Herbicides Current Events

Herbicides Current Events, Herbicides News Articles.
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Quest for new plant protection substances mirrors search for new drugs
The costly, often-frustrating quest for new ways of preventing and treating diseases that strike vegetables, fruits, and other food crops bears striking similarity to the better-known saga of the pharmaceutical industry's pricey search for new drugs for humans. That's the topic of an article in the current edition of Chemical & Engineering News, ACS' weekly news magazine. (2011-04-20)

Research uncovers new weed control options for strawberry growers
Since the 2005 ban of methyl bromide by federal regulators, winter strawberry growers have had limited options for managing broadleaf weeds, grasses and nutsedge species. But new research featured in the journal Weed Technology shows drip-applied herbicides may help to fill the gap. (2017-11-30)

Herbicides may not be sole cause of declining plant diversity
The increasing use of chemical herbicides is often blamed for the declining plant biodiversity in farms. However, other factors beyond herbicide exposure may be more important to species diversity, according to Penn State researchers. (2014-02-04)

Commonly used herbicides seen as threat to endangered butterflies
A Washington State University toxicologist has found that three commonly used herbicides can dramatically reduce butterfly populations. The research was aimed at possible effects on the Lange's metalmark, an endangered species in northern California, but it has implications for other at-risk and endangered butterflies wherever herbicides are used, says John Stark, an ecotoxicologist and director of the WSU Puyallup Research and Extension Center. (2012-03-07)

Miscanthus has a fighting chance against weeds
University of Illinois research reports that several herbicides used on corn also have good selectivity to Miscanthus x giganteus (Giant Miscanthus), a potential bioenergy feedstock. (2011-01-10)

Time of day can impact spray
A University of Tennessee Institute of Agriculture study shows that some herbicides are more effective when applied at noon compared to early morning or late evening applications. Researchers say the results have long-term implications for weed management. (2016-02-22)

Newly identified rice gene confers multiple-herbicide resistance
A rice gene that renders the crop resistant to several widely used beta-triketone herbicides has been identified, researchers report, revealing the genetic cause of herbicide susceptibility that has been identified in some important rice varieties. (2019-07-25)

Over-the-top grass control in sorghum on the horizon
Apply today's chemicals to a sorghum crop for grass control and the sorghum will be killed off also. But a solution could be only a few years away if Texas AgriLife Research plots are any indication. Dr. Brent Bean, AgriLife Research and Texas AgriLife Extension Service agronomist, has test plots that demonstrate sorghum hybrids tolerant to herbicides typically associated with grass control. (2010-09-10)

Scientists find italian ryegrass is resistant to multiple herbicides
A team of scientists set out to determine if the paraquat-resistant population might also be resistant to other postemergence herbicides. Seven other herbicides commonly used in fruit tree and nut tree crops were included in the study, including clethodim, fluazifop-P-butyl, glufosinate, glyphosate, pyroxsulam, rimsulfuron and sethoxydim. (2018-11-23)

UQ researchers solve a 50-year-old enzyme mystery
Advanced herbicides and treatments for infection may result from the unravelling of a 50-year-old mystery by University of Queensland researchers. (2020-07-09)

Which direction are herbicides heading?
2,4-D is coming back. What many might consider a (2011-10-11)

Problems with herbicide-resistant weeds become crystal clear
Herbicide-resistant weeds are threatening food security, but University of Queensland researchers are one step closer to a solution after a new discovery. A UQ School of Chemistry and Molecular Biosciences study led by Associate Professor Luke Guddat uncovered how penoxsulam, the active ingredient in the world's largest-selling rice herbicide, works. (2018-02-13)

Herbicide resistance in waterhemp continues to grow
Populations of the broadleaf weed waterhemp have been found to be resistant to the class of herbicides known as HPPD-inhibitors. A University of Illinois study shows waterhemp resistant to HPPD-inhibitors were also resistant to several other classes of herbicides, making it even harder to control chemically. Weed management programs that do not rely exclusively on chemical methods may be the key to reducing waterhemp populations over time. (2016-04-20)

A new way to use herbicides: To sterilize, not kill weeds
Using herbicides to sterilize rather than to kill weedy grasses might be a more economical and environmentally sound weed-control strategy, according to a study by Agricultural Research Service scientists and a cooperator. (2010-05-05)

