3.3 Private Applicators

Private Applicators

Quick Answer: A private applicator in Michigan is a person who uses or supervises the use of restricted-use pesticides (RUPs) to produce an agricultural commodity on land owned or rented by the applicator or their employer. To earn the credential you must be at least 18, pass the private core exam (two manuals: the National Pesticide Applicator Certification Core Manual, Third Edition, plus the Michigan Private Applicator Addendum), and pay the $50 certification fee — waived for honorably discharged veterans. The credential expires December 31 of the third year after issuance. Add the AE aerial standard only if you apply by aircraft, and the FUM fumigation standard only if you use fumigants.

Why a Separate Private Pathway Exists

Agricultural producers have a fundamentally different risk profile from for-hire commercial applicators. They treat their own crops, on land they control, often as part of an integrated production plan they know intimately. Michigan, like most states, separates the Private credential from the Certified Commercial credential to avoid forcing every farmer who needs an RUP into the full commercial exam structure. The Private exam focuses on agricultural use sites, agricultural commodity labels, and the producer's responsibilities under Part 83.

The trade-off is scope. A private credential authorizes RUP use only to produce an agricultural commodity, on land the applicator or their employer owns or rents. Michigan's definition adds one narrow extension: application on property of another for no compensation other than the trading of personal services between producers. Anything resembling payment — cash, fuel, a discount on inputs — turns the work into commercial application and requires a certified commercial credential in the appropriate category. Michigan also expressly includes apiarists who apply restricted-use pesticides to their own colonies to manage bee diseases or parasites.

Who Must Hold a Private Credential

You need a Private Applicator credential if you:

• Apply restricted-use pesticides to an agricultural commodity produced on land you own.
• Apply restricted-use pesticides to an agricultural commodity on land owned by your employer, as part of your job.

You do not need a Private Applicator credential if you only apply general-use pesticides on your own property. General-use products are available to the public without certification. The credential is triggered specifically by RUP use.

The Private Core Exam: Two Manuals

The Private Core exam is based on two separate manuals:

1. National Pesticide Applicator Certification Core Manual — the same federal backbone used for the Commercial Core, covering FIFRA, labels, formulations, toxicity, PPE, environmental fate, transportation, storage, and application principles.
2. Michigan Private Applicator Addendum — Michigan-specific content covering Part 83 of NREPA, MDARD's role, Michigan RUP designations, record-keeping requirements, and Michigan's specific application rules.

Both manuals are sold at msupesticidemanuals.com and through the National Pesticide Safety Education Center at npsecstore.com; some MSU Extension county offices stock them. Buy the third edition (2025) of the national manual — MDARD has administered core exams from it since August 1, 2026. A common study mistake is to prepare from the national manual alone and skip the Michigan addendum, which carries Michigan-specific questions the federal manual cannot answer. The exam is closed book, with true/false and multiple-choice questions, and the passing score is 70%.

Michigan also keeps an accommodation the commercial pathway does not have: when a private applicant cannot demonstrate competency by written examination, Regulation 636 allows an oral fact-finding interview using standardized questions developed by MSU Extension and approved by the pesticide advisory committee. The interview can carry restrictions, limiting the applicator to a certain type of equipment or pesticide.

Fees, Age, and Validity

When Additional Standards Are Required

The Private credential is more streamlined than the Commercial credential, but two method-based standards still apply when the application method introduces additional risk:

• Aerial standard — required if you apply RUPs by aircraft. Even on your own farm, aircraft dispersal introduces drift, off-target movement, and airspace considerations that the standard specifically addresses.
• Fumigation standard — required if you use fumigants. Fumigants are gaseous pesticides used in enclosed spaces (for example, grain bins, sealed silos, or soil under tarps). Their confinement and toxicity profile warrant a separate standard regardless of ownership.

If you only apply RUPs with ground equipment and use no fumigants, no additional standard is required. Most Michigan field-crop producers do not need either standard.

What Private Applicators Can and Cannot Do

Common Exam Scenarios

Scenario 1 — Corn producer with RUP insecticide. A farmer applies a restricted-use soil insecticide to field corn on land they own. They need the Private Applicator credential. They study the National Core Manual and the Michigan Private Applicator Addendum, pass the Private Core exam, pay the $50 fee, and apply with ground equipment. No Aerial or Fumigation standard is needed.

Scenario 2 — Farm employee. A hired hand applies RUP herbicides on the farm owner's land as part of their job. They need the Private Applicator credential (not the Commercial), because the work is on the employer's property and is part of their employment — not for-hire to the public. The owner cannot loan their Private credential to the employee; each applicator must be separately certified.

Scenario 3 — Aerial application. A producer wants to apply an RUP fungicide to wheat by aircraft. Even on their own land, they must add the Aerial standard. Many producers instead hire a commercial aerial applicator who already holds the Commercial Agricultural category plus the Aerial standard — this is lawful because the producer is not the one applying.

Scenario 4 — Fumigant use. A grain producer fumigates a stored-grain bin with a phosphine fumigant. The fumigant is an RUP, and fumigation requires the Fumigation standard regardless of ownership. The producer needs the Private Applicator credential plus the Fumigation standard, or must hire a commercial fumigator.

Common Confusion Points on the Exam

• Owner vs. for-hire. Private credentials do not authorize for-hire application to a neighbor's land, even at cost. The only exception is a straight trade of personal services between producers with no other compensation. Paid work requires a commercial credential.
• General-use vs. RUP. General-use pesticide application on your own property does not require any credential. The Private credential is triggered by RUP use.
• Two manuals. The Private Core exam uses the National Core Manual plus the Michigan Addendum. Studying from only one is a common cause of failed sittings.
• Per-applicator certification. A farm's Private credential cannot be shared among workers. Each person who applies an RUP must hold their own credential.
• Aerial and Fumigation are method-based, not ownership-based. Owning the land does not exempt the applicator from the Aerial or Fumigation standard.

Recertification Preview

Private applicator recertification is the simplest of the three pathways: 16 private core seminar credits earned before the credential expires, or retake the private core exam. There are no per-category credits because the private credential is a single credential tied to agricultural RUP use — though an applicator holding the AE or FUM standard needs 2 credits for each of those. (The full recertification structure is covered in Section 3.4.)