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Disease Management

SCN in Soybeans: Do I have an issue?

As I drove around Southern IL this summer, I noticed a lot of fields that have areas in them that were showing the symptomology of Soybean Cyst Nematode (SCN). Often these spots are stunted, yellow and just generally not in good health. Now, there are a lot of reasons for soybeans to show this symptomology, and very likely not every one of these spots were SCN, but SCN counts have been on the rise over the last few years and now is a great time to be testing for the pest. SCN, like all nematode species, is an unsegmented [...]

By |September 15, 2021|

Use Your Toolbox to Control White Mold Infections

As the growing season progresses and we near harvest, Illinois soybean growers often see increased disease symptomology in their fields. They may wonder what can be done to combat diseases once symptoms appear, but with some pathogens the infection occurs many weeks prior to the onset of visible signs of disease. Once the infection is apparent, it is often too late for effective control. The best-known illustration of this is Sudden Death Syndrome (SDS), but white mold is another example. Figure 1 shows very early symptoms of the disease appearing in the upper canopy. Although it may be too [...]

By |September 14, 2021|

Sudden Death Management Considerations for Soybeans

This year continues to challenge what soybean producers consider to be “normal.” I met with one grower recently who described the month of June as polarized. He stated that on his farm, he went from 5-inches behind on monthly rain fall to 5-inches over in a period of 10 days. If that wasn’t enough rain, then the 18 inches we received on our farm in July certainly was. Yes, you did just read “enough,” “rain,” and “July” in the same sentence. Photo: Sudden Death Syndrome Foliar Symptoms. Photo Credit - Crop Protection Network I have been concerned about one [...]

By |August 6, 2021|

Have You Applied Your Soybean Fungicide Yet?

As regular visitors of ILSoyAdvisor are aware, fungicides are an important component of a high-yielding soybean system. Progressive growers have become increasingly aware of the value of fungicide application not only for disease control, but also for improved stress tolerance and plant health. Perhaps surprisingly, many of today’s most popular varieties with the most inherent yield potential also show the biggest responses to fungicide applications. In fact, varietal response to fungicides appears to be increasing. There are several potential reasons for this phenomenon. One is that modern varieties are often more robust in their growth habits, with more branching [...]

By |August 6, 2021|

Understanding Seedling Diseases & Seed Treatments, Recap of Summit Breakout

During the first session of the 2021 Soybean Summit on February 10, I had the opportunity to learn from Dr. Kleczewski’s presentation, “Seedling Disease and Seed Treatment-What’s the deal?” If you were unable to attend this session, I would like to provide some insight on the topic. I hope after reading this blog you will be energized to follow this link and watch the full presentation: Seedling Diseases and Seed Treatments – What’s the Deal? - YouTube How do seedling disease impact a crop? Seedling diseases are soil borne and will infect a soybean after planting through emergence. Infection [...]

By |March 2, 2021|

University of Illinois Applied Research Results Now Available

University of Illinois researchers publish an annual report of applied research conducted on insect and disease management in soybean and corn. The 2020 report is now available for free download here. Highlights from the 2020 guide related to soybean management include the following: Surveys for soybean insects and diseases, including red crown rot, soybean gall midge (which was not found in Illinois in 2020), and the annual statewide survey of insect pests. Fungicide evaluations for control of frogeye leaf spot, white mold, and purple seed stain. Evaluations of seed treatments for control of Rhizoctonia root rot and soybean cyst [...]

By |February 9, 2021|

Be Prepared if Fusarium Head Blight Rears, You Know, its Ugly Head

While the good news for Illinois wheat growers is that fusarium head blight (FHB) has not been a significant issue the last three years, challenges remain to its management in the future. Nathan Kleczewski, University of Illinois Extension field crop pathologist, speaking during the first session of the 2021 Double-Crop Farmers Forum sponsored by ISA, the Illinois Wheat Association and others, says no new fungicides are available today, but new moderately resistant varieties are coming. Kleczewski says the fusarium pathogen that causes the fungal disease overwinters in crop residues, primarily corn and wheat residues. Wheat behind corn raises the [...]

By |January 26, 2021|

Is That SDS?

Growers are learning that planting earlier soybeans can bump yields, but the last several years in Illinois have been wet and cold and that comes with a cost: the risk of infection from Sudden death syndrome (SDS) and other early infecting fungal diseases. We see soybeans start to yellow too early and want to automatically assume we have SDS in our fields, but that’s not always the case. There are a few other soybean diseases that look very similar to SDS and we should properly identify what is occurring in our fields. Some diseases that could cause early yellowing: [...]

By |August 31, 2020|
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