2.4 Navigating NOP Regulations

Jenna Bjork and Katie Steneroden

The NOP makes rules and regulations for producing, handling, labeling, and enforcing all organic products. With some exceptions, any food or food product labeled “organic” must be certified organic by the USDA.[1] According to §205.101, these agricultural products must be unprocessed, practices must follow the NOP rules, and farmers are not allowed to use the USDA organic seal. Some farmers may find this exemption sufficient, while other businesses may pursue certification for the broader marketing benefits and consumer appeal.

The regulations for the NOP are found in Title 7 (Agriculture) of the CFR in Part 205 of Chapter I (Agricultural Marketing Service), Subchapter M. The regulations may also be cited as 7 CFR 205 et. seq. The NOP regulations are divided into subparts A through G. They include definitions, certification, and administrative requirements.

For instance, farmers and ranchers seeking organic certification must meet these requirements:

  • Organic food must be produced without conventional pesticides, petroleum-based fertilizers, sewage sludge-based fertilizers, herbicides, genetic engineering (biotechnology), antibiotics, growth hormones, or irradiation (§205.105).
  • It is a land requirement to have no prohibited substances applied for 3 years before crop harvest (§205.202).
  • Animals raised on an organic operation must meet animal health and welfare standards, not be fed antibiotics or growth hormones, be fed 100-percent organic feed, and be provided access to the outdoors with at least 30% dry matter intake (DMI) from pasture during the year (§§205.236—240).

USDA Organic logo.Veterinarians working with organic and alternative farmers don’t need to understand the NOP regulations fully. However, knowing where to find information is important when needed. Each subpart has been designed to help you explore and become more familiar with the NOP. This chapter is not meant to be comprehensive. It has pulled out some sections that DVM may find the most relevant to working with organic farmers. After reading about each subpart, click the links provided to answer the interactive question(s) within each section.

Subpart A—Definitions

Subpart A defines several terms included in the NOP regulations. For definitions of terms used in organic production, which may be helpful as you communicate with organic and alternative farmers and ranchers, visit §205.2.

LOOK IT UP AND LEARN 1

An interactive exercise is available in the online version of this text.

One exception to this rule is that farms that make less than $5000 gross annual income do not have to be certified organic to label their products as organic. According to §205.101, these agricultural products must be unprocessed, practices must follow the NOP requirements, and farmers are not allowed to use the USDA organic seal. Some farmers may find this exemption sufficient for their purposes, while other businesses may choose to pursue certification for the broader marketing benefits and consumer appeal

Subpart B—Applicability

Subpart B includes information on which operations need to be certified and those exempt from certification, as well as the term “organic” and record-keeping practices for certified and exempt operations. For instance, records must be clearly understood during inspection and maintained for at least five years. Therefore, you can assist farmers by providing itemized invoices (ensuring all products used are listed) for every sale and service you provide. For more information on record-keeping requirements of certified operations, visit §205.103.

LOOK IT UP AND LEARN 2
An interactive exercise is available in the online version of this text.

Subpart C—Organic Production and Handling Requirements

Subpart C addresses requirements for the organic OSP and standards for soil fertility, crop nutrients, and other crop-related practices. Several regulations in this subpart also address requirements for livestock origin, livestock feed, living conditions, and standards for health care, pest management, and pasture practices. One regulation DVM and farmers must abide by is that they must NOT “withhold medical treatment from a sick animal to preserve its organic status” (§205.238).

Another common topic in this section is the Pasture Rule, a 2010 amendment that clarifies ruminants’ livestock feed and living conditions. A complete set of guidelines has been written for farmers to understand the Pasture Rule. It can be found in the USDA’s document on Implementing the NOP Pasture Rule [PDF]. According to these guidelines, organic ruminant livestock must have free access to certified organic pasture for the entire grazing season. This period is specific to the farm’s geographic climate but must be at least 120 days. Due to weather, season, or climate, the grazing season may or may not be continuous. Other requirements include:

  • Organic ruminants’ diets must contain at least 30% dry matter (on average) from certified organic pasture during the grazing season. Dry matter intake (DMI) is the amount of feed an animal consumes daily on a moisture-free basis. The rest of its diet must also be certified organic, including hay, grain, and other agricultural feed products.
  • Ruminants must have free access to the outdoors year-round outside the grazing season except under specific conditions (such as inclement weather) (§205.239(b)).
  • During the finishing period, ruminant slaughter stock is exempt from the minimum 30 percent DMI requirement from grazing. The finishing period for ruminant slaughter stock cannot exceed one-fifth of the animal’s total life or 120 days, whichever is shorter (USDA Organic 101 [PDF]).

