Growsafe Pesticide Application Methods 2

Question 1

What does 'knapsack sprayer' refer to in agrichemical application?

Accepted Answer

A hand-carried backpack sprayer used for small-area or spot applications

Answer

A knapsack sprayer is a manually operated, hand-carried spray unit worn on the back, used for small-area treatments, spot spraying, and in situations where larger equipment cannot access.

Question 2

What is 'spot spraying' and when is it most appropriate?

Accepted Answer

Applying product to individual target weeds or pest locations rather than the whole area, reducing product use

Answer

Spot spraying targets individual weeds or pest sites, reducing product use, cost, and environmental exposure compared to blanket treatment of the whole area.

Question 3

What does 'tank mixing' of agrichemicals involve?

Accepted Answer

Combining two or more products in the same spray tank for a single application pass

Answer

Tank mixing combines multiple products in the spray tank to treat multiple pests or diseases in a single pass, saving time and reducing the number of applications needed.

Question 4

What should be checked on a spray nozzle before each application?

Accepted Answer

That it is not blocked, worn, or damaged, and that it delivers the correct flow rate

Answer

Blocked or worn nozzles produce uneven application rates or patterns. Checking flow rate, pattern, and condition ensures the spray is applied correctly and at the intended rate.

Question 5

What is the significance of 're-entry intervals' (REIs) for agrichemical application?

Accepted Answer

The minimum time workers must wait after application before entering a treated area

Answer

Re-entry intervals (REIs) protect workers from exposure to recently applied agrichemicals. Workers must not enter a treated area until the REI specified on the label has elapsed.

Growsafe Practice Test

Growsafe Practice Test

Growsafe Pesticide Application Methods 2