VITICULTURE TRELLISING

Waratah manufactures a specific range of products suited to the viticulture and trellising industry.

Gripfast® and Blue Latch trellis posts are designed to be used within the rows to support the weight of the grapes and keep the trellis wire at the desired height.

Growire® trellis wires are a purpose designed and manufactured range of wires for the viticulture industry. Available in 2.65mm, 2.85mm and 3.15mm to suit varying loads and applications, a 2.00mm dripper wire is also available for attaching dripper lines near the base of the trellis assembly. A 2.00mm tomato wire is also available.

Design Considerations

Just like the grapes that are grown on them, there are many varieties of trellis construction in Australian viticulture.  But no matter what type of trellis design you select and employ in your location, the loads that have to be carried by trellis structures are broadly of a similar nature.  There are three basic types, all of which need to be taken into consideration when selecting your trellis design.

Crop Load

This type of load covers all the things that the trellis structure has to support.  It includes not only fruit, shoots and cordons, but also contributing factors such as yield, design of trellis, training methods, pruning and crop management.

Fruit Load

This type of load is defined as the total fruit weight hanging down from the fruiting/foliage wires.  This load is eventually transferred to the trellis post.  In most instances, the surface area of the post and the friction created by it in the soil will prevent the post from sinking.

Wind Load

This type of load is reasonably self explanatory.  It is caused by wind blowing onto the canopy.  Leverage resulting from the action of the wind is the most common cause of post failure.  There are many factors that can have a bearing on trellis structure performance which is subject to wind loading.  Factors that can affect your choice of trellis design include trellis height, expected weight of foliage and application of additional wind loads such as bird netting.

As a general rule, on areas of the trellis that are most susceptible to wind damage, Waratah recommends not joining coils of wire and spacing your trellis posts closer together.  This will ensure a stronger trellis and help prevent against wind damage.

Wind exposure data obtained from Meterology Department

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Influencing Factors For Wind Load

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Waratah Products Used In A Trellis System

Trellis Product Guide

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Cost Considerations

When choosing the material for your trellis it is important to consider all the factors that may have a bearing on costs.

Product Choice

Poor quality materials tend to perform inefficiently and result in significant repair and maintenance costs.  The cost difference between ineffective materials and a high-quality steel will quickly outweigh on the cost of breakages, repairs and maintenance.

Using a high-quality trellis wire will lengthen the life of your trellising system.  By pairing a Waratah Longlife wire with another Waratah product, such as a Jio, Gripfast or Blue Latch TM trellis post, the wire will outperform wire fixed firmly by staples.

Maintenance

The profile of Waratah posts has been designed to lower the susceptibly of breakages from machinery. If replacement posts are required, a Waratah post is ideal as it can be integrated with various trellisinig layouts, including timber.

Installation

In comparison to timber, steel posts are lighter and have a smaller profile, this means that all Waratah products can be handled by one person and do not require digging or the use of heavy machinery to install.  The various wire attachments and post designs, makes installing a Waratah trellis system quick and simple.

Why Waratah?

Waratah is the only Australian manufacturer controlling every step in the process, from mining the ore, smelting the steel, casting the billet, through to rolling the rod and then drawing and galvanizing the wire to Waratah's exacting standards.

Recyclable

All Waratah wire, posts and strainers are 100% recyclable.  They can be sold to recyclers after their lifespan.  Don't be left with a stockpile of old Copper Chrome Arsenic (CCA) timber posts that are difficult to dipose of.

Organic

Using a combination of Waratah posts, wire, strainers and stays will ensure that your trellis system ticks all the boxes to gain organic certification, unlike treated timber which is prohibited to be used on an organic property.

Versatile

All Waratah products can be used in new trellis designs or can be added to a pre-existsing trellis design.  The versatility of all Waratah's products means that there is an effective solution available to suit your crop and conditions.