Tech Note Series
Connect with SACOA



Herbicide Adjuvant Guide

ANTIEVAP Spray Adjuvant

ANTIEVAP Spray Adjuvant  ANTIEVAP Label



The problem

The weed management and moisture conservation practice of fallow spraying has been widely adopted by Australian farmers, for winter as well as summer cropping.

Because some broadleaf weeds (such as afghan melons) with hairy and waxy leaf surfaces are hard to wet and penetrate, there has been a requirement to mix knockdown herbicides with highly volatile Phenoxy herbicides.

Phenoxy herbicides such as MCPA, dicamba, 2,4-D and 2,4DB (all Group I) control a wide range of broadleaf weeds relatively cheaply.

Their only disadvantage is that during some adverse climatic conditions, vapour and spray drift can move several kilometres away from the spray target and cause non-target damage to adjacent crops, shelterbelts and diversification tree crops.

The solution

The use of ANTIEVAP Spray Adjuvant (ANTIEVAP) will minimise this by encapsulating the herbicide active in the spray solution and depositing it on the leaf surface in a controlled, uniform size droplet.

Because mineral based spray adjuvants strip the waxy cuticle off the leaf surface, it also assists the active herbicide to penetrate into the plant tissue.

During summer spraying, low water rates with high temperatures and/or low relative humidity can cause rapid evaporation of the spray solution, which may reduce effectiveness.

This is unsatisfactory, as herbicides need a period of time to penetrate the leaf surface to work properly. ANTIEVAP reduces the evaporation rate, allowing the active chemical time to do its job properly in the quickest time possible.

Summer weed management is also effective in reducing fungal spore carry over, from grass weed species to cultivated crops.

Spray Tank Cleanup

Always follow instructions on the herbicide label for decontamination of spray equipment.

For ANTIEVAP: wash out with soapy water, or 1% solution of ammonia followed by several rinses of fresh water.

Crop Safety

  • ANTIEVAP is specifically formulated for use with non-selective herbicides and should never be used with post- emergent selective crop herbicides as crop damage may occur.
  • Please discuss with SACOA staff or refer to our product manual for details on products suitable for use with broadleaf herbicides.
  • Do not add crop oil with tank mixes containing Tordon 75D ® when spraying Sorghum.
  • Always use ENHANCE Spray Adjuvant with Tordon 75D ® at 1L/200L/ha of spray mixture on Sugarcane.
  • Do not use with broadleaf herbicides in cereal crops.
  • Not compatible with wettable sulphur or compounds containing sulphur such as lime sulphur.
  • Do not mix with trace element fertilisers.