- Weed Science Societies’ Comments on EPA’s Proposed Herbicide Resistance Management Plan and Tank Mix Prohibitions
The Weed Science Society of America (WSSA) and its affiliates, the Aquatic Plant Management Society, the Northeastern Weed Science Society, the North Central Weed Science Society, the Southern Weed Science Society, and the Western Society of Weed Science recently commented more »
- 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 »
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
- Mid-South to Adopt Harvest Weed Seed Control?
Will Mid-South producers soon adopt widely used Australian techniques aimed to keep resistant weed seed out of fields? Steve Powles, a leading resistant weed specialist in the world, predicts that is exactly what will happen. more »
- 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 »
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.