|Hart, Stephen - 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 17, 1996
Publication Date: N/A
Technical Abstract: The purpose of this experiment was to evaluate sulfentrazone and chlorimuron combinations for broadleaf weed control in soybeans. The study was established at the University of Illinois South Farm, Urbana. The soil was a Drummer silty clay loam with a pH of 6.1 and 5.3% organic matter. Pioneer 9394 soybeans were planted 1.0 inch deep on May 20 in 30 inch rows. Treatments were arranged in randomized complete blocks with 3 replications of plots 10 by 36 feet. Herbicides were applied with a CO2 backpack sprayer delivering 20 gpa and equipped with 8003 flat fan nozzles for preemergence and 8003 nozzles for preemergence applications and 8002 flat fan nozzles for postemergence applications. A boradcast application of 0.10 lb/A clethodim and 1.0% Prime Oil was made to all plots on June 26. Soybean tolerance was excellent to preemergence applications of sulfentazone and chlorimuron. Velvetleaf, common lambsquarters, and common ragweed control with sulfentrazone and chlorimuron was excellent. Control of tall morningglory was superior to other commercial weed control programs.