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ACA Exam 1
Ag Chem App exam 1
| Question | Answer |
|---|---|
| What are the 2 use classifications of pesticides? | unclassified and restricted use |
| What are the 2 biggest factors that influence the risk of spray drift? | wind speed & droplet size |
| This is the process in which a positively charged pesticide like paraquat binds to the negatively charged soil particles. a. coagulation b. volatilization c. spray drift d. eutrophication e. photodegradation f. adsorption | f. adsorption |
| Which sprayer nozzles wear out the fastest? | brass |
| Which statement below best defines spray adjuvants? a. they are pesticides that have zero toxicity risk b. products designed to improve mixing/application or enhance performance c. safeners that allow crops to tolerate the pesticide without injury | b. products designed to improve mixing/application or enhance performance |
| What is volatilization? a. the pesticide is broken down into non-toxic molecules by sunlight energy b. the pesticide moves into the crop leaf at a greater rate causing injury c. the pesticide changes from a liquid to a gas form and is still toxic | c. the pesticide changes from a liquid to a gas form and is still toxic |
| What is the purpose of a pre-harvest interval on pesticide labels? a. make sure that unsafe pesticide residues do not occur on the harvested food b. protect honey bees that are important crop pollinators c. make sure that no herbicide carryover occurs | a. make sure that unsafe pesticide residues do not occur on the harvested food |
| What are labels that are the original, full federal registration referred to as? a. Section 3 b. Section 18 emergency use c. section 24c SLN d. Section 25B minimum risk e. section 100 RUP | a. Section 3 |
| What is the process in which a pesticide moves through the soil into groundwater? a. runoff b. volatilization c. leaching d. capillary action e. degradation f. biomagnification | c. leaching |
| What situation below represents a time in the day that has the greatest risk of a temperature inversion occurring? a. mid-afternoon when winds are blowing hard b. late-morning close to noon c. early morning right before sunrise when winds are very calm | c. early morning right before sunrise when winds are very calm |
| What is an example of a process that breaks pesticides down to non-toxic molecules? | microbial degradation- microbes chemical degradation- rain |
| If a pesticide storage tank developed a leak and the pesticide got into a stream; what is the type of pollution? a. leaching b. point-source c. non-point source d. biomagnification | b. point-source |
| What are the 3 C's of managing a pesticide spill? a. condition, contact, consume b. care, control, correct c. corner, clean-up, chemigate d. control, contain, clean-up | d. control, contain, clean-up |
| What do the Group Numbers identify about the pesticide? | site of action |
| If I use Roundup as my preplant herbicide 1 year and Diflexx the next, I am minimizing what risk because of their different site of actions? | weeds developing herbicide resistance |
| What exposure risk is prevented by water soluble packages? | inhalation risk |
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