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Does the "manure" from earthworms have to meet the same
criteria as other
manures?
No. According to the NOSB Compost Task Force, earthworm castings
are “finely divided organic material produced non-thermophilically
due to interactions between aerobic microorganisms and earthworms,
as organic material passes through the earthworm gut.” It
makes no sense that earthworm castings would have to meet the same
requirements as manure. Otherwise, it would be a violation of the
regulation to have earthworms defecating in your soil less than
120 days prior to harvest of a crop for human consumption if the
crop contacts the soil.
The manure requirements at §205.203.c.1 do not apply to earthworm castings, as the language specifically says “animal and plant materials include: 1) Raw animal manure, which must be composted.” The NOP definition of manure describes “excreta from livestock”, which does not apply to invertebrates such as earthworms that are either native or used in soil building processes, and not raised “for food or in the production of food.”
from
Categories: Organic, Atlanta and Metro Atlanta Worms, Georgia Gardening
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