Late-Season POST Herbicide Applications in Soybeans
July 14, 2008 - The Ohio State University
This is the time of year when we get phone calls about rescuing weed control in Roundup Ready soybean fields, and we hear most often about marestail, giant ragweed, and lambsquarters. Less than adequate weed control after several herbicide applications can often be attributed to failure to use the appropriate combination of herbicides and application timings for the weed population. However, adverse weather, crop replants, and slow crop development can also negatively impact weed control programs.

Messy weed control situations
July 08, 2008 - C.O.R.N Newsletter, The Ohio State University
We seem to have about every weed control situation that is possible across the state of Ohio, ranging from well-developed crops with adequate weed control to relatively small crops with big weeds.

Glyphosate Use in Soybean: Alone or Tank-Mixed?
July 03, 2008 - Farmgate, University of Illinois
With the rapid adoption of glyphosate-resistant corn hybrids and weed spectrum changes in response to near-ubiquitous glyphosate use, the frequency of acres where glyphosate alone will be sufficient to manage weeds in soybean will continue to decrease over time.

Improving glyphosate performance in Roundup Ready soybean
July 03, 2008 - Iowa State University
Over the past decade we have selected for a weed spectrum that possesses a higher level of tolerance than was present at the start of the Roundup Ready era of weed management. Because of this, glyphosate control failures are more common now than they were ten years ago.

Soybean Weed Management: A Mid-Season View
July 02, 2008 - University of Wisconsin-Madison
The benefits of preemergence herbicides in managing early-season weed competition and herbicide application timing in soybean were clearly visible. In two field trials, we had applied an array of preemergence broadleaf herbicides, which will be followed by postemergence applications of glyphosate.