Agrimm Technologies Ltd

Vinevax Bio-Dowel

Vinevax Bio-Dowel
Trichoderma Dowel for Grapevine Trunk Disease.

Vinevax Bio-Dowels are a cost effective long term treatment for your vines.

Each Bio-dowel contains proprietary Trichoderma strains formulated as a slow-release implant for the prevention and treatment of diseases caused by wood-invading trunk pathogens in grapevines and fruit trees.

Vinevax Bio-dowels are registered for activity against Eutypa lata, botryosphaeria stevensii and silver leaf (chondrostereum purpureum).

Protection of healthy vines
Drill a hole at a slight upward angle 28mm deep x 6mm diameter into the trunk below the cordon and insert one Bio-implant.

Treatment of diseased vines
For mild disease which only affects the cordon: Drill the hole into clean trunk wood below the cordon and insert 1 Bio-implant.  Cut-off affected cordon wood.

For severe disease which has spread into the main trunk
Drill the hole into clean wood as close as possible to ground level or 25 to 50mm below the position of a water shoot suitable for reconstruction of the vine.

Apply 1 Bio-implant per vine.

Tips for Use
Avoid treatment during sap flow in late winter/early spring.

Vinevax Bio Dowel Logo White

What is it and how does it work?

What is it?

Vinevax Bio-Dowels are a small wooden dowel inoculated with Trichoderma spores. Only 25mm long and 6mm wide, they are inserted into the trunk of the vine and tapped flush with the bark, The dowel is in contact with the vascular system where the spores migrate and colonise around the site. Over time the bark regrows over the site and encapsulates the implant.

How does it work?

Vinevax Bio-Dowels have been shown to colonise around the parenchyma cells of the vine pith where they inoculate the grapevine tissue and stimulate the natural defense mechanisms throughout vine.

This produces a “vaccination” effect that enables the vine to become more resistant to, and better able to cope with, disease and divert its energy into grape production.

Vinevax Bio-Dowels protect vines from infection by pathogens causing vascular trunk diseases such as Eutypa die-back that lead to production losses and eventual vine death. 

Numerous case studies have proven the cost benefit of bio-dowels. Application of the dowel reduces the expression of vascular trunk diseases and this improves vine health, longevity and productivity ensuring that your investment will be paid back many times over. Apply once to to protect vines for at least 5 years.

Vinevax Bio-Dowels are BioGro and ACO registered and as such there are no MRL’s or withholding periods.

Vinevax Bio-Dowels are also one of the only effective treatments on the market for Silver leaf control in orchard or ornamental trees. Affected deadwood should be cut back and dressed with Vinevax pruning wound dressing then dowels applied to the affected branches at the trunk junctions. 

Key Features

Registered for the control of Eutypa, Botryosphaeria and Silver Leaf

Proven Cost Effective

5 years of Trunk Disease Protection

No Residues or Withholding Periods

Trial Results

The true cost of Eutypa Dieback

Eutypa dieback, caused by the fungus Eutypa lata, is a major disease of grapevines worldwide and causes considerable economic loss to the wine industry.

The fungus infects exposed pruning wounds, colonising the cordons and trunk resulting in stunted shoots and disfigured and uneven bunches and eventually death of the vine.

Once established in vines, the only method of controlling Eutypa dieback is through the removal of all infected wood tissue using remedial surgery.

In 1999, Trevor Wicks reported yield losses in Shiraz vineyards could be up to 1500kg/ha which might conservatively be valued at $3000 NZD.

Vinevax Bio-Dowels can be used at all stages of disease expression to promote vine health.

Increased vine vigour

In multiple trials conducted at major Australian vineyards consistent yield benefits were measured. In these trials, a single dowel was used per vine and the vines were assessed over a period of 3 years.

At Taylors, 30 vines were assessed from each of 6 rows and compared to control rows. Increases in treated vines were measured in average bunch numbers per vine and per row and in the weight of these bunches.

This clearly led to increases in yields and this trend was replicated at Kaesler and Henschke as you can see in the graph below.

Yield was at least 20% higher in treated rather than in the untreated vines.

Untreated on the left, treated on the right.
Vinevax Bio-dowel® improves vine vigour.

% increase in yield/vine two years after treatment

Grapevine health after vine reconstruction

In cases of severe Eutypa dieback, it can be necessary to remove the original trunk to eliminate all infected tissue. A single Vinevax Bio-Dowel, placed at the base of a watershoot trained up to form a new canopy, protects the new growth.

This method limits any loss of production through the reconstruction process.

Four years later, the health of reconstructed vines was graded on a scale of 0 to 3, clear of symptoms (0), right through to yellowing or stunting and finally death (3).

The benefits of using the dowel were clear at this point.

96% of treated vines were found to still be clear of disease and this compared to only 10% of vines in the untreated areas.


% of vines

Symptom reduction

In mild cases of Eutypa dieback (i.e., main trunk removal not needed), Vinevax Bio-dowels can still be applied to increase vine vigour, yield per vine and total bunches. 

In one study using symptomatic vines treated with VineVax Bio-dowels, disease severity was graded on a scale of 0 to 5, ranging from health to dead vine.

VineVax Bio-Dowels improved the general health of the vineyard.

The trend was for the treated vines to show less symptoms over time, whereas the untreated vines continued to deteriorate or indeed die.

% of vines