Senate Bill 78
The distribution and labeling of fertilizers and soil or plant additives produced from manure. (FE)
Topics: Agriculture, Trade and Consumer Protection, Department of, Fertilizer, Recycling
Became law
The governor signed it on Mar 27, 2026. It's .
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Introduced, passed
Feb 26, 2025
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Committee, passed
Approved
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Senate vote, passed
Passed Apr 22, 2025
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Assembly vote, passed
Passed Jan 22, 2026
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Governor, passed
Signed
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Law, here now
2025 Wisconsin Act 121
Latest entry in the official record, Mar 27, 2026: “Published 3-28-2026”
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The same bill was also filed in the Assembly as AB 93. That version died when the session ended.
Terms on this page
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
Cost estimate
A state agency's estimate of what a bill would cost or save.
Official term: Fiscal estimate. More in the glossary
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote. More in the glossary
What it does
Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.
This bill makes the following changes to requirements that apply to fertilizers and soil or plant additives that are produced from converting manure into compost or vermicompost and their derivatives:
1. The bill allows a person to distribute a fertilizer that is produced from converting manure into compost or vermicompost and their derivatives and that has a combined weight of nitrogen, phosphorus, and potassium that is less than 24 percent of the total weight of the fertilizer. Current law requires a fertilizer distributed in this state to be guaranteed to contain a combined weight of nitrogen, phosphorous, and potassium that is at least 24 percent of the total weight of the fertilizer, unless either 1) the Department of Agriculture, Trade and Consumer Protection promulgates a rule exempting the fertilizer; or 2) DATCP grants a permit authorizing the distribution of the fertilizer as a nonagricultural or special-use fertilizer.
Read the full summary Show less
2. The bill also exempts a fertilizer that is produced from converting manure into compost from being required to contain a minimum amount of certain plant nutrients. Additionally, under the bill, a label, invoice, or statement accompanying fertilizer produced from converting manure into compost is allowed to represent the amount of plant nutrients or other beneficial substances contained in the fertilizer if the truthfulness of the representation is substantiated by a typical analysis or other scientifically validated analytical method.
3. Under the bill, DATCP may not require a controlled experimental field test to substantiate the efficacy and usefulness of a soil or plant additive produced from converting manure into compost. Under current law, DATCP may require the efficacy and usefulness of a soil or plant additive to be substantiated by controlled experimental studies using the soil or plant additive.
4. The bill allows the truthfulness of a statement on a permit application or label of a soil or plant additive produced from converting manure into compost to be substantiated by a typical analysis. Current law requires the label of a soil or plant additive to make a guarantee about the minimum amount of the substances that it contains.
Who's behind it
André Jacque, a Republican, is its .
6 more lawmakers .
See all 7 names Hide the names
Author (1)
- André Jacque · Republican, Senate
Signed on in support (6)
- Elijah Behnke · Republican, Assembly
- Vinnie Miresse · Democrat, Assembly
- Dave Murphy · Republican, Assembly
- Jeff Mursau · Republican, Assembly
- Lisa Subeck · Democrat, Assembly
- Ron Tusler · Republican, Assembly
What it would cost
State agencies filed a . Each opens as a PDF from the Legislature.
How lawmakers voted
There was one vote on this bill.
Senate Committee on Agriculture and Revenue vote to recommend it
Passed, 8 to 0 · Apr 10, 2025
No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.
Official motion: “Report passage recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0”. Official record · This vote on its own page
What happened
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Mar 27, 2026
The new law was published.
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Mar 27, 2026
The governor signed it. It became 2025 Wisconsin Act 121.
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Mar 26, 2026
Sent to the governor.
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Jan 22, 2026
The Assembly passed it too.
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Jan 22, 2026
1 more representative signed on in support.
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May 27, 2025
Sent to the Assembly Committee on Rules.
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Apr 22, 2025
The Assembly received it.
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Apr 22, 2025
The Senate passed it.
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Apr 10, 2025
The committee voted to recommend passing it, 8 to 0.
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Apr 3, 2025
The committee held a public hearing.
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Mar 18, 2025
A state agency sent in its estimate of the cost.
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Feb 26, 2025
Sent to the Senate Committee on Agriculture and Revenue.
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Feb 26, 2025
Introduced in the Senate.
See the official record, word for word Hide the official record
- Feb 26, 2025 · Senate
Introduced by Senator Jacque; cosponsored by Representatives Mursau, Behnke, Murphy, Subeck and Tusler
- Feb 26, 2025 · Senate
Read first time and referred to Committee on Agriculture and Revenue
- Mar 18, 2025 · Senate
Fiscal estimate received
- Apr 3, 2025 · Senate
Public hearing held
- Apr 10, 2025 · Senate
Executive action taken
- Apr 10, 2025 · Senate
Report passage recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0
- Apr 10, 2025 · Senate
Available for scheduling
- Apr 18, 2025 · Senate
Placed on calendar 4-22-2025 pursuant to Senate Rule 18(1)
- Apr 22, 2025 · Senate
Read a second time
- Apr 22, 2025 · Senate
Ordered to a third reading
- Apr 22, 2025 · Senate
Rules suspended to give bill its third reading
- Apr 22, 2025 · Senate
Read a third time and passed
- Apr 22, 2025 · Senate
Ordered immediately messaged
- Apr 22, 2025 · Assembly
Received from Senate
- May 27, 2025 · Assembly
Read first time and referred to committee on Rules
- Jan 20, 2026 · Assembly
Placed on calendar 1-22-2026 by Committee on Rules
- Jan 22, 2026 · Assembly
Rules suspended to withdraw from calendar and take up
- Jan 22, 2026 · Assembly
Read a second time
- Jan 22, 2026 · Assembly
Representative Miresse added as a cosponsor
- Jan 22, 2026 · Assembly
Ordered to a third reading
- Jan 22, 2026 · Assembly
Rules suspended
- Jan 22, 2026 · Assembly
Read a third time and concurred in
- Jan 22, 2026 · Assembly
Ordered immediately messaged
- Jan 22, 2026 · Senate
Received from Assembly concurred in
- Jan 28, 2026 · Senate
Report correctly enrolled
- Mar 26, 2026 · Senate
Presented to the Governor on 3-26-2026
- Mar 27, 2026 · Senate
Report approved by the Governor on 3-27-2026. 2025 Wisconsin Act 121
- Mar 27, 2026 · Senate
Published 3-28-2026
Terms on this page
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
Cost estimate
A state agency's estimate of what a bill would cost or save.
Official term: Fiscal estimate. More in the glossary
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote. More in the glossary
From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor
Cost estimate
A state agency's estimate of what a bill would cost or save.
Official term: Fiscal estimate
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote