pesticide safety update brian jones agronomy extension agent february 2, 2009
TRANSCRIPT
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Pesticide Safety Update
Brian Jones
Agronomy Extension Agent
February 2, 2009
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SAFETY FIRST?
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Outline
Restricted use pesticides Label comprehension Risk management Personal protective equipment
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Pesticide Classification
General Use Restricted Use
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For use only by certified applicators or by persons under the direct supervision of a certified applicator.
Designates products that could pose: acute toxicity threat to humans & wildlife ground water contamination concern threat to aquatic organisms
Restricted Use Pesticides
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Pesticide Applicator Classification
Private Commercial
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What Can Certified Applicators Do?
Private Applicators Apply Restricted Use on own property for
crop production Registered Technicians
Apply general use pesticides Apply Restricted Use pesticides under “direct
supervision” of a Commercial Applicator Commercial Applicators
Apply Restricted Use pesticides in that category
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Questions?
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What are Your Responsibilities?
READ AND OBEY THE LABEL Understand what your certification allows Keep records of RUP applications or sales Report “incidents” to OPS in 48 hours Keep OPS informed of your address and
employer changes, and Read Your Mail!
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The Label is the LAW!
The pesticide product label is a binding legal agreement between three parties: US Environmental Protection Agency, product registrant, and product user.
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What is the “labeling”?
Instructions and directions located on the product.
Other instructions and directions that accompany the product.
Specialized instructions and directions in separate documents referred to on the label.
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ActiveActiveIngredientsIngredients
Inert IngredientsInert Ingredients
Label Information
Brand Brand NameName
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Label Information
It’s critical that applicators understand It’s critical that applicators understand and follow these statements!and follow these statements!
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Label Information
Manufacturer’s Manufacturer’s AddressAddress
EPA RegistrationEPA RegistrationNumberNumber
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Signal Words
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Signal Words
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QUESTIONS?
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Toxicity Capacity to cause
harm Nature of the
chemical Dose-related
Exposure Dose Route Duration Frequency
Hazard* = Toxicity x Exposure
*Hazard = Risk
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RISKYBUSINESS?
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Making Pesticide Decisions
Goal is to balance: Lowest toxicity Lowest exposure Most effective pest management
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Toxic Effects May Occur:
During or soon after During or soon after exposureexposure
After repeated After repeated exposure over a exposure over a
long timelong time2005 2005
20042004 2003 2003
20022002
ACUTEACUTE CHRONICCHRONIC
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Toxicity Measure: LD50
The LD50 is the dose of toxin that produces 50%
mortality in a test population.
LD50 is usually expressed in milligrams of toxin per
kilogram of test animal body weight (mg/kg). the lower the LD50 value, the more toxic the
substance the higher the LD50 value, the less toxic the
substance
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Acute Toxicity Ratings
Signal Word How Toxic Oral LD50 (mg/kg)
Lethal Dose (Adult)
Danger – Poison
Highly 0 - 50 Few drops to 1 tsp
Warning Moderately 50 - 500 1 – 2 tsp
Caution Slightly 500 - 5000 1 oz – 1 pt
Caution Almost non-toxic
> 5000 1 pt
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Relative Toxicity, rat oral LD50, mg/kg
Least Least toxictoxic
Most Most toxictoxic ““The dose makes the poison”The dose makes the poison”
Alcohol 14,000Glyphosate (Roundup) 5,600Salt (sodium chloride) 3,000Malathion 1,375Acephate (Orthene) 945Aspirin 750Ammonia 350Diazinon 300Nicotine 50Aldicarb (Temik) 0.93Copper chelate 0.50Botulinum toxin 0.00001
Caution
Warning
DangerPoison
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QUESTIONS?
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To Minimize Pesticide Exposure:
Use integrated pest management (IPM) techniques to minimize pesticide use.
Select the safest, effective formulation. Use a product with reduced concentration
of active ingredient. Reduce rate of application to lowest
effective level. Mix only enough pesticide to complete
assigned task.
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To Minimize Pesticide Exposure:
Select an application method that minimizes contact.
Wear all Personal Protective Equipment (PPE) stipulated on the label
Mixing pesticides usually requires more PPE than applying.
Follow all safety precautions on the label.
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Personal Protective Equipment (PPE)
The label is very specific about the PPE required for mixing/loading, application, and early entry.
Label lists PPE minimums. Can wear more. Applicator is legally required to follow all PPE
instructions on label. Long-sleeve shirt, long pants, waterproof
gloves, and shoes and socks are the minimum PPE found on any agricultural pesticide.
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PPE: Eye Protection
Goggles or face shieldGoggles or face shieldare required if labelare required if labelcalls for eye protection.calls for eye protection.Face shield offers moreFace shield offers moreprotection when mixingprotection when mixingand loading. A chemicaland loading. A chemicalresistant hat is sometimesresistant hat is sometimesspecified on the label.specified on the label.
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PPE: Respirators
Reduces exposure to various dusts and mists.
Label will specify type of respirator.
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PPE: Respirators
Must be made for the pesticide - see the label.
Make sure it fits correctly - no air gaps Change cartridge frequently
See manufacturer’s instructions If not available, after 8 hours of use Sooner if notice odor, etc.
Wash with soap and water after use Store in plastic bag after washing
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PPE: Coveralls
“Coveralls” can be reusable types (cotton or blends) or disposable types such as Tyvek or Kleenguard.
The label will specify if “chemical resistant coveralls” (coated/ waterproof material) are needed.
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Personal Protective Equipment (PPE): Gloves
Waterproof or chemical resistant
Read the label to determine correct type
Never wear cotton, leather, or canvas
Wear under cuff, unless spraying overhead
Natural RubberNatural Rubber
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PPE: Gloves
If the label says “waterproof”, you may choose gloves made of rubber or synthetic materials.
If the label says “chemical resistant”, use barrier laminate, butyl, nitrile, neoprene, or Viton ($$$).
Barrier laminateButyl Rubber
Nitrile Rubber
Neoprene
Viton
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PPE: Boots
Choose knee-high rubber or synthetic boots without holes
Wear cuff on outside of boot
Never wear leather
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Cleaning Contaminated Clothing
Wash contaminated clothing daily. Do not attempt to clean clothing
contaminated with undiluted pesticide - throw away.
Prerinse, don’t crowd washer, use hot water Use long cycle & heavy duty liquid detergent Keep separate from other clothing
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QUESTIONS?
Thank You!