To help encourage farmers to comply with the Pasture Rule, download and print this helpful handout: Tip sheet for the National Organic Program’s (NOP) Pasture Rule.

For further requirements that may affect organic livestock you work with, visit:

While pasture access is not required for organic poultry, outdoor access must be provided. However, temporary confinement may be allowed during certain circumstances. For instance, farmers with birds located near Highly Pathogenic Avian Influenza (HPAI) outbreaks can work with their ACA to determine the proper steps of approval and living conditions. More information about organic poultry requirements can be found at Tipsheet: Organic Poultry Production for Meat and Eggs (ATTRA) [PDF] and Confinement of Organic Poultry due to Avian Influenza (USDA) risk.

LOOK IT UP AND LEARN 3
An interactive exercise is available in the online version of this text.
LOOK IT UP AND LEARN 4
An interactive exercise is available in the online version of this text.
LOOK IT UP AND LEARN 5
An interactive exercise is available in the online version of this text.

Subpart G—Administrative

Subpart G contains administrative regulations surrounding evaluation criteria of allowed and prohibited substances used on organic farms. It also includes rules for State organic programs, fees, non-compliance procedures, and appeals processes. Most importantly, it includes the National List of Allowed and Prohibited Substances, which DVM who work with organic animals need to be familiar with. Natural substances are generally allowed (unless expressly prohibited), synthetic substances are not permitted (unless specifically allowed), and some substances may only be used in specific situations or up to a maximum amount.

The NOSB meets twice a year to review the list and evaluate items that may be added or removed from the list. Every substance on the list undergoes a thorough “sunset review” by the NOSB every five years to confirm it continues to meet the program’s requirements. The NOSB makes recommendations to the Secretary of Agriculture through the NOP. If the NOSB determines the substance may stay on the list, the USDA may publish a Federal Register notice. On the other hand, if the substance is recommended for removal from the list, the USDA may initiate rulemaking (which includes an opportunity for public comments). The certification agency updates their farmers and ranchers when items are added or removed from the list. While the NOSB is critical in initiating a particular recommendation to the NOP, the NOP has the final word on what they ultimately do with that recommendation. A library of recommendations, meeting minutes, and more information on the sunset review process can be found in the NOSB Recommendations.

A nonprofit agency, the Organic Materials Review Institute (OMRI), has developed a product review program that is considered the gold approval standard. Suppliers of agricultural inputs can have their proprietary active and inert ingredients reviewed for compliance with NOP regulations. The OMRI  seal can help farmers determine what is approved for use. It’s important to note that not all suppliers will pay for the OMRI review and certify their products, but the materials may still be allowed. Certifiers typically review products on their own and are not required to follow OMRI’s decisions. It is essential for organic farmers and ranchers to always check with their certifier to verify if a specific brand name or formulation is approved for organic production.

A woman posed at a table with a suite of products for sale.

For specific information on what substances are allowed and prohibited, as well as how the National List is evaluated and amended, visit the following:

To help you better understand which common substances are allowed and prohibited on organic farms, practice the activity below by using the resources in the following handout: Guidance for Treating Organic and Alternative Livestock.

An interactive exercise is available in the online version of this text.

Select each of the four drawers to choose commonly allowed substances in each drawer. After completing all drawers, select the “Allowed Substances” bag to see a summary of allowed substances used in this activity.

More details on prevention and treatment practices of organic and alternative animals can be found in “Prevention and organic/alternative animal health” and “Treatments and practices for organic and alternative livestock.”


  1. One exception to this rule is that farms that make less than $5000 gross annual income do not have to be certified organic to label their products as organic.
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Organic and Alternative Livestock Health Copyright © 2026 by Katie Steneroden; Jenna Bjork; and Delaine Quaresma is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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