tomatoes
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Post by tomatoes on Sept 10, 2020 20:18:23 GMT 10
I have a question for those of you who know a lot more about gardening and soil than I do. I’m looking at a property that is for sale, and it says that the land is classified “class 3 acid sulfate soils”. Can someone tell me what this means in practical terms? Does this mean it is land we should avoid? I would be wanting to plant fruit trees but veg would prob be raised gardens where possible. When I google it the nsw planning gov site says “Class 3: Acid sulfate soils in a class 3 area are likely to be found beyond 1 metre below the natural ground surface.” This site www.environment.nsw.gov.au/topics/land-and-soil/soil-degradation/acid-sulfate-soilsSays it isn’t a problem when not disturbed, but when disturbed it can kill plants and wildlife etc. So class 3 means only 1 m down. Is this a common problem? I don’t recall coming across it before and I’ve looked at quite a few property contracts but I could have just missed it.
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spatial
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Post by spatial on Sept 10, 2020 21:29:11 GMT 10
Acid sulphate soils can be a real problem. Mostly linked to areas with trapped sea water. Ancient Oceanic water has high sulphur and salt content, when dug into and exposed to oxygen it can turn acidic, can destroy concrete foundations. Extremely expensive to deal with.
NSW gov looks at hydrology models, geology etc.. And have come up with proposed areas at risk of acidity. Not a big cost to hand auger down a few metres and take soil samples. Should look into getting soils tested, unfortunately consultants charge crazy prices.
Have only ever dealt with one project that had acid sulphate soils, was a bridge development up on NSW north coast, and a long time ago. Scary stuff best to avoid disturbing those areas.
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Beno
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Location: Northern Rivers
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Post by Beno on Sept 10, 2020 23:37:39 GMT 10
It depends on the existing drainage design as most acid sulfate soils are found on old swamps and lowland floodplains. If the land is not well drained it will either flood or hold water during wet periods which is not good for living on or growing crops. If it is well drained then you can grow stuff. All of northern nsw cane is grown on acid sulfate soils.
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