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QAL Plant Agriculture With Questions And 100% ALL CORRECT ANSWERS
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QAL Plant Agriculture With Questions And 100% ALL CORRECT ANSWERS
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JACKLINEQAL Plant Agriculture With Questions And 100% ALL CORRECT ANSWERS
Terms in this set (80)
No Observable Effect Level (NOEL) the maximum dose level of a pesticide that produces no noticeable toxic effect on test animals
a chemical's airborne concentration in parts per million that produces no adverse affects over
Threshold Limit Value (TLV)
time
one of the original synthetic pesticides, used for mites and insects, some highly poisonous to
Organochlorine mammals, breaks down slowly, most early formulations now banned: DDT, chlordane,
toxaphene, dieldrin
some of the most acutely toxic chemicals, many formulations are absorbed through the skin,
lungs, or digestive tract, they interfere with animal and human nervous systems similar to
Organophosphates
carbamates, they break down rapidly, common formulations include malathion, diazinon,
chlorpyrifos
synthetic organic pesticides, they break down rapidly, they impair nerve function, they are
Carbamates highly toxic to mammals but does not build up in tissue, common formulations include
carbaryl, methomyl, metam-sodium, metam-potassium
QAL Plant Agriculture
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, important herbicide used to control broadleaves and grasses, used as a preemergent and
postemergent, they inhibit photosynthesis, they persist in soil and move with water and are
Triazines
frequently detected in waterways, they are toxic to mammals and fish, common formulations
include atrazine, simazine, prometryn
insecticide that mimics the efforts of nicotine, disrupts the central nervous system causing
Neonicotinoids paralysis and death, less toxic to mammals than organophosphates and carbamates, harmful to
bees
synthetic pesticides, interferes with sodium transport in nerve cells, they are persistent and
Pyrethroids found in waterways, they are often used with synergists, toxic to mammals, common
formulations include bifenthrin, permethrin, cypermethrin
herbicides used on broadleafs and grasses, safe for mammels, requires only low application
Sulfonylureas rates, slightly toxic to fish and invertebrates, resistance has developed to this family, common
formulations include rimsulfuron, sulfometuron methyl, chlorsulfuron
fungicides that disrupts respiration and metabolism to suppress pathogens, nontoxic to
Strobilurins mammals, birds and bees, highly toxic to fish and aquatic invertebrates, common formulations
include pyraclostrobin, azoxystrobin, trifloxystrobin
forms a milky suspension when mixed with water, uses higher percentages of active
Wettable Powders (W or WP) ingredients, safe for phytotoxicity, the inert carrier is abrasive which wears out pumps and
nozzles, potential hazard of inhaling dust, requires constant agitation, leaves visible residues
Dry Flowable (DF) or Water_Dispersible Granules similar to WP but consists of small granules, produces less dust making it safer than WP, easy to
(WDG) mix and measure, requires constant agitation
similar to WP but completely dissolves in water, requires no agitation, they are not abrasive to
Soluble Powders (S or SP) nozzles or pumps, only a few pesticides available in SP because most active ingredients do not
dissolve, inhalation is a potential hazard
petroleum soluble, when added to water it creates an emulsion which requires agitation, they
are very versatile, they penetrate porous materials better than WP, if spilled they spread
quickly and are difficult to clean up, porous PPE will absorb them, they pass through skin more
Emulsifiable Concentrate (E or EC)
readily than WP, can cause serious eye injury, they are phytotoxic to sensitive plants, can
deteriorate rubber and plastic hoses and gaskets, can damage some pump parts and corrode
painted surfaces
QAL Plant Agriculture
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