Integrated weed management best response to herbicide resistance
Over-reliance on glyphosate-type herbicides for weed control on US farms has created a dramatic increase in the number of genetically-resistant weeds, according to a team of agricultural researchers, who say the solution lies in an integrated weed management program. (2012-02-09)

Smoking out blackgrass seeds
Blackgrass is a problem weed in UK agriculture, but a new technique may help farmers to combat its resistance to herbicides. Application of a smoke particle solution called 'smokewater' has been found to cause blackgrass seeds to germinate early, becoming vulnerable to certain herbicides which they would normally evade. (2016-07-06)

Herbicide-tolerant crops can improve water quality
Researchers investigated the water quality effects of using residual versus contact herbicides on corn and herbicide-tolerant soybean. They found that losses of contact herbicides in surface runoff were usually much less than those for the residual herbicides, and never exceeded established or proposed drinking water standards. These results suggest that herbicide losses and concentrations in runoff can be reduced by planting herbicide-tolerant corn and soybean varieties and applying contact herbicides. (2008-04-22)

Research reveals widespread herbicide use on North American wildlands
University of Montana researchers are giving the public its first look at the widespread use of herbicides on federal and tribal land in North America, and they urge land managers to better document it. (2016-06-29)

Recent study documents damage to rice crops by three fall-applied residual herbicides
Fall-applied residual herbicides are a commonly used control for glyphosate-resistant Italian ryegrass -- one of the most troublesome weeds in Mid-South row crops. But research published in the journal Weed Technology shows rice growers need to be cautious. Some residual herbicides can have a negative impact on rice crop performance. (2018-11-15)

Herbicide diversity needed to keep Roundup effective
Using a diverse herbicide application strategy may increase production costs, but a five-year Purdue University study shows the practice will drastically reduce weeds and seeds that are resistant to a popular herbicide. (2009-07-13)

Fighting a mighty weed
Weeds are pesky in any situation. Now, imagine a weed so troublesome that it has mutated to resist multiple herbicides. Palmer amaranth, a member of the pigweed family, is spreading across states and growing in strength. If farmers and weed scientists cannot find a new solution, crop yields could decline substantially, according to an article in Chemical and Engineering News (C&EN), the weekly news magazine of the American Chemical Society.  (2019-08-07)

Atrazine alternatives in sweet corn
Atrazine has been very good at killing weeds in corn fields for more than 50 years. But some of the properties that make it a successful herbicide, such as its persistence in the soil and ability to be transported in water, also lead to concerns about potential environmental impact. At both federal and state levels, increasing restrictions on atrazine use has the sweet corn industry wondering about alternatives. (2016-07-19)

Superweed resists another class of herbicides, study finds
We've all heard about bacteria that are becoming resistant to multiple types of antibiotics. These are the so-called superbugs perplexing and panicking medical science. The plant analogue may just be waterhemp, a broadleaf weed common to corn and soybean fields across the Midwest. With resistance to multiple common herbicides, waterhemp is getting much harder to kill. (2019-06-11)

Organically grown foods higher in cancer-fighting chemicals than conventionally grown foods
Fruits and veggies grown organically show significantly higher levels of cancer-fighting antioxidants than conventionally grown foods, according to a new study of corn, strawberries and marionberries. The research suggests that pesticides and herbicides actually thwart the production of phenolics -- chemicals that act as a plant's natural defense and also happen to be good for our health. (2003-03-03)

Are we at a tipping point with weed control?
Imagine walking the cereal aisle at your favorite grocery store. Are you reading labels? Scanning prices? Thinking about weeds? If you're like most American consumers, weeds probably aren't at the forefront of your mind when buying food. But if farmers could no longer control weeds with existing herbicides, Americans would take notice pretty quickly. (2017-10-04)

Old herbicides enlisted in new 'war on the weeds'
The emergence of weeds resistant to the most widely used herbicide is fostering a new arms race in the war against these menaces, which cost society billions of dollars annually in control measures and lost agricultural production. That's the topic of a story in the current edition of Chemical & Engineering News, the weekly magazine of the American Chemical Society, the world's largest scientific society. (2012-05-23)

Farmers relying on roundup lose some of its benefit
Roundup Ready crops have made weed control much easier for farmers, but a new study shows their reliance on the technology may be weakening the herbicide's ability to control weeds. (2009-04-14)

