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Tag: "herbicide" at biology news

Roundup®highly lethal to amphibians, finds University of Pittsburgh researcher

The herbicide Roundup® is widely used to eradicate weeds. But a ...nd that Roundup®, the second most commonly applied herbicide in the United States, is "extremely lethal" to amphibians. This field experiment is one of the most ...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

...ified an ant species that produces its own natural herbicide to poison unwanted plants. Stanford University b...ts of the western Amazon to see how widespread the herbicide phenomenon is. "Megan's work reveals a system that is amazing because the ants exert so much contro...

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, ...

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...

Exposure to dioxins influences male reproductive system, study of Vietnam veterans concludes

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...

First biomarker for human sleepiness identified in fruit flies

...e 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 ...

New system could drastically reduce herbicide use

...tial to control weeds while significantly reducing herbicide use. The robot uses GPS for navigation, and there...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 applie...

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...

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...

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,...

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