COTVAR is computer program that may be used to summarize cotton variety performance data from state cotton variety tests conducted in five states (Arkansas, Louisiana, Mississippi, Missouri, and Tennessee) in the Mississippi River Delta region.  Within each state variety test, varieties may be evaluated in one or more experiments across one or several locations. To ensure that statistical rigor is maintained in COTVAR, comparisons are valid only when the selected varieties are evaluated in the same experiment.

Development and maintenance of COTVAR is made possible by funding from Cotton Incorporated.