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<blockquote data-quote="JRGidaho`" data-source="post: 740794" data-attributes="member: 13410"><p>fargus, I think your math is correct and the 20,000 lb OM is what would have to be added to raise 1%. Next to impossible to grow 20000 lb forage in most of US & Canada, let alone have that much returned to the soil. When I take soil samples, I always scuff away the debris layer on the soil surface (which really isn't humus yet) and put the probe directly into the mineral soil. If you take a sample punching down through the litter layer, you will get an inflated OM reading.</p><p></p><p>Another real easy way to double your organic matter is change from taking 6-8" soil cores to just taking 3-4" cores. The lab will still calculate all your analysis based on the 6" plow layer unless you told them it was a shallow sample.</p></blockquote><p></p>
[QUOTE="JRGidaho`, post: 740794, member: 13410"] fargus, I think your math is correct and the 20,000 lb OM is what would have to be added to raise 1%. Next to impossible to grow 20000 lb forage in most of US & Canada, let alone have that much returned to the soil. When I take soil samples, I always scuff away the debris layer on the soil surface (which really isn't humus yet) and put the probe directly into the mineral soil. If you take a sample punching down through the litter layer, you will get an inflated OM reading. Another real easy way to double your organic matter is change from taking 6-8" soil cores to just taking 3-4" cores. The lab will still calculate all your analysis based on the 6" plow layer unless you told them it was a shallow sample. [/QUOTE]
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