Erizon uses innovative techniques grounded in science to deliver effective, environmentally friendly revegetation, dust suppression and erosion control solutions for Australia’s mining, oil & gas, civil and infrastructure projects. View Product Guide Download Capability Statement
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What is Hydromulching?
Hydromulching is a vegetation process that involves spraying a slurry of water, seed, fertiliser, cellulosic mulch, tracking dye and a binder/tackifier on damaged and depleted soils to provide fast, economical and efficient revegetation. Sprayed from a specially designed hydroseeding truck referred to as a hydroseeder, the truck keeps the mixture agitated during application, ensuring even […]
Effective erosion control is crucial to protecting the value and productivity of your land.
Without effective erosion control, the soil is naturally exposed to the physical forces of water runoff. This water strips the valuable topsoil of nutrients and can potentially clog up local waterways, causing algal bloom and widespread ecosystem disruption.
Soil erosion is not only detrimental to the environment but also poses a potential risk of financial loss and land productivity.
So how can you protect your land from soil erosion?
Well, fortunately, there are a variety of erosion control solutions available. By applying some relatively simple solutions, you can control and prevent soil erosion.
Let’s find out how.
First, before learning about the different erosion control solutions, it’s essential that you understand what soil erosion is and the various forces that cause soil erosion. Soil erosion is a naturally occurring process that impacts all land. There are two main types of soil erosion, these include:
Water ErosionWind Erosion
There are other types of erosion, including tillage, but for the sake of clarity, in this article, we will only be considering the two main types of erosion.
Following heavy rain on the soil surface, soil aggregates are broken into smaller pieces, filling the gaps in other soil particles leading to reduced water penetration in the soil. As water can no longer permeate through the soil at a rapid rate, it begins to pool and run along the surface. Over long or steep slopes, vast physical forces of water can be produced which can carve out gullies and effortlessly wash away considerable portions of valuable topsoil. High shear forces can also be a significant issue for batters as they are often relatively steep and a single heavy rain event can cause substantial damage if left unprotected.
Revegetating through hydroseeding and/or hydromulching methods are both practical ways to permanently stabilise soil surfaces, including high incline slopes, and require much less labour and are visually more appealing. Not to mention, once vegetation has established, hydroseeding and hydromulching methods are self-maintaining, provided there is adequate water supply either through moderate rainfall or irrigation. If hydromulching is to be applied during a period of expected high rainfall, the utilisation of a more resilient product such as a Bonded Fibre Matrix or Flexterra should be considered. Both products contain a higher proportion of long mulch fibres and a binding agent, allowing them to become durable against heavy rainfall by forming a hard crust, reducing water run-off.
Blankets and mesh are the obvious erosion control solutions that you are likely to consider. However, blankets and mesh require significant high-risk labour to install and can be quite unsightly. You will also need to consider the cost. Mesh and blanket products can be considerably more expensive than other erosion control methods, especially if you are looking to protect large open areas like an ash dam or farmland.
Alternatively, there is a heavy duty, long term erosion control blanket called GeoSpray. Australian designed and manufactured, this product has been proven to withstand cyclonic conditions, maintaining its structure while remaining porous and allowing water to penetrate to the soil beneath. GeoSpray can be made to be hydrophobic, which will stop any plant growth penetrating through the medium while maintaining erosion control.
Under the right conditions, wind erosion can cause significant losses to your soil and property. Without any protection, strong and sustained winds along with dry soils contribute towards severe soil loss. Aside from the loss of quality topsoil, the movement of soil can be detrimental to your health, the health of others around you, and nearby crops. For these reasons, it’s essential that you have erosion control measures in place. We suggest these two erosion control methods.
Revegetating through hydroseeding or hydromulching is a practical way to stabilise soil surfaces permanently. Vegetation protects soil from wind erosion by reducing the wind speed at the soil surface. Plus, the use of mulch in the initial stages of revegetation helps protect the soil by acting like a solid, impenetrable layer.
Blankets will ultimately cut down the wind speed at the soil surface. However, again, you will need to seriously consider the cost of installation. Blankets are far from, and covering considerable areas requires significant labour.
So, if you think your next project requires erosion control, consider hydromulching, hydroseeding or another spray-on erosion control solution, such as EcoArmour, as a long term and sustainable way to keep your soil where it’s supposed to be.