News tagged with bt crops
Genetic engineers create smarter toxins to help crops fight resistant pests
One of the most successful strategies in pest control is to endow crop plants with genes from the bacterium Bacillus thuringiensis, or Bt for short, which code for proteins that kill pests attempting to eat ...
Oct 09, 2011 |
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GMO corn falls prey to bugs it was supposed to thwart
A voracious pest which has long plagued corn farmers is devouring a widely-used variety that was genetically modified to thwart the rootworms, raising fears of a new superbug.
Aug 30, 2011 |
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New insect birth control strategy zaps cotton pests
Using pests as part of an insect birth control program helps to get rid of them, UA researchers find. A new approach that combines the planting of pest-resistant cotton and releasing large numbers of sterile ...
Nov 07, 2010 |
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Insect resistance to Bt crops can be predicted, monitored and managed
Since 1996, crop plants genetically modified to produce bacterial proteins that are toxic to certain insects, yet safe for people, have been planted on more than 200 million hectares worldwide. The popularity of these Bt ...
Nov 23, 2009 |
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Search results for bt crops
Experts suggest steps to stop spread of resistant corn rootworms
(Phys.org) -- The discovery that more Western corn rootworms are resistant to the toxin contained in widely planted transgenic corn has sparked a warning that farmers must change tactics or lose a valuable management tool ...
Apr 23, 2012 |
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Genetically modified corn affects its symbiotic relationship with non-target soil organisms
An increasing number of crops commercially grown today are genetically modified (GM) to resist insect pests and/or tolerate herbicides. Although Bt corn is one of the most commonly grown GM crops in the Un ...
Apr 17, 2012 |
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Researcher tracks agricultural overuse of bug-killing technology
High corn prices are leading many growers to plant corn every year and to overuse pesticides and other bug-killing technology to maximize yields, researchers report. In many instances, pesticides are applied ...
Feb 29, 2012 |
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Entomologists devise new test for insecticide resistance
(PhysOrg.com) -- A 10-year study has led to a model that assesses the effectiveness of insect refuges in slowing evolution of resistance.
Jan 10, 2012 |
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Scientists refute Greenpeace claim that genetically modified corn caused new insect pest
An article in the forthcoming issue of the Journal of Integrated Pest Management (JIPM) refutes claims by Greenpeace Germany that the western bean cutworm (WBC), Striacosta albicosta (Smith), is "a new plant pest" that wa ...
Jan 06, 2012 |
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Bugs may be resistant to genetically modified corn
(AP) -- One of the nation's most widely planted crops - a genetically engineered corn plant that makes its own insecticide - may be losing its effectiveness because a major pest appears to be developing resistance ...
Dec 29, 2011 |
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New bacteria toxins against resistant insect pests
Toxins from Bacillus thuringiensis bacteria (Bt toxins) are used in organic and conventional farming to manage pest insects. Sprayed as pesticides or produced in genetically modified plants, Bt toxins, us ...
Oct 19, 2011 |
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Researchers identify insect resistance to Bt pesticide
For the first time, researchers have identified how cabbage looper caterpillars in the field develop resistance to the bacterium Bacillus thuringiensis (Bt), which naturally occurs in the soil and on plants ...
Aug 30, 2011 |
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Corn silage hybrids and seeding rates
Recent studies report that corn hybrids released in the late 2000s, especially Bt hybrids, require higher seeding rates than commercial hybrids released in the 1990s to reach maximum yields. Expectedly, corn seeding rates ...
Aug 11, 2011 |
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GM rice spreads, prompts debate in China
Genetically modified rice has been spreading illegally for years in China, officials have admitted, triggering a debate on a sensitive aspect of the food security plan in the world's most populous nation.
Jun 15, 2011 |
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List of search results for bt crops
