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Pig and Poultry
Composting with pig slurry...
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<blockquote data-quote="bitwrx" data-source="post: 7249179" data-attributes="member: 86972"><p>Composting a liquid would be quite hard I'd imagine.</p><p></p><p>What kind of slurry are we talking about exactly? What size of pig (grower/finisher, sow, both)? What kind of shed? Straw bedded scrape-through, or slatted?</p><p></p><p>If the latter shed, the DM will be less than 10%. Mixing that with straw or whatever to get something stackable and aerobic would take a lot of straw. Not sure what the C:N ratio would be...</p><p>If you separated it, the solid fraction would stack better, and may be aerobic enough to compost well, but not sure what the C:N ratio would be. But you have to separate it, which costs. And the volume reduction of the liquid fraction is minimal by all accounts, so you still have a load of slurry to deal with.</p><p></p><p>Our neighbour takes wood chippings from the local tree surgeon. They clearly don't rot down on their own, so last time we spread slurry he took a couple of tanker loads of slurry to add to the pile. Not sure it'll work, but I might just call him to find out now.</p><p></p><p>Fwiw, coming at this from a regen angle, the least-worst thing to do may be to dribble bar the slurry directly onto your crops at a low rate. It'll certainly add fertility to your land, and if the rate is low enough you'll probably avoid many of the risks sometimes associated with slurry (bacterial dominant, low aerobic soils, worm kill etc).</p></blockquote><p></p>
[QUOTE="bitwrx, post: 7249179, member: 86972"] Composting a liquid would be quite hard I'd imagine. What kind of slurry are we talking about exactly? What size of pig (grower/finisher, sow, both)? What kind of shed? Straw bedded scrape-through, or slatted? If the latter shed, the DM will be less than 10%. Mixing that with straw or whatever to get something stackable and aerobic would take a lot of straw. Not sure what the C:N ratio would be... If you separated it, the solid fraction would stack better, and may be aerobic enough to compost well, but not sure what the C:N ratio would be. But you have to separate it, which costs. And the volume reduction of the liquid fraction is minimal by all accounts, so you still have a load of slurry to deal with. Our neighbour takes wood chippings from the local tree surgeon. They clearly don't rot down on their own, so last time we spread slurry he took a couple of tanker loads of slurry to add to the pile. Not sure it'll work, but I might just call him to find out now. Fwiw, coming at this from a regen angle, the least-worst thing to do may be to dribble bar the slurry directly onto your crops at a low rate. It'll certainly add fertility to your land, and if the rate is low enough you'll probably avoid many of the risks sometimes associated with slurry (bacterial dominant, low aerobic soils, worm kill etc). [/QUOTE]
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Composting with pig slurry...
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