"This research demonstrated that significant herbicide use reductions are possible with smart sprayers compared with broadcast applications,” reports Anita Dille, Ph.D., WSSA member scientist, corresponding author, Kansas State University agronomy professor, and her research team.
Waterhemp resistance to protoporphyrinogen oxidase (PPO) inhibitor (Group 14) herbicides can develop from soil-applied preemergence applications, and not just from postemergence herbicide use, according to a recently published research article in the journal Weed Science.
Fall-applied residual herbicides are among the best available options to use for glyphosate-resistant (GR) Italian ryegrass control, according to a newly published research article in the Weed Science Society of America (WSSA) Weed Technology journal.…
New research from the University of Waterloo shows that a single, targeted herbicide application from a Remotely Piloted Aircraft System (RPAS) can suppress common reed invasions with more than 99% effectiveness.
Until now, not much was known about the influence that nozzle type and application volume have on weed control efficacy with remotely piloted aerial application systems (RPAASs). However, new research shows that RPAAS applications using low-drift nozzles at low spray volumes (1.0–1.5 gallons/acre) can achieve weed control levels comparable to ground sprayer applications at 10 gallons/acre in turf.
Lodgewood pine are weeds that quickly outcompete local flora. New Zealand has launched The National Wilding Conifer Management Programme to manage the problem.
Though planting crops more densely can be an effective approach for suppressing weeds in problem areas, many growers fail to adopt this approach because of the high cost of seed. New research featured in the journal Weed Science, though, describes a bioeconomic model growers can use to overcome that cost barrier.
It is clear nonnative plant invaders can devastate native plant communities. But weed management efforts can also hold the potential to cause harm.
Horseweed is one of the most common and troublesome weeds in soybeans – able to cause significant yield losses when left uncontrolled. That’s not surprising when you consider a single horseweed plant can produce up to 200,000 feather-light seeds that can be easily spread across vast distances.
Rice is mainstay of the human diet and is grown in almost every region of the world. Its main competitor is “weedy rice,” a weed similar in size, shape and structure to the crop it infests.…
As our climate changes, many invasive plant species are expanding their growing range and creating daunting new threats. Researchers from the University of Massachusetts say it’s time to take well-informed, preventive steps to mitigate the impact.…
Palmer amaranth is widely recognized as one of the most troublesome weed species in U.S. agriculture. It was first introduced in Minnesota in 2016 through contaminated seed mixes used for conservation plantings.…
Paperbark trees (Melaleuca quinquenervia) are a weedy invader that once dominated natural landscapes and fragile wetlands across southern Florida. One reason for their success: A single large tree can retain as many as 9 million viable seeds that are released in response to wildfires, herbicide applications and other disturbances.…
Today there is a growing demand for nonchemical weed controls to aid growers in the battle against herbicide-resistant weeds. Some are now turning to chaff carts, impact mills and other harvest-time practices to remove or destroy weed seeds instead of leaving them on the field to sprout. …
Alligatorweed is an invasive plant from South America found in or near bodies of water across the southern U.S. and California.…
Junglerice has become a significant problem in dicamba-resistant cotton and soybean crops. In Tennessee, for example, it is found in 76 percent of dicamba-resistant cotton fields and 64 percent of dicamba-resistant soybean fields.…
Previous research has shown that tillage-based, organically grown crops benefit from better soil quality than those grown under conventional tillage. They compete more effectively against weeds and produce better yields.…
In this age of globalization, invasive plants can quickly become established in new countries and new continents. To arm stakeholders with the information they need to take action, the journal Invasive Plant Science and Management (IPSM) has launched a new series on the biology and ecology of invasive plants.…
Horseweed is undoubtedly one of the most troublesome weeds in the world. Herbicide-resistant populations are now found in 18 countries, and many are resistant to multiple herbicide sites of action.…
Complaints about off-target movement of dicamba, 2,4-D and other synthetic auxin herbicides persist, despite the introduction of reduced-volatility formulations. One indicator: a survey shows that 30 percent of Nebraska growers believe injury to susceptible soybean crops is caused by off-target movement of dicamba applied to corn.…
Greenskeepers and landscape managers may be losing their battle with annual bluegrass – an unsightly weed that competes with desirable turf and produces an uneven surface for golf and other sports.…
South Texas is a hyperdiverse region with wide variations in landscapes and native species. But that diversity is being threatened by invasive, exotic grasses.…
Cover crops are a proven tool for suppressing many troublesome weeds. But what about the residues they leave behind? Research featured in the journal Weed Science shows the composition of those residues matters – influencing both the control of summer annual weeds and the yields produced by crops.…
Many millions of homeowners use backyard feeders to attract birds, but researchers say there may be one downside to this popular hobby. …
Today the use of cover-crop mixtures has become commonplace. Surveys show most farmers use them and believe them to be superior to any single cover-crop species for weed control.…
Control of invasive brush on southwestern U.S. rangelands is a continual struggle. Industry-standard herbicide treatments typically knock brushy weeds back, but not out.…
Harvest-time weed seed controls have proven highly effective at reducing herbicide-resistant weeds in Australian cropping systems. One of the most popular tactics is the use of an impact mill that intercepts chaff as it exits the harvester.…
