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Aussies Living Simply

not the only crisis

Viewing 13 posts - 1 through 13 (of 13 total)
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  • #254253

    am interested in ‘closing the cycle’ of fertiliser loss and sought ways to do this by recycling human waste. found a site dedicated to this called http://www.ecosanres.org

    stats on this site indicate world phosphorous supplies will be exhausted within 50 years, and I understand a worse state of affairs exists with potash (ours comes from canada).

    I note the irony … a double whammy … that we may end up using what oil reserves remain to search for new sources of fertilizer to grow our food!

    #488307
    edensgateedensgate
    Member

    http://www.abc.net.au/news/stories/2010/09/24/3020895.htm

    Australia is already trialing the manufacture of fertilisers from human sewerage, and has been perfecting it for some years now.

    #488308
    Lady BeeLady Bee
    Keymaster

    I remember back in the late 80s, early 90s there was a product called Envirosoil which was made from human waste. Looked at using it on a vineyard at the time but it had too much heavy metal.

    #488309
    slipknotslipknot
    Member

    not sure id call it a crisis

    Fertilisers can be made in many ways that are more natural and less harmfull than what we use now

    really all that will happen is you will see the more natural easy made stuff gradually take over from super ect

    Up our way alot of farmers including us are using dynamic lifter,or fish emoulsion,waste from chook farms or a combination of them with no problems other than changing spreaders to suit

    #488310
    BootstrapperBootstrapper
    Member

    Heavy metal contamination seems to crop up rather often as a reason (excuse?) against using human manure for fertiliser. Where does it come from? Do humans excrete cadmium?

    #488311
    DanHowerDanHower
    Member

    wilburandsally post=302017 wrote: am interested in ‘closing the cycle’ of fertiliser loss and sought ways to do this by recycling human waste.

    Also if we recycle our own waste products, fertilizer production would automatically keep up with population growth

    #488312
    WazzaWazza
    Member

    This is completely off topic, but Wilbur, will we ever get to hear from Sally?

    #488313
    Lady BeeLady Bee
    Keymaster

    Bootstrapper post=302052 wrote: Heavy metal contamination seems to crop up rather often as a reason (excuse?) against using human manure for fertiliser. Where does it come from? Do humans excrete cadmium?

    Don’t know, but the folks who were buying our grapes didn’t want us to use it so we didn’t.

    There was some sort of ‘scare’ yonks ago about some fish had high levels of heavy metals in them – turned people off eating shark etc. for a while. Haven’t heard about that for some years now though.

    DanHower, I like your way of thinking.

    On a slightly related topic – unlike Wazza 😉 – friends of ours have a large dog which, of course, produces large amounts of ‘waste’. I suggested a worm farm where they could turn the waste into something useful for the garden (instead of bagging it and putting in the bin). The look of incredulity and horror on the face was priceless. guess they won’t be doing that!

    #488314
    porgeyporgey
    Member

    I think we are stupid not to overcome the problems of using human waste.

    #488315
    GrumpyGertGrumpyGert
    Member

    We made our own composting toilet to be able to use our own body waste, works fine and no illness’. During all our research we found issues such as illness etc were connected to meat and dairy consuption (animal products) since they are a preffered area of breeding, since we are veggies we bypassed a great deal of issues, but other composting loos seem to be able to deal with it.

    Watered down urine once every 2 or 3 weeks gives a great deal of nitrogen and an acid boost to soils.

    #488316

    I ‘ll ask her for you Waz. would you like a pic too?

    #488317
    GgangGgang
    Member

    We have a composting toilet and use all our own waste with no problems – but we are alo veryaware of any visitors using our toilet. Luckily we dont have many 😆

    We will not eat anything grown using human waste from unknown persons. The biggest problem is contamination with Pharma drugs specially Statins ( cholsterol lowering drugs ) , anti depressants and blood pressure drugs. Even a lot of underground water is contaminated and we will not consider recycled water from sewerage.

    This issue is often ignored but it will cuse major health probelems 👿

    #488318
    roadwarriorroadwarrior
    Member

    slipknot post=302028 wrote: not sure id call it a crisis

    Fertilisers can be made in many ways that are more natural and less harmfull than what we use now

    really all that will happen is you will see the more natural easy made stuff gradually take over from super ect

    Up our way alot of farmers including us are using dynamic lifter,or fish emoulsion,waste from chook farms or a combination of them with no problems other than changing spreaders to suit

    But phosphorus is an essential element that is easily stripped from soils (especially if there are any open loops in the fertilizer/growth/harvesting chain). If you don’t have easy access to cheap phosphorus, then it can’t get into the food chain of chook food or the source of the dynamic lifter in the first place. While fish emulsion will have some phosphorus, it probably won’t have anywhere near enough for healthy plant growth.

    And natural sources can’t be produced in anywhere near enough quantity to supply current populations and food requirement if phosphorus sources begin to get scarce. Its a serious problem that rivals peak oil, but ironically peak oil may solve it for us.

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