Here are the NOP regulations.
http://www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELPRDC5060370&acct=nopgeninfo
Private certification groups such as OMRI may have stricter standards for certification.
Jim
http://www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELPRDC5060370&acct=nopgeninfo
Private certification groups such as OMRI may have stricter standards for certification.
Jim