Iowa 3OT questions and answers A+ Grade 2026\2027
What is a pesticide
- correct answer a chemical used to kill insects, rodents, and other pests
Contact vs systemic pesticides
- correct answer Contact must physically touch the pest. Systemic enters via the roots or leaves which
causes pest feeding on it to die.
Difference between preemergence and postemergence pesticides
- correct answer Pre is applied before weeds germinate, post is after they are growing
Application timing for pest control for:
Plant diseases
Insects
Weeds
- correct answer -Plants should be protected before infection (scab on a tree)
-Insects depends (grubs can only be killed during mid-late summer)
-Weeds are most effective post treatment
What are the ways pesticides can injure nontarget plants
- correct answer Drift and root zones
What are the posting rules when applying pesticide?
- correct answer This area is chemically treated. keep off. do not remove sign for 24 hours.
Two characteristics of water that influence effectiveness of spray mixture
- correct answer Water pH (alkaline)
Hardness (amount of dissolved minerals)
What is a pesticide
- correct answer a chemical used to kill insects, rodents, and other pests
Contact vs systemic pesticides
- correct answer Contact must physically touch the pest. Systemic enters via the roots or leaves which
causes pest feeding on it to die.
Difference between preemergence and postemergence pesticides
- correct answer Pre is applied before weeds germinate, post is after they are growing
Application timing for pest control for:
Plant diseases
Insects
Weeds
- correct answer -Plants should be protected before infection (scab on a tree)
-Insects depends (grubs can only be killed during mid-late summer)
-Weeds are most effective post treatment
What are the ways pesticides can injure nontarget plants
- correct answer Drift and root zones
What are the posting rules when applying pesticide?
- correct answer This area is chemically treated. keep off. do not remove sign for 24 hours.
Two characteristics of water that influence effectiveness of spray mixture
- correct answer Water pH (alkaline)
Hardness (amount of dissolved minerals)
