Tag: "herbicide" at biology news
Can hemp help the everglades?
...estigations have shown that cover crops can reduce herbicide
leaching; however groundwater quality has not been widely observed and the effectiveness of cover crops on water contamination has not been documented. The studies revealed that atrazine and some of its products may seep into the groundwater and im...
Biocontrol of invasive water hyacinth contributes to socioeconomic and health improvements in Africa
...estruction of the weed started by the insects. No herbicide
spraying was used in the Ugandan program, only mechanical removal and biocontrol, yet by 2000, 90% of the weed was cleared from the lake. The result of this remarkable program resulted in reduced cases of disease, increased power generation, and in...
Early environmental exposure may accelerate age-related neurodegeneration
...ombination with exposure later in life to a common herbicide
may contribute to the subsequent degeneration of b...h early exposure to iron and later exposure to the herbicide
paraquat independently increase oxidative stressan environment in which damage from levels of reacti...
Research group gets $7 million to pursue new antibiotic agents
...al activity of some known phosphonates,such as the herbicide
phosphinothricin. The van der Donk and Zhao groups have investigated the clinically used phosphonate, fosfomycin. Kelleher, a biological mass spectroscopist, has constructed several new, high-resolution Fourier Transform mass spectrometers, which w...
Salamanders suffer delayed effects of common herbicide
Pollution from a common herbicide
might be causing die-offs in stream salamanders, according to biologists who say findings from their long-term study raise concerns over the role of atrazine in global amphibian declines. The results also suggest that while impacts of the herbicide,...
ACS News Service Weekly PressPac -- March. 14, 2007
... forms of glyphosate, the active ingredient in the herbicide
Roundup. The new compounds are photosensitive, able to change from liquids into polymers when exposed to light. Laboratory tests showed that the compounds had herbicidal action against strains of algae, E. coli and other organisms. Those two charac...
News tips from the Journal of Neuroscience
...and the oxidative stress caused by exposure to the herbicide
paraquat. They looked at heterozygous mutations in genes involved in dopamine (DA) biosynthesis: pale ( ple) , which encodes tyrosine hydroxylase (TH), and punch (Pu) , which encodes GRP cyclohydrolase I (GTPCH), a synthesizing enzyme of the TH co...
Plant biologist seeks molecular differences between rice and its mimic
...ultivated rice are exactly the same species, so an herbicide
cannot be developed that seeks out only red rice. It would kill cultivated rice, too. But now a plant evolutionary biologist at Washington University in St. Louis has been funded by the National Science Foundation (NSF) at $1.12 million for...
First biomarker for human sleepiness identified in fruit flies
...ile methamphetamine did not. Flies dosed with the herbicide
paraquat did not have increased amylase levels, suggesting changes in amylase activity were not related to stress. Flies lacking the gene for amylase had normal sleep and waking cycles, showing that while amylase is tightly linked to sleep drive, it ...
Exposure to dioxins influences male reproductive system, study of Vietnam veterans concludes
...AS Nov. 16, 2006 A dioxin toxin contained in the herbicide
Agent Orange affects male reproductive health by l...ng, paper and pulp manufacturing and pesticide and herbicide
production. Humans are exposed to these chemicals primarily through consumption of animal fat and ...
USGS at Society of Environmental Toxicology and Chemistry
.... Laboratory studies have shown that low levels of herbicide
exposure can actually increase growth rates of aqu...ecies. Researchers studied the effects of atrazine herbicide
on both native and non-native, invasive aquatic plants in experimental ponds over a period of 42 day...
Fake pesticides threaten food safety
... the problem. In February this year, a counterfeit herbicide
used in Italy was found to contain quantities of a potentially dangerous insecticide. In 2004, hundreds of hectares of wheat were wiped out in France, Italy and Spain because of a fake herbicide. And a 2002 study of supermarket produce in the UK foun...
Researchers report initial success in promising approach to prevent tooth decay
... with dandelions," he said. "If you use a general herbicide
and kill everything there, the dandelions will come back first. But if you use a dandelion-specific killer and let the grass fill in the lawn, the dandelions won't come back." Hoping to solve the selectivity issue, Shi and his colleagues began atta...
Of I robots go solar; new system could drastically reduce herbicide use
...tial to control weeds while significantly reducing herbicide
use. The robot uses GPS for navigation, and ther...ayer cuts the weed, while the second layer applies herbicide
to the cut weed. "This type of application is extremely effective," said Tian, "because it applies...
Fight weeds with plant pathogens
...ce, FL. "Plant pathogens may also be used when the herbicide
selection or usage must be rotated with other control methods in order to prevent the development of resistant weeds or lessen the impact of herbicides on the environment," she said. Weed management is important due to the amount of damage weeds ca...
New flood-tolerant rice offers relief for world's poorest farmers
...e will be useful in suppressing weeds and reducing herbicide
applications for conventional and organic rice farmers in developed countries like the United States. If water can be left on the rice for an additional week, it is expected that weed populations will decrease. The research team is now trying to id...
New flood-tolerant rice offers relief for world's poorest farmers
...ne will beuseful in suppressing weeds and reducing herbicide
applications forconventional and organic rice farmers in developed countries like theUnited States. If water can be left on the rice for an additionalweek, it is expected that weed populations will be reduced. The research team is now trying to ide...
Pesticides in the nation's streams and ground water
...ng and after the study. For example, levels of the herbicide
alachlor declined in streams in the Corn Belt (gen... and the levels of atrazine, the most heavily used herbicide
in the Corn Belt region, remained relatively high throughout the study period." In addition, DDT, d...
Pesticide combinations imperil frogs, probably contribute to amphibian decline
...critical developmental period takes place when the herbicide
is at its lowest, Hayes suspects that not all frogs would be expected to adapt, or to adapt quickly enough, to survive. Plus, delayed maturation comes at the risk of having the pond turn into a puddle and dry up before the frog completely metamorphos...
Study in Royal Society journal on first observation of giant squid in the wild
...FSEs) have already shown that genetically modified herbicide
tolerant (GMHT) crops can affect biodiversity, not because of the way the crops are bred, but rather because of the different herbicides that are used with them. This study considers longer-term effects, by looking at weed seedbanks in the fields use...