Abstract
Preemergence and Early Postemergence Weed Control with Instigate, Glyphosate, Realm Q, Atrazine, Dicamba, Corvus, Acuron, and Resicore in Irrigated Corn
Highlights
Mesotrione, a key component of Acuron (S-metolachlor + atrazine + mesotrione + bicyclopyrone), has recently come off patent, allowing it to be used in several novel premixes such as Instigate, Realm Q, and Resicore
Palmer amaranth, kochia, quinoa, common sunflower, and green foxtail control was excellent with most treatments
Crabgrass control with Realm Q + atrazine, dicamba, and glyphosate; and with Corvus + atrazine, dicamba, and glyphosate was slightly less by 73 days after the early postemergence treatments (DAPT)
Summary
Kochia, quinoa, common sunflower, and green foxtail control was excellent with most treatments. Crabgrass control was good with most treatments. Crabgrass control with Realm Q (rimsulfuron + mesotrione) + atrazine, dicamba, and glyphosate; and with Corvus (isoxaflutole + thiencarbazone) + atrazine, dicamba, and glyphosate was slightly less by 73 DAPT. The exceptional weed control with these herbicides resulted in grain yields that were 108 to 125 bu/a greater than in the untreated plots. There were no differences among herbicide treatments for corn yield
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