How to Calibrate Your Sprayer

Important Note Before Reading:

When applying each of these products, please ensure you are wearing the correct PPE for each product, as stated on the product label.

When using these types of products, always read the label before application.

Different types of sprayers

There is a wide range of different types of sprayers that are on the market. Backpack sprayers are better suited for larger areas as they usually hold a larger amount of water and can be easier to use when spraying for longer. Other handheld sprayers vary in size and design are better suited for medium to small lawn sizes.

As every different type of sprayer and brand of sprayer will disperse water at different rates calibrating your sprayer is important, especially when applying commercial-grade products.

Why is calibrating your chemical sprayer important?

When applying products to your lawn it is important to ensure you are applying the correct amount of product for your lawn size. This will help avoid either not spraying enough or too much product to your lawn.

How to calibrate your sprayer

To calibrate your sprayer, you will need to find out how much water your sprayer takes to spray 100 m2 and add the label rate of the product to that quantity of water.

To find out how much water your sprayer takes to spray 100m2, best to spray a 10m2 hard surface like concrete and multiply it by 10. From this you can determine that if it’s going to take say 5L of water for you to cover 100sqm, then that’s the required amount of water you need to mix the product with.

When calibrating your sprayer, it is also important to walk at the same speed as this will also affect your calibration.

Best to check your sprayer’s nozzle regularly for any blockages and wear and tear as this can also affect your sprayer.

Applying Primo Maxx (Plant Growth Regulator)

When applying Primo Maxx, firstly calibrate your sprayer.

For Buffalo, Common Couch and Hybrid Couch add 10 to 40mL of Primo Maxx per 100m2. For Kikuyu add 20 to 80mL of Primo Maxx per 100m2.

Please have a look at the Primo Maxx Label for further information.

Applying Monument Liquid Herbicide

When applying Monument Liquid Herbicide, firstly calibrate your sprayer.

The application rates do change for Monument depending on what weed you are wanting to target. Please have a look at the label for the correct application rates for the weed you are targeting. The below details how you can convert mL/ha to mL/100m2.

150 mL/ha (for Nutgrass and Mullumbimby Couch only)

Therefore, 150 mL per 10 000 m2

Therefore, 1.5 mL per 100 m2

Then add 1.5mL of Monument (for Nutgrass and Mullumbimby Couch only) to your calibrated sprayer to treat 100m2.

Please have a look at the Monument Liquid Herbicide Label for further information.

Applying Heritage Maxx Systemic Fungicide

When applying Heritage Maxx, firstly calibrate your sprayer.

For Heritage Maxx, the label rate is:

6L/ha

Therefore, 6L per 10 000 m2

Therefore, 60 mL per 100 m2

Then add 60mL of Heritage Maxx to your calibrated sprayer to treat 100m2.

Please have a look at the Heritage Maxx Label for further information.

Applying Proforce Duke 100WG Herbicide

When applying Proforce Duke 100WG Herbicide, firstly calibrate your sprayer.

The application rates do change for Duke depending on what weed you are wanting to target. Please have a look at the label for the correct application rates for the weed you are targeting. The below details how you can convert g/ha to g/100 m2.

150g/ha (for Winter Grass and Ryegrass only)

Therefore, 150g per 10 000 m2

Therefore, 1.5g per 100 m2

It is best to mix the herbicide with a small amount of water first to ensure the product is properly dissolved and then add to your sprayer.

Then add 1.5g of Proforce Duke 100WG Herbicide to your calibrated sprayer to treat 100 m2.

Please have a look at the Proforce Duke 100WG Herbicide Label for further information.

Applying Agador Insecticide

When applying Agador Insecticide, firstly calibrate your sprayer.

The application rate for Agador does change for the pest which you were wanting to target.

For Couch Mites use 10 to 20 mL per 100m2. For Ring Nematode and Sting Nematode use 20mL per 100m2.

Please have a look at the Agador Label for further information.

Have a ColourGuard RTU and want to use it in a knapsack?

If you have a ColourGuard hose on bottle and are wanting to apply it through a sprayer, use half the 2L bottle of ColourGuard and apply with 3.5L of water. This will then be able to cover up to 100m2.

When applying each of these products, please ensure you are wearing the correct PPE for each product, as stated on the product label.

When using these types of products, always read the label before application.