I 
119TH CONGRESS 
1ST SESSION H. R. 3783 
To amend the Federal Insecticide, Fungicide, and Rodenticide Act to provide 
for a consistent definition for plant biostimulants. 
IN THE HOUSE OF REPRESENTATIVES 
JUNE 5, 2025 
Mr. PANETTA (for himself and Mr. BAIRD) introduced the following bill; which 
was referred to the Committee on Agriculture 
A BILL 
To 
amend 
the 
Federal 
Insecticide, 
Fungicide, 
and 
Rodenticide Act to provide for a consistent definition 
for plant biostimulants. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Plant Biostimulant 
Act of 2025’’. 
SEC. 2. DEFINING PLANT BIOSTIMULANTS. 
(a) IN GENERAL.—Section 2 of the Federal Insecti-
cide, Fungicide, and Rodenticide Act (7 U.S.C. 136) is 
amended— 
VerDate Sep 11 2014 
02:03 Jun 07, 2025
Jkt 059200
PO 00000
Frm 00001
Fmt 6652
Sfmt 6201
E:\BILLS\H3783.IH
H3783
ssavage on LAPJG3WLY3PROD with BILLS
(1) by striking subsection (v) and inserting the 
following: 
‘‘(v) PLANT REGULATOR.— 
‘‘(1) IN GENERAL.—The term ‘plant regulator’ 
means any substance or mixture of substances in-
tended, through physiological action, for accelerating 
or retarding the rate of growth or rate of matura-
tion, or for otherwise altering the behavior, of plants 
or the produce thereof. 
‘‘(2) EXCLUSIONS.—The term ‘plant regulator’ 
does not include— 
‘‘(A) substances to the extent that they are 
intended as plant nutrients, trace elements, nu-
tritional 
chemicals, 
plant 
inoculants, 
soil 
amendments, or vitamin hormone products; or 
‘‘(B) plant biostimulants that— 
‘‘(i) are of biological origin; or 
‘‘(ii) include chemical compounds that 
are synthetically derived, but are struc-
turally similar and functionally identical 
to, substances of biological origin.’’; 
(2) in subsection (hh)— 
(A) in paragraph (2), by striking ‘‘or’’ at 
the end; 
(B) in paragraph (3)— 
VerDate Sep 11 2014 
02:03 Jun 07, 2025
Jkt 059200
PO 00000
Frm 00002
Fmt 6652
Sfmt 6201
E:\BILLS\H3783.IH
H3783
ssavage on LAPJG3WLY3PROD with BILLS
(i) in the matter preceding subpara-
graph (A), by striking ‘‘substances.’’ and 
inserting ‘‘substances’’; and 
(ii) in subparagraph (B)— 
(I) by inserting ‘‘, or’’ after ‘‘vol-
atilization’’; and 
(II) by striking the period at the 
end and inserting a semicolon; and 
(C) by inserting before the undesignated 
matter following paragraph (3) the following: 
‘‘(4) a plant biostimulant; or 
‘‘(5) a nutritional chemical.’’; and 
(3) by adding at the end the following: 
‘‘(pp) PLANT BIOSTIMULANT.—The term ‘plant bio-
stimulant’ means a substance, microorganism, or mixture 
thereof, that, when applied to seeds, plants, the 
rhizosphere, soil, or other growth media, act to support 
a plant’s natural processes independently of the nutrient 
content of that substance, microorganism, or mixture 
thereof, and that thereby improves— 
‘‘(1) nutrient availability, uptake, or use effi-
ciency; 
‘‘(2) tolerance to abiotic stress; and 
‘‘(3) consequent growth, development, quality, 
or yield. 
VerDate Sep 11 2014 
02:03 Jun 07, 2025
Jkt 059200
PO 00000
Frm 00003
Fmt 6652
Sfmt 6201
E:\BILLS\H3783.IH
H3783
ssavage on LAPJG3WLY3PROD with BILLS
‘‘(qq) NUTRITIONAL CHEMICAL.—The term ‘nutri-
tional chemical’— 
‘‘(1) means any substance or mixture of sub-
stances that interacts with plant nutrients in a man-
ner which improves nutrient availability or aids the 
plant in acquiring or utilizing plant nutrients; and 
‘‘(2) includes some plant biostimulants. 
‘‘(rr) VITAMIN HORMONE PRODUCT.—The term ‘vi-
tamin hormone product’ means a product consisting of a 
mixture of plant hormones, plant nutrients, inoculants, or 
soil amendments.’’. 
(b) REGULATIONS.—Not later than 120 days after 
the date of the enactment of this Act, the Administrator 
of Environmental Protection Agency shall revise the regu-
lations under subchapter E of chapter I of title 40, Code 
of Federal Regulations (as in effect on the date of the 
enactment of this Act) to carry out the amendments made 
by subsection (a). 
SEC. 3. SOIL HEALTH STUDY. 
(a) STUDY.—The Secretary of Agriculture (referred 
to in this section as the ‘‘Secretary’’) shall conduct a study 
to assess the types of, and practices using, plant biostimu-
lants (as defined in section 2 of the Federal Insecticide, 
Fungicide, and Rodenticide Act (7 U.S.C. 136), as added 
by section 2 of this Act) that best achieve the following: 
VerDate Sep 11 2014 
02:03 Jun 07, 2025
Jkt 059200
PO 00000
Frm 00004
Fmt 6652
Sfmt 6201
E:\BILLS\H3783.IH
H3783
ssavage on LAPJG3WLY3PROD with BILLS
(1) Increasing organic matter content. 
(2) Reducing atmospheric volatilization. 
(3) Promotion of nutrient management prac-
tices. 
(4) Limiting or eliminating runoff or leaching 
of soil or nutrients such as phosphorus and nitrogen 
into groundwater or other water sources. 
(5) Restoring beneficial bioactivity or healthy 
nutrients to the soil. 
(6) Aiding in carbon sequestration, nutrient use 
efficiency, and other climate-related benefits. 
(7) Supporting innovative approaches to im-
proving agricultural sustainability, including the 
adoption of performance-based outcome standards 
and criteria. 
(b) REPORT.—Not later than 2 years after the date 
on which funds are first made available to conduct the 
study under subsection (a), the Secretary shall make pub-
licly available, and submit to the Committee on Agri-
culture of the House of Representatives and the Com-
mittee on Agriculture, Nutrition, and Forestry of the Sen-
ate, a report that describes the results of the study. 
Æ 
VerDate Sep 11 2014 
02:03 Jun 07, 2025
Jkt 059200
PO 00000
Frm 00005
Fmt 6652
Sfmt 6301
E:\BILLS\H3783.IH
H3783
ssavage on LAPJG3WLY3PROD with BILLS