Buffelgrass is a drought-tolerant, invasive weed that threatens the biodiversity of native ecosystems in the drylands of the Americas and Australia.…
When it comes to weed control, today’s growers face a double whammy. Weeds have developed resistance to many of our existing herbicide options at a time when new herbicide discoveries have plummeted.…
Kochia has become one of the most problematic weeds in the U.S. – now resistant to at least four herbicide sites of action.…
When it comes to controlling invasive weeds, it can pay to think before you act. Do you want a quick, short-term reduction in a weed population or longer-term control?…
Corn and soybean growers in Nebraska are now facing their worst nightmare. A research study featured in the journal Weed Science shows a population of waterhemp has evolved resistance to four distinct herbicide sites of action – including PPO inhibitors, ALS inhibitors, EPSPS inhibitors and PS II inhibitors.…
Studies show that pH is one of the many factors impacting dicamba volatility. In fact, the EPA now requires a pH of 5.0 or higher in its registration of new dicamba formulations for dicamba-resistant crops.…
Sobering global survey data shows weeds have evolved resistance to 167 herbicides spanning 23 of 26 known sites of action. Now scientists writing in the journal Invasive Plant Science and Management say climate change and elevated levels of carbon dioxide (CO2) may be contributing to the development of herbicide resistance.…
Palmer amaranth and waterhemp are two troublesome amaranthus species weeds that are resistant to multiple herbicides. They also have unique reproductive features.…
Kochia is a highly invasive weed known to be resistant to multiple herbicides. In the Great Plains region, kochia populations have now evolved resistance to dicamba.…
Herbicide resistance is a costly and growing problem. In fact, many weed populations now exhibit resistance to multiple herbicide mechanisms of action.…
What if you had a simple, web-based app that could analyze weather data and issue an alert when pesky weeds are most likely to emerge and compete with your cash crop? …
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.…
Spring-applied herbicides are no match for henbit, a winter annual weed found in more than 50 crops – including corn, cotton and soybean.…
The period after a wildfire can offer a great window of opportunity for treating invasive plants. But scientists from the U.S.…
Italian ryegrass has become a weedy nuisance in California – often found in orchards and vineyards where fruits and nuts are grown.…
Fall-applied residual herbicides are often used to control glyphosate-resistant Italian ryegrass – especially in the Mid-South. But growers who use rice as a rotational crop need to beware.…
For more than a decade, growers have waged a high-profile battle against glyphosate-resistant pigweed. But pigweed is by no means the only weed resistant to glyphosate. …
Watermelon growers face tough weed control challenges. One example: Crop seedlings need to be planted with plenty of elbow room – leaving wide spaces where broadleaf and grassy weeds can become established and reduce yields.…
Organic growers can face tough challenges when it comes to weed control. But new research published in the journal Weed Science shows weather conditions and well-timed cultural management techniques can make a big difference.…
Which environmental factors are most important to the establishment of new plants of invasive species? Is it seed dispersal from existing plants?…
With the introduction of crops engineered for resistance to the auxin herbicides, concern has soared about unintentional injury to auxin-sensitive crops through off-target spray drift, volatility and spray tank contamination.…
A study featured in the journal Weed Science is certain to keep many corn and soybean growers up at night. Researchers have identified a waterhemp population in Missouri that is resistant to a record-breaking six herbicide mechanisms of action.…
Australian farmers have long considered harvest-time weed seed control their “last chance” opportunity to battle herbicide-resistant weeds that survive in-crop treatments.…
Chinese privet is a common fixture in the southeastern United States – typically found growing in dense thickets along roadsides, on rights of way and in forests. …
Today genetically engineered, glyphosate-resistant crops are often singled out as a major contributor in the evolution of herbicide-resistant weeds. But a new data analysis featured in the journal Weed Science shows it may be time to revisit that common assumption.…
Scientists at Purdue University have just answered an important question that has plagued many corn and soybean growers. Why does mixing glyphosate with other selective herbicides sometimes fail to control glyphosate-resistant giant ragweed plants?…
Cover-crop mulch has long been the weed control tactic of choice for organic no-till corn and soybean systems. But new research featured in the journal Weed Science shows that adding new control tactics can deliver much better results.…
What if you could predict which nonnative plant species would become invasive weeds and when? Would it change your weed management plan?…
Since the U.S. EPA’s 2005 ban of methyl bromide, winter strawberry growers have faced a perplexing dilemma. How do you control those pesky broadleaf weeds, grasses and nutsedge species that emerge through the transplanting holes in polyethylene mulch?…
Waterhemp is already one of the most problematic weeds in the Midwest and South. But researchers writing in the latest edition of the journal Weed Science say its control challenges are getting even tougher. …
Scientists have discovered an important new reason to focus on removal of invasive plant species. A recent study featured in the journal Invasive Plant Science and Management shows that removing invaders alongside a stream or river can greatly improve the biodiversity of aquatic organisms.…
New research featured in the journal Weed Science, shows “life history” traits may be contributing to crop losses by making Palmer amaranth more aggressive and difficult to control.
