Rehabilitate Soil Exposed by Infrastructure Projects
Infrastructure projects, should be rehabilitated immediately. Otherwise, the area will be more prone to erosion. Excessive amounts of dust could be a problem, too.
However, restoring such sites to their original condition can be quite a challenge. As you may know, it took native grasslands thousands of years to develop and reach an extensive coverage. Therefore, it is essentially impossible to ensure their complete reproduction in just a very short time. But don’t be disheartened. There are steps you can take to start rehabilitating areas affected by Australian infrastructure projects.
Instead of using introduced grass to cover soil exposed by major land infrastructure projects, it’s best to sow native grasses because they will growin poor conditions and are much easier to maintain. They are considerably cheaper, too. When choosing a seeding mix, it should include rapid establishing grasses such as Windmill grass (Chloris truncata) and Wheat grass (Elymus scaber), as well as slower establishing species such as Kangaroo grass (Themeda triandra) and Wallaby grass (Rytidosperma spp.) for many areas of Australia.
If the site is highly prone to erosion, or if you need to see fast results, a cover crop of a cereal like Ryecorn or Japanese Millet can be sown at 20kg/ha along with native grass mix. They will die off within a few months, but their root system will help hold the soil together and protect the emerging native grass seedlings. ou just need to make sure that the cover crop does not drop seeds on to the ground.
Weed control is also important during the initial stages of the rehabilitation process. Weeds need to be controlled. Otherwise, they could smother the emerging native grass seedlings and steal valuable nutrients from them.
Need help rehabilitating areas affected by infrastructure projects? Contact us at Native Seeds anytime. We can provide you with quality seeding mixes that can help revegetate exposed soil.