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Published byCorey Cox
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We will talk about risk.
Risk = Toxicity X Exposure = X
Should we be concerned with pesticides? Ag Health Safety
Glyphosate; 2,4-D; & chlorpyrifos residues have been found in farm homes.
There is a relationship between Rotenone and Parkinson’s Disease.
Isn’t rotenone a natural pesticide, and therefore safe?
Rotenone is from specific tropical plant roots and stems.
Rotenone is mildly toxic to mammals Toxicity – Mildly toxic to mammals Lowest lethal dose for child is 143 mg/kg Human deaths rare – causes vomiting Poorly absorbed by human GI, skin
Rotenone is extremely toxic to fish.
Rotenone was used as an insecticide.
Pesticides derived from plants can be just as dangerous as synthetic chemicals.
Toxicity is measured through LD 50
Milligrams per Kilogram 1 Milligram = Ounces 30,000 Milligrams = Ounces 1 Kilogram = 2.2 pounds Kilograms = 150 Pounds
Milligrams per Kilogram 1 Milligram = Ounces 30,000 Milligrams = Ounces 1 Kilogram = 2.2 pounds Kilograms = 150 Pounds Boric acid, oral LD 50 > 10,000 mg/kg Rotenone, oral LD 50 = 132 to 1,500 mg/kg
Arrange these materials in order from least dangerous to most dangerous, using LD 50. Alcohol Aldicarb (Temik) Ammonia Arsenic Aspirin Botulinum Dioxin Glyphosate Malathion Metalaxyl (Ridomil) Nicotine Salt Sugar
Relative Toxicity, Rat (oral LD 50 in mg/Kg) Sugar (sucrose) 29,700 Alcohol14,000 Glyphosate (Roundup) 5,600 5,600Caution (low) Salt (sodium chloride) 3,000 3,000 Malathion 1,375 1,375Caution (low) Aspirin 1,000 1,000 Metalaxyl (Ridomil) Warning (mod) Ammonia Arsenic (arsenic acid) Nicotine 1 Aldicarb (Temik) Danger - Poison Dioxin (TCDD) Botulinum toxin
Proper purchase can reduce risk.
Purchase the least toxic pesticide that will do the job.
Read and understand the label.
Purchase the safest formulation.
Pesticide formulations include solids.
Pesticide formulations include solids added to water.
Pesticide formulations include liquids.
Pesticide formulations include aerosols.
Pesticide formulations include fumigants.
Best Formulation? Consider Effectiveness? Exposure to applicator? Drift? Non-target species? Ease of use? Application equipment? Cost?
When selecting a pesticide, consider Ready-to-Use.
Risk = Toxicity X Exposure
When purchasing a pesticide, check the container and label.
Purchase only what is needed.
Have clerk bag the pesticide separately.
Proper transport can reduce risk of exposure.
Put in container to prevent tipping or spills. Pesticides
Proper storage can reduce risk of exposure. Pesticide Storage
Have a locked cabinet.
Store liquids below solids in case of spills or leaks.
Keep a list of pesticides in stock.
Reduce exposure by wearing appropriate clothing.
Different parts of bodies absorb pesticides at different rates.
Activity: ID rates of absoprtion
Activity: ID rates of exposure
Reduce exposure by wearing proper clothing. Read the label.
Samples of gloves.
Wear appropriate clothing.
Guard against and prepare for spills.
Kitty litter will absorb spills.
Reduce exposure to your family through proper clean-up and laundering.
Dry on clothes line.
Toddler dies from drinking insecticide stored in garage.
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