Generic Materials Search: seaweed and seaweed products

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View the OMRI Generic Materials List Glossary in PDF format here.
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Seaweed and Seaweed Products
Allowed
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Synthetic/Nonsynthetic
Nonsynthetic extractants are allowed. Synthetic extraction process is limited to the use of potassium hydroxide or sodium hydroxide; solvent amount used is limited to that amount necessary for extraction. Aquatic plant products are prohibited if they contain synthetic preservatives such as formaldehyde, or are fortified with otherwise prohibited plant nutrient sources. See also AQUATIC PLANT PRODUCTS listings and GROWTH REGULATORS FOR PLANTS. See Glossary for definition of "seaweed."