Is the weather giving rise to herbicide-resistant horseweed?
Horseweed is a prolific and unpredictable weed that threatens many agricultural systems and natural landscapes. Unlike most weedy plants, it can emerge at any time of the year.…

Horseweed is a prolific and unpredictable weed that threatens many agricultural systems and natural landscapes. Unlike most weedy plants, it can emerge at any time of the year.…

Today there is a growing demand for nonchemical weed controls to aid growers in the battle against herbicide-resistant weeds. Some are now turning to chaff carts, impact mills and other harvest-time practices to remove or destroy weed seeds instead of leaving them on the field to sprout. …

Horseweed is undoubtedly one of the most troublesome weeds in the world. Herbicide-resistant populations are now found in 18 countries, and many are resistant to multiple herbicide sites of action.…

Greenskeepers and landscape managers may be losing their battle with annual bluegrass – an unsightly weed that competes with desirable turf and produces an uneven surface for golf and other sports.…

Cover crops are a proven tool for suppressing many troublesome weeds. But what about the residues they leave behind? Research featured in the journal Weed Science shows the composition of those residues matters – influencing both the control of summer annual weeds and the yields produced by crops.…

Today the use of cover-crop mixtures has become commonplace. Surveys show most farmers use them and believe them to be superior to any single cover-crop species for weed control.…

Harvest-time weed seed controls have proven highly effective at reducing herbicide-resistant weeds in Australian cropping systems. One of the most popular tactics is the use of an impact mill that intercepts chaff as it exits the harvester.…

When it comes to weed control, today’s growers face a double whammy. Weeds have developed resistance to many of our existing herbicide options at a time when new herbicide discoveries have plummeted.…

Corn and soybean growers in Nebraska are now facing their worst nightmare. A research study featured in the journal Weed Science shows a population of waterhemp has evolved resistance to four distinct herbicide sites of action – including PPO inhibitors, ALS inhibitors, EPSPS inhibitors and PS II inhibitors.…

Sobering global survey data shows weeds have evolved resistance to 167 herbicides spanning 23 of 26 known sites of action. Now scientists writing in the journal Invasive Plant Science and Management say climate change and elevated levels of carbon dioxide (CO2) may be contributing to the development of herbicide resistance.…

Palmer amaranth and waterhemp are two troublesome amaranthus species weeds that are resistant to multiple herbicides. They also have unique reproductive features.…