervals. For example, insects,
mites, and crayfish are in the phylum Arthropoda.
16. ATTRACTANT A substance or device that will lure
pests to a trap or poison bait.
17. AVICIDE A pesticide used to kill or repel birds. Birds
are in the class Aves.
18. BACTERIA Microscopic organisms, some of which are
capable of producing diseases in plants and animals.
Others are beneficial.
19. BACTERICIDE Chemical used to control bacteria.
20. BAIT Afood or other substance used to attract a pest to
a pesticide or to a trap.
21. BARRIER APPLI- Application of a pesticide
CATION in a strip alongside or around a structure, a portion of a
structure, or any object.
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22. BENEFICIAL IN- An insect that is useful or helpful
SECT to humans; usually insect parasites, predators, pollina-
tors,
etc.
23. BIOLOGICAL Control of pests using
CONTROL predators, parasites, and disease-causing organisms.
May be naturally occurring or introduced.
24. BIOMAGNIFICA- The process whereby one
TION organism accumulates chemical residues in higher con-
centrations
from organisms it consumes.
25. BOTANICAL PES- A pesticide produced from
TICIDE chemicals found in plants. Examples are nicotine,
pyrethrins, and strychnine.
26. BRAND NAME The name or designation of a specific
pesticide product or device made by a manufacturer or
formulator; a marketing name.
27. CALIBRATE, CAL- The measurement of dispersal
IBRATION OF or output and adjustments made to control the rate
EQUIPMENT,OR of dispersal of pesticides.
APPLICATION
METHOD
28. CARBAMATES A group of
(N-methyl pesticides containing nitrogen, formulated as insecti-
carbamates) cides,
fungicides and herbicides. The N-methyl carbamates
are insecticides and inhibit cholinesterase in animals.
29. CARCINOGENIC The ability of a substance or agent
to induce malignant tumors (cancer).
30. CARRIER An inert liquid, solid, or gas added to an
active ingredient to make a pesticide dispense effective-
ly.