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Jonnyboy
Joined: 29 Oct 2004 Posts: 23956 Location: under some rain.
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tahir
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Jonnyboy
Joined: 29 Oct 2004 Posts: 23956 Location: under some rain.
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tahir
Joined: 28 Oct 2004 Posts: 45676 Location: Essex
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Jonnyboy
Joined: 29 Oct 2004 Posts: 23956 Location: under some rain.
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jema Downsizer Moderator
Joined: 28 Oct 2004 Posts: 28239 Location: escaped from Swindon
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Dunc
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Legion
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cab
Joined: 01 Nov 2004 Posts: 32429
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Posted: Fri Dec 10, 04 4:39 pm Post subject: |
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Farming is associated with contamination. Live with it.
Farms use manure, other fertilisers, insecticides, herbicides, etc. They use the same soil over and over again, and they have food-handling machinery to get the food from the plant all the way to packing, and eventually to the plate. All of those inputs contain some manner of contamination, as -everything- is contaminated.
That contamination is concentrated by the practice of farming; makes sense, it mostly goes into the soil, gets eaten by soil microbes which use up the bulk of the nirtogen and carbon, leaving trace elements. It's hardly surprising that farming (-any- farming) should be associated with a higher (but still entirely tolerable) concentration of metal ions like lead, nickel, copper, etc.
Think of the soil as being a means for reducing organic mass. Muck goes in, carbon dioxide, comes out, leaving a wonderful organic humus. Everything that was in the muck that can't be turned into a gaseous waste product also remains there until such a point as it gets adsorbed onto a root or suchlike.
It's harmless, and it's happened for as long as there has been agriculture. It's pronably -slightly- worse in inorganic agriculture, where you have more chemical inputs, each of which will have associated contamination, but I wouldn't lose any sleep over it. |
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leebu
Joined: 23 Nov 2004 Posts: 418 Location: east yorkshire
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andrewheywood
Joined: 09 Dec 2004 Posts: 17
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sean Downsizer Moderator
Joined: 28 Oct 2004 Posts: 42219 Location: North Devon
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Treacodactyl Downsizer Moderator
Joined: 28 Oct 2004 Posts: 25795 Location: Jumping on the bandwagon of opportunism
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tahir
Joined: 28 Oct 2004 Posts: 45676 Location: Essex
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andrewheywood
Joined: 09 Dec 2004 Posts: 17
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