Daily Dicamba Update: Post-Application Record Keeping 101

Once you’ve successfully completed an on-target and on-label application of dicamba herbicide the post-application record keeping process begins. It’s your documentation that you did everything correctly and by the book.

According to Purdue University’s 2018 Mandatory Dicamba Training module, applicators must create all records for a single dicamba application event within 14 days of the application. Those records must be kept on file for at least two years, and it’s important to remember that split applications are treated as two separate application events in the record keeping process.

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Here are the required application recordkeeping for Xtendimax, Engenia, and FeXapan (Editor’s Note: Purdue’s Joseph Ikley, weed science program specialist, advises “the breakdown of typical RUP vs. the new products is Indiana specific to let applicators know that any dicamba application will generate a set of records. Not all states made older dicamba formulations RUPs, but all record requirements are listed explicitly on the new formulations’ labels”):

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  • Location
  • Applicator name and permit number
  • Date of application
  • Crop
  • Pest
  • Acres treated
  • Rate
  • Total amount used
  • Brand name & formulation
  • Manufacturer
  • EPA registration number
  • Proof of applicator training
  • Receipts for product purchase (save those receipts!)
  • Product Label (some states like Tennessee are requiring applicators to have either a physical or digital copy of the federal label on hand at time of application)
  • Date you visited DriftWatch.org for nearby sensitive crop information AND documentation that you surveyed nearby fields for sensitive crops prior to application
  • Pre-emergence or Post-emergence (if the application is post you must include the number of days after planting)
  • List of all products in tank mix
  • Type of nozzle and pressure used
  • Date and start, as well as finish time, of the application
  • Air temperature measured at boom height for both the start and end of application
  • Wind direction and speed measured at boom height for both the start and end of application
  • Date the sprayer was cleaned and method used to clean it

REMINDER: Purdue urges applicators and agronomists to keep in mind that herbicide classes should be rotated whenever possible as a way of reducing herbicide resistance development. Dicamba is a Group 4 herbicide; other common Group 4 active ingredients include 2,4-D and clopyralid.

Read more on the label requirements here:

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