Sequential Postemergence Applications of Liberty and Engenia in Bollgard II Xtendflex Cotton

Managing glyphosate-resistant Palmer amaranth (Amaranthus palmeri) has increased weed management costs for Texas High Plains cotton producers. The introduction of Bollgard II XtendFlex (dicamba-tolerant) varieties and registration of dicamba formulations for postemergence use in cotton, combined with residual herbicides, can effectively control Palmer amaranth.  Liberty can also help control weeds as part of the system, this trial was implemented in 2019 was to determine the most effective sequential applications using Liberty, Engenia, and residual herbicides.