Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Diseases in soybeans could cause yield loss at harvest time

21.09.2010
As soybean fields are ready to be harvested, many in Indiana still show symptoms of sudden death syndrome and brown stem rot, says a Purdue University crop disease expert.

Yield losses from both are hard to predict and depend on the variety planted and growth stage of the crop when symptoms first appear, said Kiersten Wise, assistant professor in the botany and plant pathology department.

Sudden death syndrome is a fungal disease caused by the soilborne fungus Fusarium virguliforme. Symptoms of SDS include yellowing and discoloration of the upper leaves. The first symptoms typically appear in a few small strips or areas of the field, usually in wet or compacted areas. As the disease progresses, the leaf tissue between the major veins turns yellow, then dies and turns brown.

"There are several management practices that may prevent SDS damage, but once symptoms are present, there is not much that can be done," Wise said.

Producers should plant varieties that are less susceptible to SDS in fields with a history of the disease. SDS is typically more of a problem in early-planted soybeans, like those planted this year in April or early May, Wise said. Planting fields with a history of SDS last and avoiding compaction in those fields may reduce risk of disease development.

Symptoms of brown stem rot can often resemble those of SDS, so it is important to split the lower stem of suspected plants to determine which disease is present, Wise said. BSR can cause internal stem browning, resulting in a dark brown discoloration of the pith at the lower nodes of the plant. If SDS is present, the pith will remain white, and the cortex will be gray or brown.

"It is important to determine if the diseases are present in fields and, if they are, keep good field notes to identify problem areas and plan to manage these fields accordingly the next time soybeans are planted in these fields," Wise said.

For more information on SDS and BSR visit, http://extension.entm.purdue.edu/pestcrop/2010/issue23/index.html

Writer: Jeanne Gibson, 765-496-7481, jegibson@purdue.edu

Source: Kiersten Wise, 765-496-2170, kawise@purdue.edu

Ag Communications: (765) 494-2722;
Keith Robinson, robins89@purdue.edu

Elizabeth K. Gardner | EurekAlert!
Further information:
http://www.purdue.edu

More articles from Agricultural and Forestry Science:

nachricht New gene for atrazine resistance identified in waterhemp
24.02.2017 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

nachricht Researchers discover a new link to fight billion-dollar threat to soybean production
14.02.2017 | University of Missouri-Columbia

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: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>