Waterhemp has been present in Indiana field surveys for at least the last 10 years but recent control issues with glyphosate is moving this weed up on the radar of concern for Indiana growers.

You may have only 3 years left. No, I'm not talking about attractive corn and soybean prices. I'm talking about something that could really eat away at your bottom line.

We are now limited to herbicide treatments that can be applied just prior to harvest to help dry down weed vegetation prior to a killing frost.

Glyphosate herbicide was found in significant levels in Mississippi as part of a U.S. Geological Survey Office (USGS) project, and the findings have been submitted to the Environmental Protection Agency to be used as part of the agency's evaluation of the registration of glyphosate.

The list of herbicide active ingredients available for pre-harvest applications in corn or soybeans is relatively short, says University of Illinois Extension weed specialist Aaron Hager.

Monsanto Co. announced Wednesday that the company is under investigation by the U.S. Securities and Exchange Commission for a program that offered incentives to dealers who sell the biotechnology giant's Roundup weedkiller.

A successful weed control program for fallow fields may still be a needed to keep weed pressure down and reduce the introduction of more weed seed into the soil seed bank which can impact future crops.

The greater the temperature change and the longer the cool period extends beyond the temperature change, the more likely reduced weed control will occur with glyphosate.