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EPA issues Draft Guidance for Plant Regulator Label Claims, Including Plant Biostimulants
May 6, 2019
Recently the Environmental Protection Agency (EPA) issued a draft guidance document to better define Plant Biostimulants as regulated substances under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). HPTA members are encouraged to read the document and submit a public comment directly to the open docket on the website.

EPA Draft Guidance – In general, a draft guidance document is needed and welcomed by the biostimulant industry as a whole.  However, the proposed changes to humic and fulvic acid could significantly impact the humic and fulvic acid industry. The EPA Draft Guidance document is now open for public comments.   (Important Update: The EPA has extended the comment period to July 28, 2019Your voice matters!)

For additional information including how to register comments; please see this HPTA Member communication from Humic Products Trade Association President; Russell D. Taylor.
EPA issues Draft Guidance HPTA Comment

HPTA Member Exclusive:  Important supplemental documents can be found in the Members Area of  (If you are a current HPTA Member and need help with your login, contact

New Farm Bill lays the ground work for Humic Substances
Dec. 21, 2018 – Last week the US House of Representatives passed the Senate Farm bill. Included in the farm bill was key language laying the groundwork for defining “plant biostimulants” in the United States While there is still work to be done with the USDA, this piece of legislation will help provide the framework needed in the agriculture industry to define and shape the biostimulant industry and further the growth of humic substance sales.

Humic Products Trade Association Test Method
July 2018 – ISO Approves HPTA Test Method as an International Standard

Humic & Fulvic Acids – Standardized Test Method Information



Acres 2019 Eco-Ag Conference and Trade Show
December 9-12, 2019
Hyatt Regency Minneapolis
Minneapolis,  Minnesota


Journal of Soils and Sediments / Humic Products in Agriculture: Potential Benefits and Research Challenges – a Review

Biochar and Humic Substances: A Comparison


HPTA Board Meetings: Teleconferences are generally held the second Tuesday of the month at 2 p.m. Central time.
Upcoming meeting:  Tuesday, October 8th, 2019 at 10:00 am CT.

November 15, 2010,  HPTA Formation

Humic Products Trade Association Newsletters
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