USDA Publishes Response to April 2019 NOSB Recommendations

USDA Publishes Response to April 2019 NOSB Recommendations

Final Rule Amends the National List for Organic Crops and Handling

The U.S. Department of Agriculture today published a final rule in the Federal Register to amend the National List of Allowed and Prohibited Substances (National List) based on public input and the April 2018 recommendations from the National Organic Standards Board.

This final rule:

  • Elemental sulfur - already on national list as an insecticide, disease control, soil amendment, treatment of livestock, and livestock housing. Now can also be used for slug and snail control, but prevention must be used first (205.206)
  • Polyoxin D zinc salt may now be used for disease control after prevention has failed and non-synthetic materials prove inadequate.
  • Magnesium chloride - Currently listed as an allowed synthetic for processing. It has been reclassified as non-synthetic and the rule change removes the annotation that it must be "derived from sea water."  It's used as a firming agent in tofu processing and source of magnesium in organic infant formula. It is considered non-synthetic when derived from natural sources (terminal lake brines, subsurface brine deposits, mined mineral deposits, sea water) and manufactured in a way that does not chemically change the substance. This final rule prohibits synthetic forms of magnesium chloride for handling. 

The final rule is effective November 22, 2019.


About the National List

More information on the National List, including how and why substances are added, removed or maintained (via the Sunset Renewal Process) on the National List, is available on The National List page.