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Regenerative Agriculture and Direct Drilling
Regen Ag Crops & Agronomy
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<blockquote data-quote="Brisel" data-source="post: 3344396" data-attributes="member: 166"><p>What method of measuring was this? Loss on ignition? Be careful of reading too much into this. By all means use the figures as a reference point for future sampling to measure a change. Any kind of fresh OM contamination of the sample will skew the results. In calcareous soils you can have some CaCO3 oxidise in the oven which could artificially boost weight loss = higher OM reading. </p><p></p><p>I had SOYL do each field when I had them in for pH/P/K/Mg sampling last year, just on a 1 sample/field basis rather than zonal samples (expensive). Mine varied from 3.9 to 12.1 with most around 5-6%. Unsurprisingly the highest ones were close to an old dairy unit, though this shut down 15 years ago! I've been selling all cereal straw for years until recently with non inversion deep tillage. All in all, it was what I expected. </p><p></p><p>The interesting thing will be to go back in 5 years to see what the change has been due to chopping straw & using cover crops with the Claydon system. </p><p></p><p>What kind of changes have people seen who have been doing strip till/no till for longer?</p><p></p><p>[ATTACH=full]453418[/ATTACH]</p></blockquote><p></p>
[QUOTE="Brisel, post: 3344396, member: 166"] What method of measuring was this? Loss on ignition? Be careful of reading too much into this. By all means use the figures as a reference point for future sampling to measure a change. Any kind of fresh OM contamination of the sample will skew the results. In calcareous soils you can have some CaCO3 oxidise in the oven which could artificially boost weight loss = higher OM reading. I had SOYL do each field when I had them in for pH/P/K/Mg sampling last year, just on a 1 sample/field basis rather than zonal samples (expensive). Mine varied from 3.9 to 12.1 with most around 5-6%. Unsurprisingly the highest ones were close to an old dairy unit, though this shut down 15 years ago! I've been selling all cereal straw for years until recently with non inversion deep tillage. All in all, it was what I expected. The interesting thing will be to go back in 5 years to see what the change has been due to chopping straw & using cover crops with the Claydon system. What kind of changes have people seen who have been doing strip till/no till for longer? [ATTACH=full]453418[/ATTACH] [/QUOTE]
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