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Arable Farming
Cropping
P and K
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<blockquote data-quote="ollie989898" data-source="post: 5892814" data-attributes="member: 54866"><p>Yara use inductively coupled mass spectrometers, I have seen them with my own eyes, and they are needed because they are often asked to provide all kinds of data on soil samples, testing for heavy metals and so forth, the chap in charge explained that with their equipment they can test for anything in a sample right up to the really heavy elements like uranium. I guess using wet chemistry constantly to test thousands of soil samples and aiming to deliver a broad spectrum test with a dozen measurements for each just isn't possible in the required timeframe and cost.</p><p></p><p>I have asked them the exact same question myself. I also asked if it mattered what form nutrients may be in, along with the question of can soil samples be too wet for them to analyse and was told it didn't make any difference. The whole lot gets put into an oven before getting anywhere near any analysis equipment and is then ground literally into dust, I presume leaving a lot of stones in the sample might then cronk your results. I guess the same may be true of leaving any kind of extraneous organic matter in there. The bit I am not so sure of is how they get from a pile of dust, a solid form, into a liquid form that is then pumped into the mass spectrometer. It was explained at the time but I can't remember.</p><p></p><p>A significant portion of the work they do is done in the summer, prior to other crops being planted.</p></blockquote><p></p>
[QUOTE="ollie989898, post: 5892814, member: 54866"] Yara use inductively coupled mass spectrometers, I have seen them with my own eyes, and they are needed because they are often asked to provide all kinds of data on soil samples, testing for heavy metals and so forth, the chap in charge explained that with their equipment they can test for anything in a sample right up to the really heavy elements like uranium. I guess using wet chemistry constantly to test thousands of soil samples and aiming to deliver a broad spectrum test with a dozen measurements for each just isn't possible in the required timeframe and cost. I have asked them the exact same question myself. I also asked if it mattered what form nutrients may be in, along with the question of can soil samples be too wet for them to analyse and was told it didn't make any difference. The whole lot gets put into an oven before getting anywhere near any analysis equipment and is then ground literally into dust, I presume leaving a lot of stones in the sample might then cronk your results. I guess the same may be true of leaving any kind of extraneous organic matter in there. The bit I am not so sure of is how they get from a pile of dust, a solid form, into a liquid form that is then pumped into the mass spectrometer. It was explained at the time but I can't remember. A significant portion of the work they do is done in the summer, prior to other crops being planted. [/QUOTE]
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