Will You Need to Treat for Soybean Aphid This Year?
As soybean fields enter seed set, growers are getting concerned about late-season soybean aphid infestations. So far, much of the state has experienced very low aphid populations.
Integrated Crop Management News
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Stink Bugs on the Move
By Rebekah Ritson and Erin Hodgson, Department of Entomology
Soybean Sudden Death Syndrome in a Flood Year - What to Do Next
By XB Yang, Department of Plant Pathology, Iowa State University
Soybean Sudden Death Syndrome (SDS) is widespread in Iowa. This year has had one of the worst epidemics since the disease was found in Iowa in 1994. Severely infested soybean fields can be found in every region in Iowa. It is easy to spot brown patches caused by SDS while you are driving the highways. Fields with large portions of premature defoliation can be found in early August.
Add Another Soybean Defoliator to the Mix
Imported longhorned weevils have been regularly collected in sweep net samples from soybean this year. A few reports of weevil damage in soybean are reported in Iowa annually since 1994.
Crop Minute Week of August 2
Crop diseases making an appearance in Iowa are the topic for Daren Mueller, extension plant pathologist, in this week's crop minute.
Common, Weird and Unusual Spots Showing up on Corn
Reports of leaf spots showing up on corn include common and less common diseases, along with just plain weird marks left by pests.
Mid-Season Flooding: Impact on Corn Ear Fill
By Roger Elmore and Lori Abendroth, Department of Agronomy
Severe, localized flooding has occurred recently in eastern Iowa specifically Delaware, Jones, and Jackson counties. For some producers, their corn fields had flood waters up to the tassel. The impact on the corn crop is in question and possible outcomes are discussed here.
Be on the Lookout for Soybean Diseases
While there is little you can do to manage soybean diseases at this point of the season, information gathered from scouting fields now is valuable for crop management in the future.