Nicholas Brown, a contributor to Farm Law & Tax, recently wrote an article for Southern Ag Today that covered the potential unavailability of post-emergent dicamba products during the 2025 growing season.  Southern Ag Today is a peer-reviewed publication managed by extension professors across the southern United States.  Here is a link to the article.

Application of post-emergent dicamba has been a divisive topic since its approval by the EPA in 2017.  On the one hand, a large percentage of soybean and cotton farmers quickly adopted post-emergent dicamba to apply to their dicamba-tolerant seeds.  On the other hand, other farmers and even non-farming neighbors made numerous complaints of herbicide drift with post-emergent dicamba being suspected in many cases as the culprit.

All registrations of post-emergent dicamba were vacated in 2020 by the Ninth Circuit, only to be re-registered again by the EPA later that year.  These subsequent registrations were again vacated by the US District Court of Arizona in February 2024, with the opinion specifically noting that the EPA needed to abide by FIFRA's full approval process on subsequent registrations.  The full registration process typically takes 17 months but may take longer due to several reasons.

In this article, Assistant Extension Professor Nicholas Brown, JD gives his prospective as a published researcher of post-emergent dicamba issues.