Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Bt sweet corn can reduce insecticide use

07.10.2013
A new study finds that genetically modified sweet corn is better for the environment and safer for farm workers

Since 1996, corn containing a gene that allows it to create a protein that is toxic to certain insects, yet safe for human consumption, has been grown in the United States.

However, most of this "Bt corn" has been used for animal feed or processed into corn meal, starch, or other products. Although varieties of sweet corn (corn on the cob) have existed since the late 1990s, relatively few acres have been planted.

Due to pressure from activist groups, some grocery stores have refused to carry Bt sweet corn. However, a new study published in the Journal of Economic Entomology suggests that Bt sweet corn is better for the environment because it requires fewer pesticide applications than conventional corn.

"Our data suggest that using Bt sweet corn will dramatically reduce the use of traditional insecticides," the authors wrote. "Based on the performance of Bt field corn, growers should realize increased profits and there will be less risk to nontarget organisms, including natural enemies that help suppress pest densities."

The study, "Multi-State Trials of Bt Sweet Corn Varieties for Control of the Corn Earworm (Lepidoptera: Noctuidae)," analyzed the performance of Bt sweet corn, comparing its rate of infestation and marketability to genetically identical varieties that lacked Bt proteins. In 2010 and 2011, sweet corn trials were conducted in New York, Minnesota, Maryland, Ohio and Georgia, locations that differ in climate, management practices and pest pressure. The authors found that for pest management of the corn earworm, Bt sweet corn consistently performed better than its non-Bt counterparts, even those that were sprayed with conventional insecticides.

"Across multiple states and multiple years, Bt sweet corn performed better and required fewer sprays to meet market standards," said Cornell entomology professor Anthony Shelton. "One of the most spectacular examples occurred in New York plots in 2010: the Bt sweet corn had 99 to 100 percent marketable ears without any sprays and, even with eight conventional insecticide sprays, the non-Bt corn had only 18 percent marketable ears. This wasn't much better than the 6 percent marketable ears produced in the plots that received no sprays at all."

The authors predict that growers could realize increased profits with Bt sweet corn because of lower inputs and higher marketability, while simultaneously conserving populations of beneficial insects that keep damaging pests at bay.

"The use of Bt vegetables could significantly reduce the use of conventional insecticides and, in turn, reduce occupational and environmental risks that arise from intensive insecticide use," Shelton said.

Journalists who would like an advanced copy of the article should write to rlevine@entsoc.org.

The Journal of Economic Entomology is published by the Entomological Society of America, the largest organization in the world serving the professional and scientific needs of entomologists and people in related disciplines. Founded in 1889, ESA today has more than 6,500 members affiliated with educational institutions, health agencies, private industry, and government. Members are researchers, teachers, extension service personnel, administrators, marketing representatives, research technicians, consultants, students, and hobbyists. For more information, visit http://www.entsoc.org.

Richard Levine | EurekAlert!
Further information:
http://www.entsoc.org

More articles from Agricultural and Forestry Science:

nachricht Energy crop production on conservation lands may not boost greenhouse gases
13.03.2017 | Penn State

nachricht How nature creates forest diversity
07.03.2017 | International Institute for Applied Systems Analysis (IIASA)

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>