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Franz Heymann wrote:
:: "Phil L" wrote in message :: ... ::: Arjen wrote: ::::: There is now a test for sale at eBay to test the level of Active ::::: Organic Matter in your soil. The more active OM - the better; ::::: excellent for organic farmers and growers, or for your ::::: allotment. See: ::: ::: ::: They're not really of any use for gardeners or farmers - they are ::: primarilly used by civile engineers and construction companies to ::: find if any organic matter exists in sand and aggregates prior to ::: using them for concrete etc...organic matter will eventually ::: disintegrate, thus leaving the concrete severely weakened...of ::: little importance for a garden path, but immensely important if ::: your building a motorway bridge or multi-storey office block. :: :: That is as maybe. What bothers me is what property of "Active :: Organic Matter" it is which causes it to colour a test liquid. :: Remember, it must be a property common to *all* "Active Organic :: Matter", and absent from all other organic matter, or indeed all :: other matter. :: It is - it matters not what the organic tissue is, whether it's well rotted manure or eggshells, only that it is present and will weaken any concrete made from sand/aggregates - they are useless from a gardeners POV....if you tested it on a kilo of baked beans it would report a 100% organic matter reading - try growing some radishes in it. :-p |
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