Category Archives

Archive of posts published in the category: Soybean
Apr
27

Soybean Losses Due to Diseases

Diseases significantly impact soybean production throughout the United States.  In Delaware, diseases such as Soybean Cyst Nematode, Root Knot Nematode, and stem canker can cause significant annual yield losses.  Plant pathologists throughout the United States collect disease loss data each year.  This data…

Dec
12

2017 Nematode Assay Service Note

The University of Delaware will not offer an open nematode assay service in 2017.  Growers and other professionals with urgent issues can contact their local extension agriculture agent or Dr. Nathan Kleczewski at 302-300-6962 or nkleczew@udel.edu for assistance with nematode identification, enumeration, and…

Dec
8

2016 Soybean Vein Necrosis Disease survey and Thrips Data now Available

We have been studying Soybean Vein Necrosis Disease in the Delaware/Maryland region since 2013 to better understand the disease and if it may have an impact on our soybean production.  The disease is caused by a virus, and moved from plant to plant…

Sep
9

Brown Stem Rot in DE Soybeans

Brown Stem Rot (BSR) is a fungal disease of soybeans that has never been positively confirmed in the Chesapeake Bay area, although suspect plants have been occasionally observed over the years.  We have not observed significant levels of this disease, but it will…

Jan
20

Research Updates on Soybean Vein Necrosis Virus

Soybean Vein Necrosis Virus (SVNV) is a relatively new virus of soybeans.  Currently, SVNV is the most prevalent virus in soybean production in the United States.  Surveys in Delaware in 2015 detected the virus in over 72% of fields, with 69% of full…

Nov
3

Nematode Assay Service open through November 13

The UD Nematode Assay Service will be open through November 13th, 2015.  After this time the assay service will be closed until the new year.  Below is the link to the service.  Please pay particular attention to sample submission guidelines. http://extension.udel.edu/ag/plant-diseases/nematology/  

Oct
26

The Mystery of Green Stem Disorder in Soybeans

Green stem disorder has been observed in many fields throughout Delaware and Maryland this season.  This disorder is characterized by plants that remain green in parts of a field, thereby preventing a timely harvest.  Sometimes green stem occurs in single plants, other times…

Oct
24

Correlation, Causation, and Scouting

Often, late season issues result in the submission of senesced, dead, or decomposing samples to extension plant pathologists or diagnostic clinics in the hope that an answer to a potential issue can be derived from such samples.  Unfortunately determining the potential cause of…

Oct
13

Soybean Cyst Nematode- Know your numbers

Soybean Cyst Nematode (SCN) is our most important and yield limiting “pathogen” in soybeans.  Now is the time to be checking your fields to have SCN egg numbers monitored.  Need to know more about SCN and how to sample?  Clink here for a…

Sep
4

Sudden Death Syndrome vs compaction and nutrient issues in soybeans

We have seen soybeans that are exhibiting  foliar symptoms that could be concerning to some people.  Unfortunately, Sudden death syndrome (SDS) has been claimed to be the culprit for these issues when in all likelihood it is not.  What might you see out…

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