Oil Based Spray Adjuvants

Pesticide Spraying

Oil spray adjuvants can be broken into sub-groups. Oldest technology is represented by mineral oil spray adjuvants. More recent developments include canola oil spray adjuvants.

The newest technology includes what are known as the “Esterified canola oil” spray adjuvants. These include Protec Plus, Promax and others.

There are a range of qualities amongst these products, with some products specifying only “vegetable oils”. Some products may use old cooking oils that may be heat affected.

Esterified Canola Oil Adjuvant/Penetrants

Protec Plus®

An esterified canola oil based spreader sticker and penetrant with non-ionic wetting agent included. It maximises the performance of herbicide, fungicide and insecticide sprays by increasing droplet deposition, droplet spread and uptake into the target.

It aids the formation of uniformly sized spray droplets to reduce water evaporation and therefore minimise drift. Trials have shown that rainfastness can occur within 20 minutes.

Protec Plus is non-phytotoxic at recommended rates and is compatible with most commonly applied sprays.


Promax is also based on esterified canola oil, but includes a superior premium surfactant package that makes it suitable for use with hard water. It represents an improvement over standard esterified canola oil products such as Protec Plus.

Anecdotal evidence from growers indicates that Promax assists in providing improved control of hard to kill weeds such as Fleabane.

Features and benefits that apply to Protec Plus also apply to Promax. Promax does NOT contain sulphate of ammonia and can be used in-crop with post-emergent sprays.

Protec Oil

Protec Oil is an emulsified vegetable oil spray adjuvant, which is characterised by a long polymer chain structure. Added to this vegetable oil is a new generation emulsifier.

When premixed with your chemicals in the spray tank, that long polymer chain physically binds to chemical droplets, totally encapsulating them.

After this occurs the Protec Oil becomes a primary carrier for the chemical, while water added to the premix in the spray tank becomes the secondary carrier or bulking agent

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Grevillia AG

“There must be a better way.” That was the conclusion reached by businessman and farmer John Lever on his cattle property “Grevillia”.


10 Bult Dr,
Brendale QLD 4500

Phone Number

(07) 3205 1788

Customer Service

Australia: 1300 669 556
New Zealand: 0508 473 845