|Simmons, Frederick - UNIV OF ILLINOIS|
|Maxwell, Douglas - UNIV OF ILLINOIS|
Submitted to: Research Report North Central Weed Science Society United States
Publication Type: Other
Publication Acceptance Date: December 18, 1997
Publication Date: N/A
Technical Abstract: The purpose of this experiment was to evaluate chloroacetamide herbicides applied preemergence at recommended and twice the labeled use rate. The study was established at the Brownstown Agricultural Research Center near Brownstown, Illinois. The soil was a Cisne silt loam with a pH of 6.1 and 1.5% organic matter. Pioneer 3394 corn was planted 1.5 inches deep on April 17 in 30 inch rows. Treatments were arranged in randomized complete blocks with three replications of plots 7.5 by 40 feet. Herbicides were applied with a CO2 backpack sprayer delivering 20 gpa and equipped with 8003 flat fan nozzles. A broadcast application of dicamba at 0.5 lb/A was applied early postemergence for broadleaf weed control. The primary grass species present was fall panicum. Ratings of corn injury and control of fall panicum were made in early and mid-season. None of the plots were cultivated. These treatments did not injure corn even at twice the recommended rates. Conditions were optimum for soil-applied herbicide efficacy, thus outstanding control of fall panicum was achieved with all treatments early and with most treatments even at mid-season.