One step closer to commercial edamame production in the US
Despite a long history of growing grain soybean, most edamame consumed in the US is imported from Asia. Edamame production in the US is limited by a lack of well-developed weed management practices, due largely to an earlier lack of herbicides registered for the crop. A combination of S-metolachlor with a follow-up application of imazamox was most effective in suppressing weeds and maintaining yield. (2016-02-04)

Researchers find cereal rye is effective at reducing Amaranthus spp. density in soybean crops
Fall-planted cover crops are often used as part of an integrated weed control program in herbicide-resistant soybean crops. But researchers writing in the journal Weed Technology say not all cover crops are equally effective against Palmer amaranth, waterhemp and other Amaranthus spp. weeds. (2017-09-15)

Study explores effects of herbicide drift on white oak
Herbicide drift, when pesticides (2009-03-25)

Study documents the challenges of herbicide-resistant annual bluegrass in turf
In an study featured in the journal Weed Science, researchers in Australia examined 31 populations of annual bluegrass suspected to be herbicide resistant. All 31 were found to be resistant to multiple turf herbicides. Three populations had evolved resistance to herbicides with five different mechanisms of action. (2020-06-05)

Herbicide rotation ineffective against resistance in waterhemp
Farmers have been battling herbicide-resistant weeds for generations. A common practice for most of that time has been to rotate between different herbicides every season. But despite farmers' best efforts, herbicide resistance has grown through the years, with some weed populations showing resistance to not one but four or five different herbicides. A new study from the University of Illinois explains why herbicide rotation doesn't work. (2017-09-06)

Two new mechanisms for herbicide resistance found in Palmer amaranth
Palmer amaranth is a nightmare of a weed, causing yield losses up to 80 percent in severely infested soybean fields. It scoffs at farmers' attempts at control, having evolved resistance to six classes of herbicides since its discovery in the United States 100 years ago. And now, scientists have discovered it has two new tricks up its sleeve. (2017-04-04)

Waterhemp rears its ugly head ... again
Waterhemp has done it again. University of Illinois researchers just published an article in Pest Management Science confirming that waterhemp is the first weed to evolve resistance to HPPD-inhibiting herbicides. (2011-01-26)

'Superweeds' linked to rising herbicide use in GM crops
A new study out of Washington State University finds that the use of herbicides in the production of three genetically modified herbicide-tolerant crops -- cotton, soybeans and corn -- has actually increased. This counterintuitive finding is based on an exhaustive analysis of publicly available data from the US Department of Agriculture's National Agriculture Statistics Service. Benbrook's analysis is the first peer-reviewed, published estimate of the impacts of genetically engineered herbicide-resistant crops on pesticide use. (2012-10-02)

Drifting herbicides produce uncertain effects
Farmers should take extra precautions so drifting herbicides do not create unintended consequences on neighboring fields and farms, according to agricultural researchers. (2014-02-10)

Weed's wily ways explained in Illinois research
Like antibiotic-resistant bacteria, some herbicide-resistant weeds can't be killed by available chemicals. The problem affects more than just the errant weed in our driveways; herbicide-resistant weeds threaten our food supply, stealing resources and outcompeting the crops that make up our breakfast cereal and feed the nation's livestock. (2020-06-17)

U of Minnesota receives NSF grant to sequence bacterial genome
The University of Minnesota has received a National Science Foundation grant of $699,245 for sequencing the genome of a soil bacterium that breaks down atrazine and other herbicides. (2003-10-20)

Variable weather makes weeds harder to whack
From flooded spring fields to summer hailstorms and drought, farmers are well aware the weather is changing. It often means spring planting can't happen on time or has to happen twice to make up for catastrophic losses of young seedlings. According to a joint study between University of Illinois and USDA-ARS, it also means common pre-emergence herbicides are less effective. (2021-02-08)

CRISPRed wheat helps farmers control weeds
Recently, a research team led by Profs. GAO Caixia and LI Jiayang at the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences (IGDB, CAS), together with Associate Prof. JIANG Linjian at China Agricultural University (CAU), generated several herbicide-tolerant wheat germplasms using base editing to facilitate weed control in wheat fields. (2019-04-15)

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