Growsafe Spray Application Techniques 2

Question 1

What is the standard NZ practice for preventing spray tank contamination between different products?

Accepted Answer

Triple rinse the tank with clean water and dispose of rinsate appropriately

Answer

The standard practice is to triple rinse the spray tank with clean water between products to prevent cross-contamination. The rinsate should be disposed of according to the previous product's label directions.

Question 2

In NZ, what is the main advantage of using GPS guidance systems for agrichemical application?

Accepted Answer

Prevents overlapping and missed strips, ensuring even coverage

Answer

GPS guidance systems prevent overlapping and missed strips during application, which ensures even coverage, reduces chemical waste, and minimises environmental impact from over-application.

Question 3

What does the term 'application rate' mean on a NZ agrichemical product label?

Accepted Answer

The amount of product to be applied per unit area (e.g., litres per hectare)

Answer

The application rate specifies the amount of product (or active ingredient) to apply per unit area — typically expressed as litres per hectare (L/ha) or kilograms per hectare (kg/ha) in New Zealand.

Question 4

Why should agrichemical spraying generally be avoided during the hottest part of the day in NZ?

Accepted Answer

Increased evaporation reduces effectiveness and thermal updrafts increase drift

Answer

During the hottest part of the day, increased evaporation reduces the spray reaching the target, and thermal updrafts can carry fine droplets upward and away, increasing the risk of spray drift.

Question 5

What is a 'no-spray zone' in NZ agrichemical application?

Accepted Answer

An area where agrichemical application is prohibited, such as near waterways, dwellings, or sensitive areas

Answer

No-spray zones are designated areas in NZ where agrichemical application is prohibited to protect sensitive environments, waterways, neighbouring properties, schools, and public spaces.

Growsafe Practice Test

Growsafe Practice Test

Growsafe Spray Application Techniques 2