- WSSA Calculates Billions in Potential Economic Losses from Uncontrolled Weeds
Combined losses in corn and soybean crops would total $43 billion annually in the U.S. and Canada LAWRENCE, Kansas – MAY 4, 2016 – What losses would corn and soybean growers experience if they were forced to eliminate herbicides and … more »
- WSSA Survey Ranks Palmer Amaranth as the Most Troublesome Weed in the U.S., Galium as the Most Troublesome in Canada
LAWRENCE, Kansas – April 5, 2016 – It’s now official. A survey conducted by the Weed Science Society of America (WSSA) has ranked Palmer amaranth, also known as Palmer pigweed, as the most troublesome weed in the U.S. Weeds in … more »
- Get Ready for National Invasive Species Awareness Week 2016!
LAWRENCE, Kansas – February 16, 2016 – Volunteers in communities across the nation are getting ready for National Invasive Species Awareness Week, scheduled for February 21-27. The Weed Science Society of America (WSSA) is one of the sponsors of the … more »
New Featured Articles from WSSA Journals
- Survey Provides Insights on Distribution and Management of Giant Ragweed in the Corn Belt
LAWRENCE, Kansas – May 3, 2016 – A new survey published in the journal Weed Science offers insights into the distribution and management of giant ragweed, a plant known to cause significant losses in corn, soybean and cotton crops. Over the past … more »
- Multiyear Study Evaluates Control Options for Swallowwort Vines
Scientists have just concluded a six-year study of potential controls for pale swallowwort and black swallowwort (Vincetoxicum spp.) – two perennial vines native to Europe that are invading habitats in northeastern North America. more »
- New Study Explores Foliar Treatment Options for HPPD-Resistant Waterhemp
A new study featured in the most recent issue of the journal Weed Technology explores foliar treatment options for herbicide-resistant waterhemp, an annual broadleaf weed species that can be devastating to corn and soybean crops. more »
Weeds in the News
These news items are not positions nor the scientific conclusions of the Weed Science Society of America
- What Are Your Herbicide Options for Large Palmer Amaranth in Corn?
Wet weather in the forecast will likely make for a narrow window to get these fields sprayed timely. As a result, there is likely to be some good size Palmer amaranth up in some corn fields by the time we can get back into spray. more »
- Newly Evolved Species of Tumbleweed Rolling Through California
Believe it or not, tumbleweeds—so strongly associated with wide-open expanses of the western United States—are actually weedy invaders from other continents. The most iconic and successful of these, the Russian thistle (Salsola tragus), came to America more »
- Weeds on Eve of Destructor
Two decades of research and development into destroying weed seed has taken a giant step forward with the release of a harvester integrated version of the Harrington seed destructor. 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.