• National Invasive Species Awareness Week Celebrates 20th Anniversary: Kickoff Begins February 25
  

  This year marks the 20th anniversary of National Invasive Species Awareness Week (NISAW), an event focused on how to prevent and manage the devastating damage caused by unwanted, biological invaders. Originally founded by the Weed Science Society of America (WSSA) more »

• National Invasive Species Awareness Week Celebrates 20th Anniversary
  

  WESTMINSTER, Colorado – February 22, 2019 – This year marks the 20th anniversary of National Invasive Species Awareness Week (NISAW), an event focused on how to prevent and manage the devastating damage caused by unwanted, biological invaders. Originally founded by … more »

• Weed Science Society of America Announces 2019 Award Winners
  

  Yesterday the Weed Science Society of America (WSSA) honored more than two dozen individuals for their outstanding contributions to the field of weed science.  The awards were presented during the organization’s annual meeting in New Orleans, Louisiana. more »

• Herbicide-Resistant Kochia: What We Know – and Don’t Know – About This Troublesome Weed
  

  The broadleaf weed kochia is a real and growing threat to major cropping systems and soil conservation practices across the Great Plains. Some kochia populations are now resistant to as many as four herbicide sites of action, making it imperative that we understand more about the weed and how to manage it. more »

• Rethinking Invasive Weed Control: Sometimes Treating Fewer Plants Can Produce a Greater Impact
  

  When battling invasive weeds, it’s easy to conclude that treating the largest masses first is the best strategy. But scientists writing in the journal Invasive Plant Science and Management say that isn’t always best. more »

• For Effective Henbit Control, Timing Matters
  

  Spring-applied herbicides are no match for henbit, a winter annual weed found in more than 50 crops – including corn, cotton and soybean. But researchers say a simple change in application timing can make all the difference. more »

• New Herbicide Technologies Will Fail if We Don’t Remember Past Sins
  

  I think I can safely say after more than 27 years of professional experience, obtained in three different regions of our GREAT country, that most Extension personnel have dedicated their lives to helping solve the problems of American agriculture. more »

• Spray pH Becoming Issue in Dicamba Applications
  

  It’s been a fairly common practice for cotton and soybean farmers to add Roundup to the tank mix to broaden the spectrum of weed control when they were spraying glyphosate – and dicamba-tolerant crops. more »

• Early Bird Gets the Weed
  

  It’s been said, the early bird gets the worm. In weed management, the early bird catches the weed while it’s still small, according to a New Mexico State University Extension weed specialist. more »

The WSSA, a non-profit professional society, promotes research, education, and extension outreach activities related to weeds; provides science-based information to the public and policy makers; and fosters awareness of weeds and their impacts on managed and natural ecosystems. Learn more about the WSSA.