TITLE: APPLICATION TIME OF DAY (TOD) EFFECT ON GLUFOSINATE WHEN TANK-MIXED WITH CLETHODIM ON BARNYARDGRASS EFFICACY PI: DAN REYNOLDS EXECUTIVE SUMMARY Recent trends of increasing farm size and reliance on non-selective POST herbicides for weed

Glufosinate applications at midnight showed reduced barnyardgrass control compared to applications made at noon and 6 P.M. Early morning applications at 6 A.M. also showed reduced barnyardgrass efficacy compared to applications at 6 P.M. Environmental factors such as temperature and light conditions at the time of application are likely responsible for the time of day effects observed in this study. Although relative humidity (RH) and presence of dew may have had an effect on glufosinate efficacy, they may have been overshadowed by application TOD.