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Never Plough Snow Under
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<blockquote data-quote="Simon C" data-source="post: 4861028" data-attributes="member: 319"><p>It is damage to the soil biology that is the problem. Very few soil creatures can survive being frozen solid, bacteria, fungi, protazoa or nematodes will all be wiped out. In a normal British winter the top layer may freeze, but everything living below that stays above 0 degrees C will soon re-colonise the top bit when it thaws out and warms up. By ploughing down snow, the whole plough depth could become frozen and so it will take much longer for the any surviving biology to grow back. Since the invention of chemical fertilisers, farmers are not reliant on the soil biology for the major components of nutrition and so this may be no worse than ploughing in the summer when all the biology gets dehydrated to death instead. </p><p></p><p>Our grandfathers would have been highly reliant on biological nutrient cycling to feed their crops, and so the effect of ploughing down snow would have been much more noticeable to them, hence this saying from the past.</p></blockquote><p></p>
[QUOTE="Simon C, post: 4861028, member: 319"] It is damage to the soil biology that is the problem. Very few soil creatures can survive being frozen solid, bacteria, fungi, protazoa or nematodes will all be wiped out. In a normal British winter the top layer may freeze, but everything living below that stays above 0 degrees C will soon re-colonise the top bit when it thaws out and warms up. By ploughing down snow, the whole plough depth could become frozen and so it will take much longer for the any surviving biology to grow back. Since the invention of chemical fertilisers, farmers are not reliant on the soil biology for the major components of nutrition and so this may be no worse than ploughing in the summer when all the biology gets dehydrated to death instead. Our grandfathers would have been highly reliant on biological nutrient cycling to feed their crops, and so the effect of ploughing down snow would have been much more noticeable to them, hence this saying from the past. [/QUOTE]
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