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3 Liquid Fertilizers Prohibited in Organic Production

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Ruling made by the NOP prohibits liquid fertilizers previously allowed in organic production.

February 20, 2009

The National Organic Program (NOP) has notified Accredited Certifiers that confidence has been lost in two liquid fertilizer products previously used in organic production systems.  The following products have also been classified as prohibited materials by the Organic Materials Review Institute (OMRI).  Oregon Tilth is requiring that all organic producers cease use of the following two products immediately:

Marizyme™ (manufactured by Port Organic Products)
Agrolizer™ (manufactured by AgroMar, Inc.)


In addition, OMRI has also classified the following material, previously allowed on the OMRI list, as now prohibited:

Alaska® Fish Fertilizer 5-1-1 (manufactured by Lilly  Miller Brands)

Oregon Tilth clients are instructed to immediately cease use of and do not purchase or use any of these three products.


Inspectors will be following up at inspection to ensure discontinuation of these products has occurred.
Please also note that these products cannot be disposed of into compost or other materials that would be used as a soil amendment in an organic production system.  This would not be allowed as prohibited materials are not allowed to be ingredients in or a soil amendment in organic production.

Please contact Kristy Korb (kristy@tilth.org) or Tiffanie Huson Labbe (tiffanie@tilth.org) at 503.378.0690 with any questions regarding this issue.  Thank you for your cooperation.

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