15 Most Recent Weed Articles
Update on Multiple Herbicide Resistance in Illinois Waterhemp Populations
Further complicating the management of herbicide-resistant waterhemp is the fact that more and more populations are resistant to herbicides with more than one site of action. May 10, 2012
Corn Growth Stages and Postemergence Herbicides: Size Is Important
Postemergence corn herbicides typically have application restrictions regarding corn height or growth stage. Height is not always an accurate indicator of physiological maturity, however; many agronomists recommend leaf number as a more accurate measure of developmental stage. May 10, 2012
Removing Weeds from Corn: The Smaller, the Better
The longer weeds are allowed to remain with the corn crop, the greater the likelihood of yield loss. Eliminate weeds while they are small. May 4, 2012
Yes, It's Time Again to Control Biennial Weeds in Pastures
Biennial weeds, including thistles and poison hemlock, are showing up in pastures and along roadsides. Successful management requires integrated, systematic steps to prevent seed production and spread. April 20, 2012
Weed Science Odds and Ends
Guidance is provided for effective weed management during an unusual start to the cropping season. April 20, 2012
Options to Control Corn Plants from the Initial Planting
For corn producers who decide to replant damaged stands, existing plants may need to be controlled first. April 20, 2012
Multiple vs. Effective Modes of Action
Just because a product has multiple modes of herbicide action doesn't mean each component will be effective against the target. Effectiveness is influenced by weed species, application timing, and herbicide resistance profile. April 6, 2012
Growth Regulator Herbicides for Burndown Applications
Guidelines are provided on using growth regulator herbicides, including 2,4-D and dicamba, for burndown applications to control weed vegetation before planting corn or soybean. April 6, 2012
New Herbicides for 2012
The several new herbicide products commercially available for 2012 are outlined. March 22, 2012
A Waterhemp Population Resistant to Synthetic Auxin Herbicides Identified
Nebraska weed scientists have discovered a waterhemp population resistant to synthetic auxin herbicides (a category including 2,4-D and dicamba). Illinois producers should take heed and practice appropriate, and multiple, management tactics. November 4, 2011
What's the Potential for Herbicide Carryover in 2012?
Precipitation extremes at both ends of the spectrum in the 2011 growing season warrant evaluating whether herbicide carryover may be an issue for 2012 crops. November 4, 2011
Weed Control After Harvest
Considerations are spelled out regarding applying fall herbicide to control winter annual weed species. October 7, 2011
Take Time to Assess the Effectiveness of Your Weed Management Program
Waterhemp and horseweed are appearing in many Illinois corn and soybean fields this fall. Take advantage of the elevated view from the combine cab to survey and assess your weed management program. September 9, 2011
Preharvest Herbicide Applications in Corn and Soybean
There are limited options for preharvest herbicides in corn or soybean, but guidelines for available products are outlined. August 26, 2011
Be Cautious With Late-Season Herbicide Applications in Soybean
Rotational interval restrictions and and contact leaf burn are key concerns if you are looking to apply herbicide to soybeans at this point in the season. July 29, 2011