Mix with diesel or Biosafe (these act as penetrants) and apply as a basal bark or cut stump application. Access is NOT designed to be mixed with water.
Both the basal bark and cut stump application methods should be applied at very low pressures from the knapsack and the nozzle adjusted to very coarse, to a point where the mixture will stream/dribble out and not spray or mist.
a) Basal bark application:
Using a knapsack or small pressure sprayer, apply the spray mix to the stems or trunk of the target weed from the ground up to a height of 30 cm (the base, hence basal bark). Ensure that the entire circumference of the stems or trunk is treated.
Ensure that the sprayed surface is wet to the point of run-off. Where possible, ensure buds at or below the soil surface are treated.
For weeds with multiple stems, ensure each one is treated around the entire circumference.
Basal bark treatment is generally effective when weed stems are up to 5 cm in diameter. When stem diameter exceeds 5 cm, a cut stump application is recommended.
b) Cut stump application:
First, cut the tree/sapling leaving an exposed stump. Ideally the cut stump surface will be horizontal to the ground to prevent chemical run-off. Using a knapsack or small pressure sprayer, apply the spray mix to the cut surface of the trunk, the sides of the stump and any roots above the soil surface.
It is important that the spray mix be applied immediately after the stem is cut to maximise the penetration into the stump.
Ensure that the sprayed surfaces are thoroughly wet.
Videos demonstrating the correct techniques for both basal bark and cut stump applications can be accessed here.
c) Thinline application:
Videos demonstrating the correct technique for thinline application can be accessed here.
Equipment Required for Application
- Suitable knapsack or small pressure pump spray unit.
- Measuring jug.
- Cotton overalls or long-sleeved shirt and long trousers.
- Washable hat.
- Elbow-length neoprene gloves.
- Safety glasses or face shield.
Application Timing for Best Results
Access is most effective when applied to weeds that are not stressed due to lack of moisture, excessive heat, previous herbicide treatment, etc. and are actively growing. Actively growing weeds will draw the chemical into the vascular system and transport it down to the roots to ensure maximum efficacy. Provided the target weeds are not stressed, application of Access via either treatment method can occur throughout the year.
A general guide to the best time of the year to treat common woody weeds can be found in this table.
To ensure maximum penetration, do not apply an Access mix to charcoal-coated or wet stems as this will compromise penetration and minimise efficacy.
Always check the label for the correct rate. A copy of the label can be accessed here.
Only mix Access with diesel or Biosafe. Never mix Access with water.
Correct Mixing Procedure
Only mix Access with diesel or Biosafe.
Quarter fill the spray unit with diesel or Biosafe then add the Access. Complete the filling with diesel or Biosafe and agitate well.
Only mix enough Access for each day’s work and use the mix within 24 hours.