Summary

Guidance for diagnosing suspected off-target herbicide injury in cotton, with emphasis on growth regulator herbicides used in pastures and rights-of-way. Explains that symptoms can look similar across products and shift over time, so field diagnosis can be difficult. Recommends documenting damage, mapping field patterns, and ruling out other stresses, then tracing likely sources such as spray drift, sprayer contamination, manure or hay carryover, and delayed movement. Also notes when lab residue testing may help confirm exposure.