The University of Tennessee Cotton Agronomy Program provides an unbiased evaluation of experimental and commercial varieties available for production in Tennessee each year. The 2020 program consisted of two types of trials: the Official Variety Trials (OVTs) and the County Standard Trials (CSTs). The OVTs are small plot, replicated variety trials composed of experimental and commercial varieties. The CSTs are large plot variety strip trials located throughout the Western and Central regions of Tennessee and are only composed of major commercial cultivars. Six OVTs and ten CSTs were conducted during 2020.  Of the ten CSTs, three included GL (Glytol/LibertyLink), FE (Enlist) and XF (XtendFlex) cultivars; five included only XF cultivars; and two included only FE cultivars. Subsequently, the CST data has been summarized in three separate tables; the first average table consists of the averages of all XF cultivars across eight locations; the second average table consists of the averages of all FE cultivars across five locations; and the third consists of the averages of GL, FE, and XF cultivars across three locations.

This publication is intended to help cotton producers identify varieties that are high yielding, are stable in yield performance across years, and produce high-quality fiber; therein, included information should provide those in the seed industry, crop consultants, and the UT Extension service insight into varietal adaptation of all tested varieties to Tennessee field environments.



December 2020
Department of Plant Sciences
UT Extension
UT AgResearch
The University of Tennessee Knoxville, Tennessee

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