Forest Safety Final

Pesticide Use, First Aid, Chainsaw Safety

Pesticide

Chemical used to control any pest

Pest

Any organism where you don’t want it

Generally the most toxic type of pesticide

Soil fumigants (Kills a variety of things such as insects, dormant seeds, and plants)

Toxicology

Study of poisonous compounds

Toxicity

Measure of probability and severity of harm

What does FIFRA stand for?

Federal insecticide fungicide and rodenticide act

FIFRA Categories

1-Most toxic, 2, 3, 4-Least toxic

LD50 meaning

Lethal dose of a chemical that will kill 50% of a test population, measured mg chemical/kg body weight

LC50 meaning

Lethal concentration of a chemical in water that will kill 50% of a test population (In reference to aquatic species)

Acute toxicity test

One dose

Chronic toxicity test

Long term exposure (detects bioaccumulation)

As toxicity increases, LD50 values

Decrease

LD50 0-50

LD50 50-500

LD50 500-5000

LD 50 >5000

Danger

Warning

Caution

Essentially nontoxic but still take caution

How does accumulation of DDT go through the food chain

Upper levels of the food chain have greater concentrations of DDT due to less losses through respiration and excretion

How does human poisoning occur?

Dermal (94% of exposure cases), Oral (Most deaths), Respiratory (Extremely rapid absorption), Eyes (Rapid absorption)

#1 safety tip for pesticide use

Read the label

Minimum PPE for pesticide use

Long pants, long sleeve shirt, socks, close-toed shoes

What is tank mixing?

Mixing similar pesticides to manage multiple pests with a single application, generally not recommended

How should pesticides be secured?

Under lock and key