Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Should Roundup Ready soybeans be managed differently than conventional soybeans?

24.03.2004


Research in Agronomy Journal suggests producers reduce seeding rates when planting Roundup Ready varieties



Roundup Ready soybean acreage has drastically increased since their introduction in 1996. Approximately 84% of Wisconsin soybeans were planted to Roundup Ready in 2003 with similar trends cross the United States. While much research had been conducted with management of conventional soybeans, little had been conducted to see how Roundup Ready soybeans compare.

The study of the effect of adjusting management practices when using Roundup Ready soybean is published in the March-April issue of Agronomy Journal, published by the American Society of Agronomy. Authors are Michael Bertram, University of Wisconsin-Madison and Palle Pedersen, Iowa State University. The research was conducted under the direction of Dr. Edward Oplinger and was supported by the Wisconsin Soybean Marketing Board and Hatch Project 1890.


Soybeans have traditionally been grown in wide rows, but many producers in the northern Midwest plant in narrow rows to reduce disease severity and to increase yield. The research was conducted to test conventional and Roundup Ready soybean varieties from 1997 to 1999 at two locations in the southern, central, and the northern part of Wisconsin. These varieties were grown at three row spacings and three plant populations for each row spacing. Conventional varieties were grown with conventional herbicides while Roundup Ready varieties were grown with both conventional herbicides and Roundup.

Planting soybean in narrow (7.5 inches) or intermediate rows (15 inches) resulted in greater yield than wide rows (30 inches). Yields were similar with narrow rows and intermediate rows, suggesting this may be an alternative for producers with disease concerns.

In general, soybean yield increased when populations were raised from low to optimum, but did not increase from optimum to high. This would suggest that current seeding rate recommendations are adequate and similar for both conventional and Roundup Ready soybeans. However, Roundup Ready soybean yield was similar regardless of plant population in northern Wisconsin.

"The results indicate that management practices when using Roundup Ready varieties should be similar to conventional cultivars. However, when using Roundup Ready soybeans, it may be economically feasible to reduce seeding rates in parts of Wisconsin, as the results from northern Wisconsin demonstrated," says Bertram.


Online subscribers to Agronomy Journal can access the full article; nonsubscribers can access the abstract, or pay a $10 per-article fee, or buy a $25, 14-day site pass. The article is online at: http://agron.scijournals.org/cgi/content/abstract/96/2/462

Agronomy Journal, http://agron.scijournals.org is a peer-reviewed, international journal of agriculture and natural resource sciences published six times a year by the American Society of Agronomy (ASA). Agronomy Journal contains research papers on all aspects of crop and soil science including agroclimatology and agronomic modeling, military land use and management, environmental quality, international agronomy, agricultural research station management, and integrated agricultural systems.

The American Society of Agronomy (ASA), the Crop Science Society of America (CSSA) and the Soil Science Society of America (SSSA) are educational organizations helping their 10,000+ members advance the disciplines and practices of agronomy, crop and soil sciences by supporting professional growth and science policy initiatives, and by providing quality, research-based publications and a variety of member services.

Sara Uttech | EurekAlert!
Further information:
http://agron.scijournals.org/cgi/content/abstract/96/2/462
http://agron.scijournals.org
http://www.agronomy.org/

More articles from Agricultural and Forestry Science:

nachricht Trees and climate change: Faster growth, lighter wood
14.08.2018 | Technische Universität München

nachricht Animals and fungi enhance the performance of forests
01.08.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

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: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

Im Focus: Lining up surprising behaviors of superconductor with one of the world's strongest magnets

Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur

What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...

Im Focus: World record: Fastest 3-D tomographic images at BESSY II

The quality of materials often depends on the manufacturing process. In casting and welding, for example, the rate at which melts solidify and the resulting microstructure of the alloy is important. With metallic foams as well, it depends on exactly how the foaming process takes place. To understand these processes fully requires fast sensing capability. The fastest 3D tomographic images to date have now been achieved at the BESSY II X-ray source operated by the Helmholtz-Zentrum Berlin.

Dr. Francisco Garcia-Moreno and his team have designed a turntable that rotates ultra-stably about its axis at a constant rotational speed. This really depends...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

2018 Work Research Conference

25.07.2018 | Event News

 
Latest News

Early opaque universe linked to galaxy scarcity

15.08.2018 | Physics and Astronomy

Molecular switch detects metals in the environment

15.08.2018 | Materials Sciences

Seeing on the Quick: New Insights into Active Vision in the Brain

15.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>