Bt corn & European corn borerlong-term success through resistance management
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University of Minnesota] , [St. Paul, MN
European corn borer -- Con
|Other titles||Bt corn and European corn borer|
|Statement||[authors and contributors, J.F. Witkowski ... et al.].|
|Series||North Central regional extension publication ;, NCR 602, North Central regional extension publication ;, 602.|
|Contributions||Witkowski, John Frederick.|
|LC Classifications||S26 .N67 no. 602|
|The Physical Object|
|Pagination||16 p. :|
|LC Control Number||2003273164|
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"Bt Corn and European Corn Borer" was co-authored and sponsored by members of the North Central Regional Technical Committee on "Ecology and Management of the European CornCited by: Abstract. Genetically engineered Bt (Bacillus thuringiensis) corn provides farmers with a new tool for controlling the European corn borer (ECB).The high efficacy and potential rapid adoption of Bt corn has raised concerns that the ECB will develop resistance to by: Bt Corn & European Corn Borer Seed companies are now marketing Bt corn, one of the first tangible fruits of biotechnology that has practical implications for U.S.
and Canadian corn farmers. Managing European corn borer resistance to Bt corn with dynamic refuges Abstract Genetically engineered Bt (Bacillus thuringiensis) corn provides farmers with a new tool for controlling the European corn borer (ECB).
The high efficacy and potential rapid adoption of Bt corn has raised concerns that the ECB will develop resistance to Bt. European corn borer resistance confirmed to Cry1F Bt corn.
This is the first case of European corn borer resistance to any type of Bt corn. Watch out for and report unexpected corn borer damage in any type of Bt field and follow these recommendations. Christina DiFonzo, Michigan Bt corn & European corn borer book University Extension, Department of Entomology - Insects in Corn (The Corn Grower's Guide Book), Agronomy Department, Purdue University, West Lafayette, USA.
Subsection of Chapter 2 "Management Information". Information on European Corn borer, armyworm, rootworms, black cutworm, aphids, spider mites and many others. Management information like Bt-corn or diagnostic. A good starting point for. European corn borer. Bacillus thuringiensis (Bt) is an insecticide with unusual properties that make it useful for pest control in certain situations.
Bt is a naturally occurring bacterium common in soils throughout the world. Several strains can infect and kill insects. Because of this property, Bt has been developed for insect control. YGCB – The YieldGard ® Corn Borer gene offers a high level of resistance to European corn borer, southwestern corn borer and southern cornstalk borer; moderate resistance to corn earworm and common stalk borer; and above average resistance to fall armyworm.
YieldGard ®, the YieldGard Corn Borer design and Roundup Ready ® are registered trademarks used under license from Monsanto.
Severe European corn borer infestations in non-Bt cornfields have recently been documented in other states. European corn borer can be successfully managed in non-Bt cornfields, however successful management requires a season-long scouting plan.
Description Bt corn & European corn borer FB2
Scouting. Scouting for European corn borer should begin once extended leaf height exceeds 17 to A Flurry of European Corn Bt corn & European corn borer book Activity, and Bt-Corn for '99. Aug As I have stated previously, European corn borers have been conspicuous by their absence this summer.
I recently returned from a series of seminars for dealers in Illinois, Ohio, Michigan, Iowa, and Missouri, and the story is the same throughout most of the Corn Belt. Planting non-Bt corn refuges is required for all types of Bt corn, whether or both, and whether the brand is YieldGard or Herculex.
The basic rule is 20% non-Bt corn refuge and 80% Bt corn, again regardless of target insect or brand of corn grown. For transgenic Bt corn for rootworm control, the. Introduction: In this lab, you will use a simulation to further your understanding of independent and dependent variables.
You will be studying the level of European Corn Borer infestation in various environments. Open the Simulator at: (alternately, use google to search for "mhhe virtual labs") 1.
Read the introduction. Bt corn been made resistant from corn borer disease by intoduction of the gene - European corn borer resistance to Bt (Bacillus thuringiensis) corn. European corn borers that have developed resistance to corn hybrids expressing the Bt insect control trait known as Cry1F have been found in Nova Scotia in both King's County and Colchester County.
Bt corn is a variant of maize that has been genetically altered to express one or more proteins from the bacterium Bacillus thuringiensis including Delta protein is poisonous to certain insect pests.
Spores of the bacillus are widely used in organic gardening, although GM corn is not considered organic. The European corn borer causes about a billion dollars in damage to corn. The Bt subspecies kurstaki is toxic to certain caterpillars, including the European corn borer.
After a caterpillar ingests the protein, the crystal breaks down and releases a toxin that attacks the gut lining. The insect stops feeding within a few hours, and it dies within a couple of days. Managing European Corn Borer Resistance to Bt Corn / 3 used in the old technology, resistance management is more valuable than when two new toxins are introduced.
