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Yield-robbing disease threats

101215Soybeans-north-of-Mex

A plant pathologist says areas receiving excess moisture will probably see increased disease pressure this summer.

Dr. Dean Malvick with the University of Minnesota tells Brownfield Sudden Death Syndrome (SDS) is already a threat in wet soybean fields.

“That disease is favored by wet soils early in the season, as we’ve seen in some places already.  But we also need wet, or at least moist conditions generally through the first part of August.”

 Phytophthora root rot is another common disease in saturated soils.

“That is something we’ve already heard some reports of in certain places.  That’s another fungal-type disease that infects the roots and starts going up the stem causing brown discoloration.  And that is a disease I expect we’ll be seeing more of this year than we have in other years.”

 As the growing season progresses, Malvick says diseases like white mold and brown stem rot will join the list of soil-borne bacteria that thrive in soggy conditions and inhibit yield.

 

 

 

 

 

 

 

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