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Tag: "insecticide" at biology news

New study finds genetically engineered crops could play a role in sustainable agriculture

...modification, which causes the plant to produce an insecticide internally, can have an environmental benefit because large-scale insecticide spraying can be avoided. Organisms such as ladybird beetles, earthworms, and bees in locales with “B...

Secret of worm's poison pill box protein could produce new natural insecticide

...ies that make it a particularly efficient natural insecticide and possible alternative to some commercial insecticides that are facing increased resistance in the insect populations they target. The researchers at Warwick HRI, together with a team of colleagues with expertise in the Structural Biology grou...

Whitefly spreads emerging plant viruses

... control partly because of its tendency to develop insecticide resistance. "As the population levels of the whitefly B. tabaci continue to remain robust, new species of plant viruses will continue to emerge and cause damaging diseases in food and fiber crops," Brown said. Early virus and vector detection...

Most widely used organic pesticide requires help to kill

...ngiensis was developed as a commercially important insecticide in the 1950s. It is by far the most widely used natural agent to control important insect pests, and the genes that make Bt's toxic proteins have been engineered into numerous crop plants. Transgenic crops using the bacterium's genes are the most pre...

Biotech cotton provides same yield with fewer pesticides

...altered to produce Bt toxin, a naturally occurring insecticide that kills pink bollworm, a major pest of cotton. ...similar across cotton types because the additional insecticide applications on the non-Bt fields cut down on the damage from whiteflies and western tarnished plant...

Chemical in many air fresheners may reduce lung function

...dorizers, urinal and toilet bowl blocks, and as an insecticide fumigant for moth control. "Because people spend so much time indoors where these products are used, it's important that we understand the effects that even low levels might have on the respiratory system," said Leslie Elliott, Ph.D. a researcher...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...trol authorities took the rare step of applying an insecticide by air in August 2005. UC Berkeley researchers poi... hours after the second night's application. The insecticide contained a mixture of pyrethrin, a natural pesticide found in a type of chrysanthemum, and piperony...

Iraq's marshes show progress toward recovery

...e water, to identify sites of toxins, and to study insecticide use by local fishermen. ...

Pesticides in the nation's streams and ground water

... the frequently detected pesticides, including the insecticide diazinon and the herbicides alachlor and cyanazine, are declining. USGS has worked closely with the U.S. Environmental Protection Agency (EPA) during the 10-year study. EPA uses the data extensively in their exposure and risk assessments for regul...

Biotech cotton 8: Bugs 0

..." Since widespread adoption of Bt cotton in 1997, insecticide use on Arizona's cotton crops is down 60 percent, said Tabashnik. The reduction in chemical pesticide use saves growers about $80 per acre. According to the Arizona Agricultural Statistics Bulletin, the value of Arizona's cotton crops for 2004 was es...

Kenya halts first field trials of GM maize

...committee that the maize had been sprayed with the insecticide Furadan. Stephen Mugo, IRMA's project coordinator, says the incident was unfortunate and a major setback to Kenyan research, but that GM maize field trials would continue. "This is just like a battle we lost," said Mugo. "But the main war will cont...

DDT-resistant insects have additional genetic advantage that helps resistance spread

...umber of different compounds, so spraying with one insecticide can unexpectedly increase resistance to newer compounds subsequently introduced to try and overcome resistance. The World Health Organization estimates that during the period of DDT use, approximately 25 million human lives have been saved. Today py...

Vineyard weeds found to host Pierce's disease of grapes

...g populations of the insect vector, either through insecticide sprays or habitat modification to remove insect breeding host plants. Our study reinforces the need for weed control in irrigation ditches and roadsides adjacent to vineyards, in regions with chronic Pierce's disease and established populations of sh...

University of Nevada, Reno research team discovers hormone that causes malaria mosquito to urinate

...in Palo Alto, Calif. that developed methoprene, an insecticide that halts the maturation of insect larvae to adul...evastate crops. "It's not a great way to sell an insecticide to a farmer," Schooley said. "Most money in pesticide development is in making insecticides for pest...

Novel compounds show promise as safer, more potent insecticides

...t synthetic compounds designed to activate a novel insecticide target called the ryanodine receptor, may also help tackle the growing problem of insecticide resistance, the researchers say. They described their studies today at the 230th national meeting of...

Bugs, even 'bad' ones, can be educationally beneficial, new book says

...aced 60,000 fake cows made of cloth and steeped in insecticide on cattle ranches. Instances of infections dropped from 10,000 to 50 per year. These findings were reported in the journal Science in 2001. Not only do insects interact with people, some insect species share characteristics with humans, Waldbauer sa...

WHO Warns Of Increased Risk Of Vector-borne Diseases In Tsunami-affected Areas

...f vector surveillance measures, while family-sized insecticide impregnated bed-nets have been distributed to fami... (a day-time biting mosquito, hence the utility of insecticide treated bed-nets is very limited as a specific prevention tool), while malaria is spread through the...

Spider Venom Could Yield Eco-Friendly Insecticides

...s. The toxin-enhanced virus would act like a magic insecticide bullet, targeting only cotton bollworms, for examp...earchers inventory more kinds of venom and uncover insecticide leads, they may be able to target insects that transmit new and emerging human diseases, such as Lym...

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