Therefore, if the first-best policy is not to exhaust susceptibility before the new technology arrives, more refuge is optimal in the case of a backstop dependent on the old technology.
Details Bt corn & European corn borer EPUB
% control of all lepidopteran pests of sweet corn. All Bt sweet corn hybrids, regardless of whether single or pyramided traits, provide % protection against European corn borers, thus no insecticides are needed during the whorl or tasseling stages, or even during silking if this pest is the only concern.
Resistance Management for European Corn Borer and Bt Transgenic Corn: Refuge Design and Placement. Nebraska Cooperative Extension NebFacts NF00.
Corn borers can attack corn planted at any time, but usually first generation damage can be worse in early planted corn and late planted corn is more severely damaged by second generation European corn borer and southwestern corn borer as well as corn earworm, fall armyworm, and black cutworm.
European Corn Borer (Bt-ECB) (e.g. YIELDGARD, YIELDGARD CORN BORER, HERCULEX I, NATUREGARD, KNOCKOUT) 8 Stacked gene variety with both genetically-modified Bt-CRW and herbicide resistant (e.g. YIELDGARD ROOTWORM WITH ROUNDUP READY CORN 2, HERCULEX CW + ROUNDUP READY CORN) 4 Genetically-modified Bt variety for insect resistance to control the.
"Bt Corn and European Corn Borer" was co-authored and sponsored by members of the North Central Regional Technical Committee on "Ecology and Management of the European Corn Borer and Other Stalk-Boring Lepidop-tera," NC, including: Experiment Stations and Extension Services of Colorado,File Size: KB.
EUROPEAN CORN BORER and Bt: SUMMARY.
Download Bt corn & European corn borer FB2
14 EUROPEAN CORN BORER: LIFE CYCLE. 15 EUROPEAN CORN BORER: LIFE CYCLE. 16 EUROPEAN CORN BORER: LIFE CYCLE Photo: Jan Samanek, Phytosanitary Administration, 17 November-April May June July August September October Larva Eggs Moth Pupa Larva Eggs.
Mitigation Recommendations for European Corn Borer Resistance to Bt Corn (Cry1F) in the Maritimes. Infield corn planted in Nova Scotia resulted in Unexpected damage (UXD) reports indicating the presence of populations of European corn borer (ECB) resistant to a single Bt.
Bt Corn & European Corn Borer Seed companies are now marketing Bt corn, one of the first tangible fruits of biotechnology that has practical implications for U.S. and Canadian corn farmers. Bt corn hybrids produce an insecticidal protein derived from the bacterium Bacillus thuringiensis, commonly called by: Fields with chronic corn borer problems can be planted to the BT-corn borer corn varieties for control.
However, if the BT-corn varieties are planted, growers must plant a BT-free refuge according to the label requirements. The widespread planting of BT-Cornborer corn has dramatically reduced the corn borer populations across NYS. European corn borer damage and fungal infection in non-Bt (left) and Bt hybrids following manuyal infestation with second-generation corn borer larvae.
This image appears in the following article: Disease control with Bt corn (January, ). and Vip3A genes for corn earworm, European corn borer, fall armyworm and black cutworm resistance and older Attribute varieties, which have the Cry1Ab gene for corn earworm and European corn borer resistance.
Several non-transgenic varieties, representative of each kernel color and isolation group were included as standard varieties. Previous research in Pennsylvania suggested that corn borer was responsible for about a % yearly yield reduction in field corn; however, because of widespread adoption of insect-resistant, transgenic corn hybrids (i.e., Bt hybrids) beginning inECB populations appear to have declined in many parts of Pennsylvania, reflecting national.
It was recently confirmed that European corn borer (ECB) has developed resistance to the Cry1F protein in Bt corn in Nova Scotia. More information on this issue can be found here: Canadian Corn Pest Coalition Mitigation Recommendations for European Corn Borer Resistance to Bt Corn (Cry1F) in the Maritimes.
Thanks goes to Dr. Jocelyn Smith and Dr. Art Schaafsma at the University of. Southwestern corn borer - levels of control and differences among the technologies similar to that listed for European corn borer in Table 1.
Bt corn is an effective control option for southwestern corn borer. Black cutworm - The Bt corn hybrids that use the CryIA(b) and .Planting Bt transgenic corn in large areas of the environment may lead to European corn borer (ECB) [Ostrinia nubilalis (Hübner)] resistance to Bt ists recommend planting a non-Bt corn refuge of at least 20% of total corn area in close proximity to Bt corn as part of an Insect Resistance Management (IRM) strategy.Introduced into North America, the European corn borer (ECB) probably came in "broom" corn from Hungary or Italy around It was first identified in Massachusetts in from where it spread west to Nebraska in as a two-year generation ('bivoltine') strain.
Corn is its preferred or primary host but it can infest some plants including dry bean, soybean, and.
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