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Regenerative Agriculture and Direct Drilling
Regen Ag General Discussion
Chopped straw incorporation as a catalyst to kick start soil biology
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<blockquote data-quote="DrWazzock" data-source="post: 5553264" data-attributes="member: 2119"><p>Oxygen required as well, influenced by cultivation? Soil temperature, time of year? Time it takes for the process to work? Trace element particularly manganese lock up by the soil bacteria followed by release. CO2 release?</p><p></p><p>The OP hypothesis is pretty much right IMO, but we are only scratching the surface.</p><p></p><p>Big volumes of chopped straw lying on the surface, wet, without addition of something to aid the decomposition process might be good for carbon sequestration but they aren't good for crop nutrition short term.</p><p></p><p>I have seen subsequent cereal crops nearly starve to death over winter due to N and Mn lockup as the soil bacteria tries to break the straw down, particularly if you add a big dose of oxygen by ploughing it in.</p><p></p><p>Autumn N is banned of course, as DEFRA are still living in 1980.</p></blockquote><p></p>
[QUOTE="DrWazzock, post: 5553264, member: 2119"] Oxygen required as well, influenced by cultivation? Soil temperature, time of year? Time it takes for the process to work? Trace element particularly manganese lock up by the soil bacteria followed by release. CO2 release? The OP hypothesis is pretty much right IMO, but we are only scratching the surface. Big volumes of chopped straw lying on the surface, wet, without addition of something to aid the decomposition process might be good for carbon sequestration but they aren't good for crop nutrition short term. I have seen subsequent cereal crops nearly starve to death over winter due to N and Mn lockup as the soil bacteria tries to break the straw down, particularly if you add a big dose of oxygen by ploughing it in. Autumn N is banned of course, as DEFRA are still living in 1980. [/QUOTE]
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Regenerative Agriculture and Direct Drilling
Regen Ag General Discussion
Chopped straw incorporation as a catalyst to kick start soil biology
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