- Is "Protect Plus" the same as Protec Plus?
Yes. “Protect Plus” is a common misspelling of Protec Plus, the esterified canola oil spray adjuvant from Grevillia Ag. The correct product name is Protec Plus (without the “t”). It’s part of the Protec range of crop-protection adjuvants supplied across Australia and New Zealand.
- What is Protec Plus used for?
Protec Plus is a registered spray adjuvant used to enhance the performance of herbicides, insecticides, fungicides, foliar fertilisers, defoliants, and desiccants. It improves wetting, droplet deposition, rainfastness, and chemical uptake — and reduces drift and odour. It’s used across broadacre cereals, woody-weed control, horticulture, and orchard spraying.
- What rate of Protec Plus should I use?
Protec Plus rates depend on the spray situation. For broadacre and boom spray, use 200 mL–1 L per 100 L of water (lower rates suit low-volume products). Aerial, CDA, or ULV applications use 200 mL–2 L/ha. Hand-gun spot spraying uses 150–300 mL per 100 L. Always check the label for the specific herbicide or insecticide you’re tank-mixing.
Protec Plus is the flagship spray adjuvant in our Protec range — an esterified virgin canola oil combined with non-ionic surfactants that enhances the effectiveness of selected herbicides, insecticides, fungicides, and defoliants. Often searched as "protect plus", this is the proven adjuvant Australian and New Zealand farmers, agronomists, and contractors have used for over two decades to lift spray efficacy on broadacre and horticultural crops.

PROTEC PLUS is widely used with broadacre cereal herbicides where a crop oil is used with the spray, with woody weed control herbicides, and in horticulture.
Protec Plus Improves:
Uses:
Superior Emulsification: That is a greater amount of the oil is in suspension. This makes PROTEC PLUS more efficient because a higher percentage of oil has been emulsified.
Flash Emulsification: PROTEC PLUS does not require continuous agitation and mixes instantaneously, eliminating the oily residue on top of spray mixes.
UV Stable: PROTEC PLUS has excellent UV stability. This enables the active chemicals to be more stable and to be more available to the target. This results in a higher efficacy of the product it is used with.

Rainfast: PROTEC PLUS is rainfast; ensuring sprays are not diluted by dew or sudden rainfall. Trials show that sparys including PROTEC PLUS are rainfast within minutes. See Technote #3 in the technotes section (registration reguired).
Wetting: As PROTEC PLUS is an esterified canola oil it has excellent wetting characteristics as the non-ionic wetters have been incorporated in the formulation.
Drift Control: PROTEC PLUS reduces drift because of its longer ester molecular structure which eliminates fine droplets, ensuring more spray reaches the target for higher efficacy.
Reduces Odour: When PROTEC PLUS is added to your spray chemicals it decreases the odour and volatilisation. It does this by encapsulating the spray chemical.
Droplet Deposition: PROTEC PLUS enables production of more evenly sized droplets, increasing the droplet deposition, thus ensuring a uniform coverage of the target.
Non-Phytotoxic: As PROTEC PLUS is a natural product, it is less phytotoxic than mineral oils, therefore making it safer to spray on a wider range of crops.
Protec Plus Is Registered For Use With The Following Products:
Select* & other clethodim 240EC products
Topik*
700 g/kg imazethapyr products:
It is also commonly used with these products:
Situation | Rate | Critical Comments |
Broadacre & boom spray | 200ml – 1L / 100L water | Use the lower rate when using low application rate products |
Aerial, CDA or ULV | 200ml – 2L/Ha | |
Hand Gun (spot spraying) | 150ml – 300ml / 100L water | |
Knapsack | 15ml – 20ml / 10L water | |
Tree orchard plantation spraying (High volume) | 100ml – 200ml / 100L water |