A new study featured in the journal Invasive Plant Science and Management shows the impact of weedy invaders can linger for years.
Scanning electron microscopic image of two spray hoses showing wear and possible adsorption sites for auxinic herbicides. See article by Cundiff et al.…
Cover crops are attracting widespread attention for the benefits they provide in crop rotations, especially for soil health. However, many growers of corn and soybean crops know it can be challenging to establish fall-seeded cover crops.
Researchers writing in the latest issue of the journal Weed Science provide important insights on the control of herbicide-resistant giant ragweed
The Weed Science Society of America (WSSA) and Cambridge University Press are pleased to announce the formation of a new publishing partnership beginning in January 2017.
The English language contains a wealth of insults and terms of abuse. Personal insults attack the core and immutable aspects of a person, such as their race, ethnicity, appearance, age, or a disability.…
Even though findings from genetics and other sciences unequivocally refute biological conceptions of race, this erroneous viewpoint remains widespread among the general public.…
A few months ago, we responded to a call for papers for a themed issue for Advances in Archaeological Practice entitled “Advances in Archaeological Labor Management.”…
The March article of Muses – the arts blog from BJPsych International is the first blog of the series. The blog is written by Dr Dami Ajayi, Specialty Doctor, Barnet Enfield and Haringey Mental Health NHS Foundation Trust and Trainee/Blog Editor, BJPsych International.…
As newly minted Editor and Co-Editor, we (Shelome Gooden and Mike Putnam) are delighted to invite you to explore the latest issue of Language, the flagship journal of the Linguistic Society of America, now available for the first time on Cambridge Core!…
Some disability-related names have dropped out of usage, because they are now considered to be offensive due to their origins. Down Syndrome (Trisomy 21) is one example.…
For over a century, the giant stone jars of northern Laos have remained one of Southeast Asia’s great archaeological mysteries. Scattered across remote ridgelines and forests on the Plain of Jars, these massive megalithic vessels have sparked debate over their true purpose: storage containers, symbolic monuments, or part of a complex mortuary tradition?…
How long will humankind survive? Besides the fact that we have been able to eliminate ourselves with nuclear weapons for decades, even without a third world war, the challenge to take care of the resources of our planet remains; we need to use them in a way that our children and their children can have a place on Earth as well. In this blog post Andreas Losch discusses his recent review article in the International Journal of Astrobiology, The need of an ethics of planetary sustainability
It is an article of faith among ordinary Filipinos that American troops will die with Filipino troops defending Philippine claims to the Spratly Islands in the South China Sea (SCS).…
Q&A with Editor-in-Chief of the Precision Medicine Journal, Dame Anna Dominiczak, for International day of Women and Girls in Science
More and more research is finding inflammation as a potential contributing factor towards to the development of various mental illnesses. A systematic review was conducted to determine the association between parasitic infection and mental illnesses in various African populations. Two parasite groups were evaluated; helminths and protozoans, and four mental illness classifications; depressive disorders, anxiety disorders, schizotypal disorders and unspecified mental illnesses.
This is the first post in our new series: “Conversations with Authors.” For our inaugural post, we asked Dr. Vesla Weaver to meet (virtually) with Dr.…
The March article of Muses – the arts blog from BJPsych International is the first blog of the series. The blog is written by Dr Dami Ajayi, Specialty Doctor, Barnet Enfield and Haringey Mental Health NHS Foundation Trust and Trainee/Blog Editor, BJPsych International.…
The English language contains a wealth of insults and terms of abuse. Personal insults attack the core and immutable aspects of a person, such as their race, ethnicity, appearance, age, or a disability.…
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Tom Sutcliffe with Paul Collier, Joanna Kusiak and Matthew Xia.
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