New Liberty label helps Georgia cotton farmersNew Liberty label helps Georgia cotton farmers

EDITOR'S NOTE: A version of this article written by Stanley Culpepper, UGA Extension weed specialist, appears on the University of Georgia Cotton News blog site.

As a result of great team work with the Georgia Department of Agriculture and BASF, Georgia cotton farmers have a new Liberty 24 (c) state label to allow shortened intervals between sequential Liberty applications which can improve weed control.

Research has shown understanding the time interval between sequential post applications is one of many critical components for an effective weed management system. The figure below compares 6 inch Palmer amaranth response to sequential Liberty applications as influenced by interval between applications. Obviously, one needs to spray Liberty when the biggest pigweed in the field is 3” for complete control and in this event a follow up application can be made when the next flush of pigweed reaches 3”. With the challenging weather during 2020, spraying all weeds at 3” or less may not be practical for some fields; thus, when pigweed is too large to kill with the first application then the second application timing is important.

DO NOT MAKE MORE THAN TWO LIBERTY APPLICATIONS in a season for resistance management purposes; follow the second Liberty application 10-12 days later with a layby directed application including conventional chemistry such as Diuron + MSMA + Crop Oil or Roundup + Diuron (add Envoke with layby if morningglory or nutsedge is an issue; check carryover)!

Related:3 ways to handle large pigweed in cotton after EPA dicamba decision

Few critical points from the label:

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