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SF 632

A bill for an act providing for programs and regulations related to agriculture, including crop production, animal health, and agricultural processing, providing for powers and duties of the department of agriculture and land stewardship, providing fees, and providing penalties.

2025-2026 Regular Session

SF 632 updates agricultural inputs terminology to “beneficial substances,” centralizes regulation at the state level, and strengthens lab evidence while preserving local preemption

Signed by Governor.
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Bill Summary · SF 632

Summary — SF 632 (Chapter 134, 2025)

Agriculture — Crop production, nutrient application, animal health, veterinary medicine, and agricultural processing

Main purpose

SF 632 is a broad agriculture bill that updates statutory programs and regulatory authorities related to crop production (particularly nutrient and fertilizer/soil inputs), animal health and veterinary medicine, and agricultural processing. It revises definitions, clarifies regulatory responsibility at the Department of Agriculture and Land Stewardship (DALS), updates evidentiary rules for laboratory analyses, and preserves preemption of local regulation for certain fertilizer/soil amendment products. The bill was enacted as Chapter 134 and signed by the Governor on June 6, 2025.

Key provisions and changes

  • Terminology change: replaces the term “soil conditioner” with the defined term “beneficial substance.”
    • “Beneficial substance” is defined to include items such as plant amendments, plant biostimulants, plant inoculants, soil-amending ingredients (and forms), soil amendments, soil inoculants, and compost.
    • The definition expressly excludes pesticides.
  • Expands/clarifies definitions in Chapter 200 (fertilizer and related statutes): updates and standardizes many definitions (e.g., fertilizer, commercial fertilizer, bulk fertilizer, distributor, guaranteed analysis, brand, compost, department) and reorganizes statutory language to reflect the new terminology.
  • Agricultural land definition (Code section 6A.21): clarifies that “agricultural land” includes land with farm residences/outbuildings and land taken out of production for environmental protection or preservation.
  • Laboratory evidence: amends Code section 190C.22 to specify that a sworn statement by the bureau chief of the Iowa laboratory bureau (or the deputy) stating results of an analysis of a sample constitutes prima facie evidence of the correctness of that analysis in contested cases or court proceedings.
  • Regulatory preemption retained and referenced: continues the prohibition on counties/cities passing local rules regulating the use, sale, distribution, storage, transportation, disposal, formulation, labeling, registration, or manufacture of a fertilizer or soil conditioner (now “beneficial substance”) under Code section 200.22.
  • Statutory cross‑references updated: multiple code sections that previously referenced “soil conditioner” or “state chemist” are revised to use the new terms (“beneficial substance,” “bureau chief of the Iowa laboratory bureau”).
  • Broader scope: the enrolled bill text and headings indicate related provisions dealing with pesticide applicator certification, animal health, veterinary medicine, processing, fees, penalties, and DALS powers and duties (full details for every division are in the enacted chapter).

Who is affected

  • Farmers and landowners — changes in definitions and labeling/registration terminology affect inputs they buy and use.
  • Fertilizer/biostimulant/compost manufacturers, distributors and retailers — registration, labeling, and regulatory treatment are clarified and centralized at the state level.
  • County and municipal governments — retained preemption limits local regulation of fertilizers/beneficial substances.
  • DALS and Iowa laboratory bureau — receive clarified authority/responsibility and evidentiary role for lab analyses.
  • Applicators (commercial/public/private) and agricultural processors — affected by changes across pesticide and processing-related statutory sections included in the chapter.

Procedural history and status

  • Introduced: April 21, 2025.
  • Passed Senate: April 29, 2025 (yeas 48, nays 0).
  • Passed House (substituted for HF 998): May 8, 2025 (yeas 84, nays 0).
  • Enrolled, delivered to Governor, and signed: June 6, 2025. Now enacted as Chapter 134 (2025).

Practical implications / notes

  • The bill modernizes statutory language to reflect evolving product categories (e.g., biostimulants, inoculants) and centralizes regulatory authority at the state level, reducing potential local variation.
  • The evidentiary change strengthening lab reports as prima facie evidence may streamline enforcement and adjudication involving product samples.
  • Stakeholders in manufacturing, labeling, and distribution should review the revised definitions and compliance obligations in Chapter 200 and related code sections to ensure conformity with the new statutory framework.

(For implementation details, rulemaking, fees, penalties, and the full scope of animal health and processing provisions, consult the enacted Chapter 134 text and subsequent DALS administrative rules.)

Compiled from official sources — confirm details with the bill’s official record.

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