terms from core book, Pesticide Applicator PA, Pesticide exam
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COMPATIBLE - ✔✔A mixture of two or more chemicals that does not reduce the || || || || || || || || || || || || || ||
effectiveness characteristics of any individual chemical.
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CONCENTRATION - ✔✔The amount of active ingredient in a given volume or weight of || || || || || || || || || || || || || ||
formulated product. ||
CONTACT (LOCAL) EFFECTS - ✔✔Injury at the point of contact, including skin
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discoloration and irritation (dermatitis), such as itching, redness, rashes, blisters, and burns.
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Swelling; stinging; and burning of the eyes, nose, mouth, or throat are all contact effects.
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CONTACT PESTICIDE - ✔✔Any pest control product that affects pest organisms upon
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contact. These may be insecticides, miticides, fungicides, or herbicides.
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CONTAINMENT PAD - ✔✔An impermeable mat used for mixing and loading pesticides || || || || || || || || || || || ||
and cleaning equipment that is designed to catch spills, leaks, overflows, and wash water for
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reuse or disposal.
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CORROSIVE POISON - ✔✔A substance containing a strong acid or base that will severely
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burn the skin, mouth, stomach, or respiratory tract.
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CRACK-AND-CREVICE APPLICATION - ✔✔Small amounts of pesticide placed into || || || || || || || || ||
cracks and crevices in buildings (such as along baseboards and in cabinets).
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CROSS-CONTAMINATION - ✔✔The accidental mixing of one pesticide with another, || || || || || || || || || ||
usually in an improperly cleaned sprayer or in storage because of the airborne movement of
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a volatile pesticide.
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CROSS-RESISTANCE - ✔✔When a pest population that is already resistant to one pesticide || || || || || || || || || || || ||
becomes resistant to a related chemical with a similar mode of action.
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CURATIVE PESTICIDE - ✔✔A pest control product that can inhibit or kill a disease-
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causing organism after it is established in the plant or animal.
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DANGER - ✔✔The signal word associated with pesticide products classified as highly toxic
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by at least one route of entry.
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DANGER-POISON - ✔✔The signal word associated with pesticide products classified as || || || || || || || || || || ||
highly toxic, corrosive, or highly irritating to skin and eyes.
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DEFOAMING AGENT - ✔✔An adjuvant used to reduce the foaming of a spray mixture due || || || || || || || || || || || || || ||
to agitation.
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DEFOLIANT - ✔✔A chemical that initiates the premature drop of leaves, often as an aid in
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harvesting a crop. || ||
DEGRADATION - ✔✔The process by which a chemical compound is broken down into || || || || || || || || || || || || ||
simpler compounds by the action of microorganisms, water, air, sunlight, or other agents.
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Degradation products are usually-but not always-less toxic than the original compound.
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DELAYED EFFECTS - ✔✔Illnesses or injuries that do not appear immediately (within 24
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hours) after exposure to a pesticide. The effects may be delayed for weeks, months, or even
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years.
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DERMAL - ✔✔Pertaining to the skin. || || || || ||
DERMAL LD50 - ✔✔The amount of a pesticide that can kill 50% of a population of test
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animals when absorbed through the skin.
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DERMAL TOXICITY - ✔✔The ability of a pesticide to injure a human or animal when
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absorbed through the skin.|| || ||
DERMATITIS - ✔✔The inflammation, itching, irritation, or occurrence of a rash after
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exposure to a chemical. || || ||
DESICCANT - ✔✔A chemical that promotes drying or loss of moisture from leaves or other
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plant parts. Also, a chemical that removes water from arthropods or destroys the waxy
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covering that protects these organisms from water loss.
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DIAGNOSIS - ✔✔The positive identification of a problem and its cause.
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DILUENT - ✔✔Any inert liquid, solid, or gaseous material that is combined with a
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pesticide active ingredient during the manufacturing process.
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ABIOTIC FACTORS - ✔✔Related to nonliving elements, such as air pollutants, wind, water,
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and temperature.
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ABSORPTION - ✔✔The movement of a chemical into plants, animals (including humans),
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microorganisms, or soil. || ||
ACIDIC - ✔✔Having a pH less than 7.
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ACTION THRESHOLD - ✔✔A predetermined level of pest infestation or damage at which
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some type of pest management action must be taken.
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ACTIVATED CHARCOAL - ✔✔A finely ground charcoal that adsorbs chemicals.
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ACTIVATOR - ✔✔An adjuvant added to a pesticide to increase its toxicity.
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ACTIVE INGREDIENT - ✔✔The chemical or chemicals in a product responsible for
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pesticidal activity. ||
ACUTE EFFECTS - ✔✔Illnesses or injuries that occur shortly (within 24 hours) after
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exposure to a pesticide. || || ||
ACUTE EXPOSURE - ✔✔An exposure to a single dose of pesticide.
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ACUTE TOXICITY - ✔✔An injury or illness produced from a single pesticide exposure.
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LD50 and LC50 are common indicators of the degree of acute toxicity.
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ADVISORY STATEMENTS - ✔✔Manufacturer recommendations or best management
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practices for optimal use of a pesticide product.
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ADJUVANT (ADDITIVE) - ✔✔A substance added to a pesticide to improve its effectiveness
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or safety.
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AEROSOL - ✔✔A chemical stored in a container under pressure. An extremely fine mist is
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produced when the material, dissolved in a liquid, is released into the air.
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