Sheet composting

Sheet composting

Sheet composting is the process of composting organic matter directly onto the soil as a mulch and letting it decay there,rather than in a heap. Most commonly, this is achieved by sowing a 'green manure' crop such as mustard, alfalfa,or buckwheat, which is then hoed in, preferably just before flowering. This practice can cause temporary nitrogen depletion, but this can be reduced by employing leguminous green manure crops such as lupin, winter tares, field beans, or clover, which are able to fix their own nitrogen supply in root nodules. The nitrogen is then released as the plants decay.

Proponents of this system argue that sheet composting causes fewer nutrients to be lost throughleaching than heap methods, also that fresh organic matter provides a slower release of minerals when appliedthan when decayed. It is also said that, in the long term, sheet composting leads to higher nitrogen levels in thesoil, as much is lost by vaporisation when a traditional heap heats up.

ee also

*Container composting
*German mound
*Leaf mold
*High fibre composting
*Worm compost
*Spent mushroom compost
*Sheet mulching


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