Updated Paraquat Safety Measures

In 2016, the Environmental Protection Agency (EPA) released a number of new safety measures to reduce the risks of paraquat exposures to applicators. This includes:

  • Changing labels and other supplemental warning materials to emphasize paraquat toxicity.
  • Requiring training (every three years) for paraquat users.
  • Restricting the use of all paraquat products to certified applicators only.
  • Requiring closed system packaging for all non-bulk (less than 120 gallons) end use product containers of paraquat.

Earlier this year, additional changes to the paraquat label were released, including:

  • Requiring limitations on aerial applications, including a residential buffer.
  • Prohibiting pressurized handgun and backpack sprayer applications.
  • Requiring enclosed cabs or respirators for groundboom applications.
  • Increasing the Restricted Entry Interval (REI) for several crops.

The following document from the Association of American Pesticide Control Officials (AAPCO) provides an excellent summary of the new rules (including the bullets above) and answers frequently asked questions about the rules.

Just as a reminder, applicators must complete an online training every three years if they plan to apply paraquat. In addition, every applicator applying paraquat must have a pesticide applicator’s license.  Applicators may no longer apply paraquat under the supervision of another certified applicator.  Use this guide for step-by-step instructions on how to complete the training.

Guide for New Required Paraquat Training

Paraquat (most commonly used as Gramoxone) will have a new label beginning as early as August 2019.  The new label requires applicators to take a training every three years.  Currently, the training is only available online.  The link below is a PDF of a step-by-step tutorial made to guide someone through the online training. Paraquat Training Instructions. The training and assessment should take around 45 minutes to complete.

Also, under this new label, every applicator applying paraquat must have a pesticide applicator’s license.  Applicators may no longer apply paraquat under the supervision of another certified applicator.  Contact your local Clemson Extension office about opportunities to get a pesticide applicator’s license.

Some Pesticides Now Approved for Hemp Production in SC

Yesterday (6/27/19) Clemson’s Department of Pesticide Regulation (DPR) released a list of pesticides they are now allowing for use in hemp production.  A PDF including a letter from DPR and the list of approved products can be accessed here: Approved Hemp Pesticides.  Please read the letter from DPR before using any chemicals on the list.  Additionally, it is recommended that growers speak with their processors to ensure using these chemicals will not result in any unacceptable residues.

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Growers will now have some chemical options for treating insect and disease pests in hemp crops.

Previously, growers were only allowed 25(b) products, which the EPA deems “minimum risk products”. These are products that do not have EPA registration numbers (mostly plant extract oils).