Label Reading
The pesticide label is a legal document â applying a pesticide inconsistent with its labeling is a violation of federal law (FIFRA). This topic covers the 11 required sections of a pesticide label, signal words, precautionary statements, Restricted Entry Intervals (REIs), Pre-Harvest Intervals (PHIs), and how to calculate application rates from label directions.
Study Guide: Label Reading
Review these sample questions before starting the practice test.
Q1: The signal word "DANGER" on a pesticide label indicates:
- A. The product has a pleasant odor
- B. The product is highly toxic (Toxicity Category I) â
- C. The product is moderately toxic
- D. The product is safe for all uses
The signal word "DANGER" indicates the product is in Toxicity Category I â the most toxic category. Products with this signal word may be highly toxic through any route of exposure (oral, dermal, inhalation, or eye/skin irritation).
Q2: Which signal word indicates the LOWEST level of toxicity?
- A. DANGER
- B. CAUTION â
- C. WARNING
- D. FATAL
CAUTION is the signal word for Toxicity Categories III and IV, representing the lowest levels of acute toxicity. The hierarchy from most to least toxic is: DANGER/POISON > WARNING > CAUTION.
Q3: On a pesticide label, the "Precautionary Statements" section includes information about:
- A. The price of the product
- B. Hazards to humans, domestic animals, and the environment â
- C. How to advertise the product
- D. Competitor products
The Precautionary Statements section contains hazard warnings organized into subsections: Hazards to Humans and Domestic Animals, Environmental Hazards, and Physical/Chemical Hazards. This section also includes required PPE information.
Q4: The "Directions for Use" section of a pesticide label is:
- A. Optional reading for experienced applicators
- B. Legally binding instructions that must be followed exactly â
- C. Suggestions that can be modified at will
- D. Only relevant for homeowners
The Directions for Use section contains legally binding instructions. Under FIFRA, it is a violation of federal law to use any pesticide in a manner inconsistent with its labeling. This includes application rates, sites, methods, and timing.
Q5: What does it mean if a pesticide label states "FOR RESTRICTED USE ONLY"?
- A. It can only be used indoors
- B. It can only be sold to and applied by certified applicators or under their direct supervision â
- C. It is restricted to use on weekdays only
- D. It can only be used in certain states
A "Restricted Use" designation means the product may only be purchased and applied by certified pesticide applicators or persons working under their direct supervision. This classification is based on the product's potential for harm.
Q6: The "active ingredient" percentage on a label tells you:
- A. The percentage of water in the product
- B. The proportion of the product that directly controls the target pest â
- C. How much of the product evaporates
- D. The application rate
The active ingredient statement lists the chemical(s) in the product responsible for controlling the target pest and their percentage by weight. The remaining percentage consists of inert (other) ingredients.
Q7: If a pesticide label says "Do not apply within 100 feet of water," this statement is found in which section?
- A. First Aid
- B. Environmental Hazards â
- C. Storage and Disposal
- D. Product Name
Buffer zone requirements and water body protection statements are found in the Environmental Hazards section of the Precautionary Statements. These restrictions protect aquatic organisms and water quality.
Q8: A pesticide label states "Do not apply more than 4 times per season." Applying 5 times would be:
- A. Acceptable if pest pressure is high
- B. A federal violation of FIFRA â
- C. Only a state violation
- D. Permissible with written permission from the landowner
Exceeding the maximum number of applications stated on the label is a violation of federal law under FIFRA. Label directions including maximum application frequency are legally binding regardless of pest pressure.
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