Acuron, the newest Syngenta corn herbicide with four active ingredients, including new bicyclopyrone, and three modes of action, is anticipated to receive EPA registration in time for the 2015 growing season.
Dow AgroSciences announced it will launch its innovative Enlist Duo herbicide for the 2015 crop season. Enlist Duo is part of the Enlist Weed Control System, a herbicide-tolerant trait technology for corn and soybeans. The herbicide will provide new advantages for the management of hard-to-control and resistant weeds. It will be launched in conjunction with a stewarded introduction of Enlist corn, and seed production of Enlist soybeans in 2015.
Glyphosate-resistant Palmer amaranth, first confirmed in Louisiana in 2010, continues to spread south in Louisiana, said LSU AgCenter weed scientist Daniel Stephenson. But Louisiana farmers have learned from their peers in other states that early control can be the answer to preventing spread of this persistent weed.
“Palmer amaranth can be controlled, but success takes persistence,” Stephenson said. “The only practice that’s foolproof is zero tolerance. Any plants that aren’t killed by pesticides must be removed and burned.”
Experts with the Weed Science Society of America (WSSA) say one often-ignored strategy for controlling herbicide-resistant weeds is now getting a second look. Farmers are finding success by ensuring that weed seeds remaining in the field at harvest time aren’t dispersed and left to sprout in subsequent growing seasons.
Herbicides applied in the fall often can provide improved control of many winter annual weed species compared with similar applications made in the spring, according to a University of Illinois weed scientist.
Fall is an excellent time to manage biennial and perennial weeds. In particular, biennials such as common burdock, wild carrot, and bull, musk, and plumeless thistles are much easier to kill while they are in the rosette stage of growth and prior to surviving a winter.
At grain harvest, removing the weed seed often becomes a missed opportunity, and a tremendous amount of weed seeds are left on the field. Harvesting weed seeds can prevent them from becoming part of the soil seed bank.
SDSU weed science team confirms the finding of Palmer amaranth (Amaranthus palmeri) in South Dakota. The Palmer amaranth plants were found in a sunflower field in Buffalo County next to the Missouri River in central South Dakota.