Reference: http://www.agriculture.com/crops/pesticides/herbicides/how-to-mage-palmer-amarth_179-ar51557 “We don’t need any more weed problems; we have enough of our own,” says Jeff Gunsolus, Extension weed scientist at the University of Minnesota. Palmer amaranth, the native desert Southwest weed, is why he’s concerned. The drought-tolerant weed shares characteristics with waterhemp, so knowing what...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/tips-f-applying-residual-herbicides_179-ar49027 Cool weather and wet soil conditions throughout areas in the Midwest have disrupted the normal sequence of early season field operations. One of those happens to be pre-emergence herbicide applications. The application of soil residual herbicides is important because usually they deliver several weeks of...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/palmer-amarth-magement_179-ar42646 Palmer amaranth is spreading throughout the country, and it is going to require careful management. This weed has the ability to grow two to three inches per day. The effectiveness of foliar-applied herbicides decrease when Palmer amaranth plants are taller than four inches, leaving...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/10-things-you-need-to-know-about-new_179-ar51997 Mike Owen held his audience in rapt attention as he rolled through numerous weed-control products and strategies for 2016 and beyond. Then it came time for the Iowa State University (ISU) Extension weed specialist’s punch line: “How many of you think the new herbicide-tolerant crops...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/epa-revokes-enlist-duo-registration_179-ar51371 If you were neck-deep in herbicide-resistant waterhemp or Palmer amaranth this year, you might have to wait a while for a new tool to help manage them. The Environmental Protection Agency (EPA) has revoked its registration for Enlist Duo, the herbicide component of Dow AgroScience’s...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/good-bad-ugly-of-waterhemp-magement_179-ar50425 It’s here, it’s ugly, and it won’t go away, but you can still fight waterhemp in soybeans with existing technologies, according to University of Illinois (U of I) weed experts. The dark side is that nothing new and highly effective is on the horizon to...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/grow15-weed-control-practices_179-ar49807 Incorporating new weed control tactics is not as simple as altering herbicide programs. But when faced with herbicide-resistant weeds, you’ll want to use every tool available. The first step when you choose a weed control program is to use multiple effective herbicide groups, says Bob...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/syngentas-acuron-flexi-herbicide_179-ar49667 You’ll likely have another tool for managing weeds in 2016 with Syngenta’s Acuron Flexi corn herbicide, pending regulatory approval. Syngenta announced the name of this herbicide premix at this week’s Agricultural Media Summit in Scottsdale, Arizona. Acuron Flexi is similar to Syngenta’s Acuron herbicide, minus...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/how-to-identify-palmer-amarth_179-ar49526 Jeff Gunsolus, Extension weed scientist at the University of Minnesota, walks around with a weed in a bucket at university field days. The culprit is Palmer amaranth, and it stays in the bucket. He doesn’t want the native desert Southwest weed to become his...
Reference: http://www.agriculture.com/crops/pesticides/herbicides/weed-control-tips-f-2015_179-ar48809 Herbicide-resistant weeds are here to stay. The most recent summary indicates that 450 unique cases of herbicide resistance —encompassing 245 species — occur globally. Approximately 11 to 12 cases of unique resistance are discovered each year, says Aaron Hager, Extension weed specialist at the...