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Researchers identify how insects resist Bt pesticides

Cornell University 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 and has been developed into a successful and widely used biological insecticide.

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  • Mar. 8, 2012
    video

    New corn rootworm trait from Syngenta to hit markets in 2014 pending approval 1

    Chuck Leonard, key account agronomist for Syngenta, says that Agrisure Duracade is a "game-changing" technology. The new corn rootworm trait is in testing now and on schedule to be released commercially in 2014. Leonard explains the benefits and ways farmers can manage resistance....More
  • Sep. 20, 2011
    Article

    Researchers identify how insects resist Bt pesticides 1

    Cornell University 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 and has been developed into a successful and widely used biological insecticide....More
  • Aug. 25, 2011
    Article

    Rootworm damage found in Illinois Bt cornfields

    Corn rootworm damage to Bt corn in Illinois was discovered by University of Illinois entomologist Mike Gray. Earlier in August, similar root damage was found in Iowa. Experts advise growers to consider seed alternatives for 2012....More
  • Aug. 17, 2011
    Article

    Rootworms show resistance to Bt corn in Midwestern fields

    Isolated findings of resistant rootworms in Iowa emphasize that planting a refuge is more critical than ever for maintaining the durability of Bt corn, a Purdue Extension entomologist says....More
  • Aug. 16, 2011
    Article

    Monsanto responds to Bt resistance study 1

    Monsanto responds to the recent study conducted y Aaron Gassmann, Iowa State University, documenting the first case of corn rootworm resistance to Bt hybrids expressing the Cry3Bb1 toxin....More
  • May 23, 2011
    article

    EPA approves Syngenta's new Viptera corn trait

    The EPA recently granted registration approval for Syngenta’s Agrisure Viptera 3220 corn trait stack....More
  • May 12, 2011
    article

    Late planting's impact on corn and soybean insects

    Questions are surfacing about the impact of late planting on key insect pests of corn and soybeans, said Mike Gray, University of Illinois Extension entomologist....More
  • Apr. 25, 2011
    video

    Pioneer Hi-Bred's Optimum AcreMax 1 includes rootworm refuge in the bag

    Pioneer Hi-Bred's first refuge-in-a-bag product, Optimum AcreMax 1, has seen strong sales for 2011, according to Bill Belzer, senior marketing manager, North America corn. The next generation of refuge products should be approved for use in 2012....More
  • Apr. 22, 2011
    blog

    Refuge-in-a-bag product planted in Kansas

     With planting now well under way in some areas of the country, Dow AgroSciences says its first bag of Refuge Advanced – the company’s refuge-in-a-bag product – has been planted in a field near Silver Lake, Kan. Refuge Advanced powered by SmartStax contains a blend of 95 percent SmartStax seeds and 5 percent non-insect-traited refuge seeds. The company received EPA registration on April 8....More
  • Apr. 11, 2011
    blog

    Monsanto receives approval of refuge-in-a-bag product

    Monsanto just received full regulatory approval for a single-bag refuge product for corn. The product is called Genuity SmartStax RIB Complete and can be planted across a corn grower’s entire field. It is a blend of 95% Genuity SmartStax corn seed and 5% refuge (non-Bt) seed. No separate, structured refuge is needed for either above- or below-ground pests in the Corn Belt. Monsanto does caution that growers planting Genuity SmartStax without the RIB Complete will still need a refuge....More
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