dicamba

• By Larry Steckel • I was thinking it might be 2021 or at least 2020 before we would start getting reports of Xtend soybean fields that were wrapped up with Palmer amaranth. Wrong! It is 2019. I visited several soybean...

A University of Tennessee Institute of Agriculture study published in the Journal of Weed Technology found that mixing glyphosate with formulations of dicamba consistently lowered the pH of the spray solution below 5.0—a critical value according to the latest...

• By Larry Steckel • A year ago this month, I posted a blog titled “Dicamba in Tennessee: Year 3.” At that time, the Tennessee Department of Agriculture had fielded 45 official dicamba drift complaints. There were some issues on...

• By Larry Steckel • There have been a good number of calls on sketchy Palmer amaranth control with a 12.8 oz/A of Engenia or 22 ozs/A of XtendiMax mixed with a quart/A of Roundup PowerMax. I visited a number...

Higher temperatures and mixing glyphosate with dicamba lead to increased atmospheric concentrations of dicamba, according to scientists with the University of Tennessee Institute of Agriculture. Tom Mueller and Larry Steckel, both professors in the University of Tennessee Department of Plant...

• By Tom Barber • Horseweed (marestail) has always been an issue at spring burndown prior to planting. In the early 2000’s, it became a much bigger problem in the southern United States by developing resistance to glyphosate (Roundup). Horseweed can germinate...

The Environmental Protection Agency has registered Taviuim Plus VaporGrip Technology, a premix from Syngenta that contains dicamba and S-metolachlor. State registrations are pending. The premix can be used preplant, at planting and early post-emergence on Roundup Ready 2 Xtend soybeans...

Palmer amaranth is one of the most economically-damaging and difficult-to-control broadleaf weeds across the United States. Previously, Palmer amaranth in Kansas has developed resistance to group 2 (ALS), 5 (atrazine), 9 (glyphosate) and 27 (HPPD – mesotrione, Huskie, Laudis,...

Before Tennessee applicators can apply low-volatile versions of dicamba herbicide in 2019, they must first attend an approved dicamba-specific training. University of Tennessee Extension will offer a dicamba stewardship training across multiple locations, dates and platforms. Dicamba training is mandatory...

The Environmental Protection Agency has extended the registration of specific dicamba formulations for over-the-top use in dicamba-tolerant cotton and soybean varieties for two more years. The action was based on input from and extensive collaboration among EPA, state regulators, farmers,...

The Weed Science Society of America recently released a report based on a recent research workshop on the off-target movement of dicamba herbicides. The meeting, comprising invited scientists, regulators and registrants, was designed to identify data gaps and develop research...

Monsanto Co. has has collaborated with Adjuvants Unlimited LLC to develop a unique agricultural sprayer system cleaner designed to deactivate dicamba. Adjuvants Unlimited plans to market the technology this season through their industry partners, according to a news release. The new...

The Missouri Department of Agriculture has changed the 24(c) special local need labels for FexaPan, XtendiMax and Engenia dicamba herbicide formuatlions. The new cutoff date for Dunklin, Pemiscot, New Madrid, Stoddard, Scott, Mississippi, Butler, Ripley, Bollinger and Cape Girardeau counties...

BASF has modified its Grow Smart Rewards program to reflect the Arkansas dicamba application ban in place from April 16 through Oct. 31. Engenia, BASF's dicamba herbicide that is paired with Xtend soybeans and XtendFlex cotton varieties, is one of...

University of Arkansas weed scientist Jason Norsworthy received the Outstanding Research Award during the recent Weed Science Society of America's Annual Meeting in Arlington, Virginia. He also was named a WSSA Fellow, the society's highest recognition. In presenting the Oustanding...