Resources and Best Practices
All pesticide applicators, regardless of type, should follow a basic set of management practices and be in compliance with the law. On this page, find information for pesticide applicators on resources and best practices, including pesticide law in the state, EPA worker protection standards, storage, security, and safe disposal of pesticides. You’ll also find tips on spill kits, transporting pesticides, and calibrating sprayers.
Pesticide Law and Regulations: EPA and FIFRA
There are many state and federal laws and regulations that pertain to the application of pesticides. One of the main statutes that governs the registration, distribution, sale, and use of pesticides across the whole of the United States is the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA).
Laws and regulations are also in place to cover any workers such as those employed on farms, forests, nurseries, and enclosed-space productions. The EPA Worker Protection Standard for Agricultural Pesticides requires that employers and workers take steps to reduce the risk of pesticide-related illness and injury. A WPS checklist is available to pesticide applicators.
While you must strictly adhere to pesticide laws and regulations, there are occasions when a state or federal agency can request emergency exemptions. For example, an exception could be made if a severe pest problem is jeopardizing public health or agricultural goods production.
Safe Use of Pesticides
Pesticides are toxic to both pests and humans. There are less harmful pesticides, many people consider glyphosate to be one of them, but most pesticides will cause adverse effects if intentionally or accidentally ingested or if they are in contact with the skin for a long time.
You may inhale pesticide particles with the air while they are being sprayed. There is also an additional risk of contaminating drinking water, soil, or food.
However, if you take suitable precautions, they need not be hazardous to humans and non-target animal species. Responding immediately and appropriately will minimize the effects of pesticide exposure.
The Pesticide Hypersensitivity Registry ensures that individuals hypersensitive to pesticides are notified if a pesticide application business is planning to make an application to a structure or outdoor above-ground pesticide application within 500 feet of any listed location.
You must wear protective clothing when you apply pesticides, and cover your mouth and nose with a simple device. If you have to wear a respirator, a free respirator fit test is available from Penn State Extension. Extensive training resources are also available in accordance with the EPA New Worker Protection Standard Training Materials. Rules and regulations are also in place with regard to safe pesticide storage.
Pesticide Application Best Practices
A pesticide is only effective when delivered safely and precisely. When you use an approved pesticide, the aim is to apply the correct dose to a defined target with the minimum wastage due to drift using the most appropriate spraying equipment. pH and water modifications can also affect pesticide performance.
Poor spraying may not be apparent for some time, so it’s essential that licensed pesticide applicators are fully aware of their responsibilities and obligations and properly trained in pesticide use and application.
Following pesticide labels and Safety Data Sheets (SDSs) is critical and further information is available online from the National Pesticide Information Retrieval System (NPIRS) website. Pesticide labels contain vital information with regard to storage, correct usage, and specific disposal.
You should store pesticides safely in a secure area that is only accessible to those trained in the product’s application. When you store pesticides securely, it helps prevent spills or leaks into the groundwater, and flammable liquids from catching fire.
Safety is also important when you transport pesticides. There is the potential to cause harm to humans and animals, pollute the environment, incur financial losses, and be subject to legal actions if you do not follow best transportation practices.
In the event of a spill, whether it’s during transportation or on-site, being adequately prepared to handle a pesticide spill or accidental release of a hazardous chemical can avert a contamination crisis.
There are lots of challenges a pesticide applicator has to face, but many of them can be made much easier with the help of a smartphone and tablet application.
Pesticide applicators always have to be aware of drift-related damage. When it occurs, it can be very costly, especially if the crops damaged are commercial grapevines. Pesticides can also affect pollinators such as honey bees, but it is possible to reduce the damage caused to pollinator health by following best practices.
Accurate record-keeping plays a vital role in best pesticide application practices. It’s also a requirement if you want to be in compliance with the Pennsylvania Pesticide Control Act of 1973. An essential aspect of applying pesticides you must record is calibration information.
You can calibrate your rotary sprayer yourself. However, you can get Penn State to calibrate your sprayer equipment for you. Before it happens, there are several pre-calibration tasks you have to complete, such as triple rinsing the tank and piping, cleaning nozzles, and flushing out the line to the pressure gauges.
Last task of the year for a pesticide applicator is to winterize the spraying equipment. Once again, best practices such as wearing PPE and cleaning the sprayer regularly will increase the longevity and efficiency of the equipment.
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Length 4:28This video is designed to give the basics of applying herbicide to the intact outer bark of a woody plant to manage competing and invasive species. -
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ArticlesLate Fall Is the Time to Winterize Your Sprayers
Now that most of the field spraying is over for the season and the weather is turning colder it's time to winterize your pesticide sprayer before it gets too cold and causes damage to sprayer components. The following are tips to guide you. -
NewsTalking to Neighbors about Pesticides
Date Posted 10/5/2022Tips and obligations for private, commercial, and public applicators when neighbors ask about pesticides. -
ArticlesCore Topic Issue: Pesticide Storage Security
The following is a list of resources (articles, worksheets, and websites) that have information about pesticide storage and security. -
ArticlesPennsylvania Department of Agriculture Contacts
Find your Pennsylvania Department of Agriculture Regional Office and contact information. -
ArticlesSoil Fumigation Resources from EPA
This EPA website provides training, outreach, and other resource materials for applicators and others interested in the requirements of using soil fumigants safely. -
ArticlesHow to Handle Chemical Spills
Information for pesticide applicators in the event of a chemical spill. -
ArticlesSprayer Calibration Information
Find out how to sign up to have your air blast sprayer or boom sprayer calibrated. -
ArticlesPennsylvania Pesticide Applicator Certification
Learn how to become a pesticide applicator in Pennsylvania. -
ArticlesSuggestions for Reducing Drift and Impact to Sensitive Areas
The wind has been beneficial this spring to help dry the soil to allow field work but too much wind when you want to spray can be detrimental. -
ArticlesPesticide Special Use Exemptions
A state or federal agency can request emergency exemptions when a serious pest problem jeopardizes production of agricultural goods or public health. -
ArticlesWorker Protection Standard (WPS) Information
Links to Penn State information and miscellaneous websites related to Worker Protection standards. -
ArticlesFrequently Asked Basic Questions
Some miscellaneous questions we often get can be checked out here. Most deal with PaPlants. -
ArticlesTransporting Pesticides in Pennsylvania
Accidents can happen at any point in the transporation chain, even when transport distances are short. -
ArticlesPesticide Hypersensitivity Registry and Application
Information about the Pennsylvania Pesticide Hypersensitivity Registry and the application to complete for placement on the registry. -
ArticlesApplicator-related Forms
Access various forms from the Pennsylvania Department of Agriculture. -
ArticlesPesticide and Container Disposal Information
Learn about programs that benefit applicators by providing a means of disposing unwanted or unused pesticides and recycling pesticide containers. -
ArticlesSpray Adjuvants
An adjuvant is added to a pesticide product or pesticide spray mixture to enhance the pesticide's performance and/or the physical properties of the spray mixture. -
ArticlesToxicity of Pesticides
People who use pesticides or regularly come in contact with them must understand the relative toxicity and potential health effects of the products they use. -
ArticlesContainer/Containment Regulation Information
This information will help dealers and applicators determine if they need a secondary containment unit and/or a containment pad. -
ArticlesRespiratory Protective Devices for Pesticides
For many toxic chemicals, the respiratory (breathing) system is the quickest and most direct route of entry into the circulatory system. -
ArticlesPesticide Storage and Security
This article describes the proper procedures for storing pesticides and application equipment.



