|Simmons, Fredrick - UNIV OF ILLINOIS|
|Hulting, Andrew - 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 study was to evaluate various tank-mix partners with sulfentrazone, in comparison with several standard mixtures, for weed control in 30 inch rows, conventionally tilled soybeans. The study was established at the Brownstown Agricultural Research Center near Brownstown, Illinois. The soil was Cisne silt loam with a pH of 6.1 and 1.5% organic matter. Pioneer 9395 soybeans were planted 1.0 inch deep on May 16 in 30 inch rows. Treatments were arranged in randomized complete blocks with three replications of plots 7.5 by 30 feet. Herbicides were applied with a CO2 backpack sprayer delivering 20 gpa and equipped with 8003 flat fan nozzles. Visual ratings of soybean injury and weed control were made a various intervals throughout the season. None of the plots were cultivated. Several of the treatments caused slight to moderate injury. Those containing pendimethalin causing the greatest and most persistent injury. By the last rating only slight injury was noted with any treatment. Many treatments provided excellent control of both common ragweed and lambsquarters early in the season, and some provided excellent control throughout the season. Some of the most effective treatments for both species included combinations of sulfentrazone plus NAF75.